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2020-08-23ARM: dts: imx25-pinfunc: Fix GPT function namesUwe Kleine-König1-3/+4
According to the reference manual of the i.MX25 the function name for the GPT capture input is called CAPIN1. So fix the names to follow the same naming scheme as used for the other pads and functions. Also add one missing pad function. There are no mainline users that needs adaption. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-23ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 channel nodeDan Murphy1-4/+10
Add the reg property to each channel node. This update is to accommodate the multicolor framework. In addition to the accommodation this allows the LEDs to be placed on any channel and allow designs to skip channels as opposed to requiring sequential order. Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Dan Murphy <dmurphy@ti.com> CC: Shawn Guo <shawnguo@kernel.org> CC: Sascha Hauer <s.hauer@pengutronix.de> CC: Pengutronix Kernel Team <kernel@pengutronix.de> CC: Fabio Estevam <festevam@gmail.com> CC: NXP Linux Team <linux-imx@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx6q-bx50v3: Add IRQ support for internal switchSebastian Reichel1-1/+16
This adds missing interrupt support for the internal Marvell switch, so that the kernel does not have to keep polling the PHYs on the bit-banged MDIO bus all the time. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx6qdl-sabresd: Support headphone and microphone detectionShengjiu Wang1-1/+5
Add "DMIC" rounting, headphone and microphone detect gpio for sound card, then output sound can switch between headphone and speaker. input sound can switch between DMIC and AMIC. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx25-pinfunc: add missing and fix wrong SPI related defintionsUwe Kleine-König1-3/+18
I used the i.MX25 Reference Manual (Rev 2 01/2011) as source for these additions and fixes. No mainline dts is affected by the fixes (nor obviously by the additions). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx6dl-yapp4: Add support for OLED based on different controllerMichal Vokáč3-3/+24
OLED display consist of an OLED panel and a display controller. The displays that were used on yapp4 platform were based on a SSD1305 controller. These displays are now discontinued and we need to add support for a replacement. The new display is based on SSD1309 controller and requires slightly different configuration (mirror + segment offset). We want to support both display types so it does no matter which one was used on the assembly line. Hence the displays are placed at different I2C addresses. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx6dl-yapp4: Add Y Soft IOTA Orion boardMichal Vokáč2-0/+51
Add devicetree for new variant of the Y Soft IOT appliance. The board is based on Hydra with the following changes: - faster SoC (1GHz), 4GB RAM and 64GB eMMC - removed miniPCIe - removed Audio jack - removed uSD slot - removed RJ10 serial - HDMI replaced by USB host Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx: Change gpmi nand node name to nand-controllerAnson Huang11-11/+11
Change i.MX SoCs nand node name from "gpmi-nand" to "nand-controller" to be compliant with yaml schema, it requires the nodename to be "nand-controller". Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx27: Change nand node name to nand-controllerAnson Huang1-1/+1
Change i.MX27 nand node name from "nand" to "nand-controller" to be compliant with yaml schema, it requires the nodename to be "nand-controller". Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx6dl-yapp4: Add ethernet aliasesMichal Vokáč2-2/+11
Add aliases for ethernet switch ports to allow bootloader to fix MAC addresses to the ones stored in onboard configuration EEPROM. Ursa has only one ethernet port populated (eth2) so alias for the first port has to be removed on this board. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22ARM: dts: imx7: add QSPIMatthias Schiffer1-0/+13
In preparation for an update of the TQ-Systems TQMa7x/MBa7x DTS, add the QSPI controller to imx7s.dtsi. Based-on-patch-by: Han Xu <han.xu@nxp.com> Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: imx7d-sdb: Add nodes for audio sound cardShengjiu Wang1-0/+81
Configure the SAI device node, configure audio clock and pinctrl. Enable the audio sound card, which use the SAI1 and wm8960, and enable headphone detection. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: imx6qdl: add TQMa6{S,Q,QP} SoMMarkus Niebel8-0/+337
Add device trees for TQMa6S, TQMa6Q, and TQMa6QP embedded modules. The A and B SoM variants are for hardware revisions that differ in how the I2C devices are connected. For details, see [1]. This is a combination of the patches "arm: dt: imx6qdl: add tqma6[qdl] som on mba6 mainboard", "arm: dt: tqma6: add spi with spi nor flash on SOM", "arm: dt: add basic support for tqma6qp on mba6", and "arm: dt: imx6qdl-tqma6: use generic jedec,spi-nor" from the TQMa6x BSP, with the MBa6 specific parts removed. [1] https://support.tq-group.com/en/arm/tqma6x/linux/ptxdist/overview Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com> [bst@pengutronix.de: remove unnecessary container node in the iomuxc node] Signed-off-by: Bastian Krause <bst@pengutronix.de> [p.zabel@pengutronix.de: merged patches from TQMa6x BSP REV.0114, separated MBa6 DTs, fixed checkpatch and dtbs_check warnings, added no-sd(io) properties to eMMC, added SPDX license identifiers and commit message] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: ZII: Disable HW Ethernet switch reset GPIOsChris Healy4-8/+0
Disable Ethernet switch reset GPIO with ZII platforms that have it enabled. HW switch reset results in a reset of the copper PHYs inside of the switch. We want to avoid this reset of the copper PHYs in the switch as this results in unnecessary broader network disruption on a soft reboot of the application processor. With the HW GPIO removed, the switch driver still performs a soft reset of the switch core which has been shown to sufficiently meet our needs with other ZII platforms that do not have the HW switch reset GPIO defined. Signed-off-by: Chris Healy <cphealy@gmail.com> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: imx6qp-sabreauto: enable pcieRichard Zhu1-1/+2
Add the reset-gpio property, and enable PCIe on iMX6QP SABREAUTO board. Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: imx6ull: add rngHoria Geantă1-0/+7
Add node for the RNGB block. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Reviewed-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: imx6sll: add rngHoria Geantă1-0/+7
Add node for the RNGB block. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-17ARM: dts: imx6sl: fix rng nodeHoria Geantă1-0/+2
rng DT node was added without a compatible string. i.MX driver for RNGC (drivers/char/hw_random/imx-rngc.c) also claims support for RNGB, and is currently used for i.MX25. Let's use this driver also for RNGB block in i.MX6SL. Fixes: e29fe21cff96 ("ARM: dts: add device tree source for imx6sl SoC") Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-14all arch: remove system call sys_sysctlXiaoming Ni2-2/+1
Since commit 61a47c1ad3a4dc ("sysctl: Remove the sysctl system call"), sys_sysctl is actually unavailable: any input can only return an error. We have been warning about people using the sysctl system call for years and believe there are no more users. Even if there are users of this interface if they have not complained or fixed their code by now they probably are not going to, so there is no point in warning them any longer. So completely remove sys_sysctl on all architectures. [nixiaoming@huawei.com: s390: fix build error for sys_call_table_emu] Link: http://lkml.kernel.org/r/20200618141426.16884-1-nixiaoming@huawei.com Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Will Deacon <will@kernel.org> [arm/arm64] Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bin Meng <bin.meng@windriver.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: chenzefeng <chenzefeng2@huawei.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christian Brauner <christian@brauner.io> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Diego Elio Pettenò <flameeyes@flameeyes.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kars de Jong <jongk@linux-m68k.org> Cc: Kees Cook <keescook@chromium.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Nick Piggin <npiggin@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Olof Johansson <olof@lixom.net> Cc: Paul Burton <paulburton@kernel.org> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Sven Schnelle <svens@stackframe.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Zhou Yanjie <zhouyanjie@wanyeetech.com> Link: http://lkml.kernel.org/r/20200616030734.87257-1-nixiaoming@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14Merge tag 'timers-urgent-2020-08-14' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timekeeping updates from Thomas Gleixner: "A set of timekeeping/VDSO updates: - Preparatory work to allow S390 to switch over to the generic VDSO implementation. S390 requires that the VDSO data pointer is handed in to the counter read function when time namespace support is enabled. Adding the pointer is a NOOP for all other architectures because the compiler is supposed to optimize that out when it is unused in the architecture specific inline. The change also solved a similar problem for MIPS which fortunately has time namespaces not yet enabled. S390 needs to update clock related VDSO data independent of the timekeeping updates. This was solved so far with yet another sequence counter in the S390 implementation. A better solution is to utilize the already existing VDSO sequence count for this. The core code now exposes helper functions which allow to serialize against the timekeeper code and against concurrent readers. S390 needs extra data for their clock readout function. The initial common VDSO data structure did not provide a way to add that. It now has an embedded architecture specific struct embedded which defaults to an empty struct. Doing this now avoids tree dependencies and conflicts post rc1 and allows all other architectures which work on generic VDSO support to work from a common upstream base. - A trivial comment fix" * tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Delete repeated words in comments lib/vdso: Allow to add architecture-specific vdso data timekeeping/vsyscall: Provide vdso_update_begin/end() vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
2020-08-12Merge branch 'akpm' (patches from Andrew)Linus Torvalds3-21/+10
Merge more updates from Andrew Morton: - most of the rest of MM (memcg, hugetlb, vmscan, proc, compaction, mempolicy, oom-kill, hugetlbfs, migration, thp, cma, util, memory-hotplug, cleanups, uaccess, migration, gup, pagemap), - various other subsystems (alpha, misc, sparse, bitmap, lib, bitops, checkpatch, autofs, minix, nilfs, ufs, fat, signals, kmod, coredump, exec, kdump, rapidio, panic, kcov, kgdb, ipc). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits) mm/gup: remove task_struct pointer for all gup code mm: clean up the last pieces of page fault accountings mm/xtensa: use general page fault accounting mm/x86: use general page fault accounting mm/sparc64: use general page fault accounting mm/sparc32: use general page fault accounting mm/sh: use general page fault accounting mm/s390: use general page fault accounting mm/riscv: use general page fault accounting mm/powerpc: use general page fault accounting mm/parisc: use general page fault accounting mm/openrisc: use general page fault accounting mm/nios2: use general page fault accounting mm/nds32: use general page fault accounting mm/mips: use general page fault accounting mm/microblaze: use general page fault accounting mm/m68k: use general page fault accounting mm/ia64: use general page fault accounting mm/hexagon: use general page fault accounting mm/csky: use general page fault accounting ...
2020-08-12mm/arm: use general page fault accountingPeter Xu1-19/+6
Use the general page fault accounting by passing regs into handle_mm_fault(). It naturally solve the issue of multiple page fault accounting when page fault retry happened. To do this, we need to pass the pt_regs pointer into __do_page_fault(). Fix PERF_COUNT_SW_PAGE_FAULTS perf event manually for page fault retries, by moving it before taking mmap_sem. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/20200707225021.200906-5-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12mm: do page fault accounting in handle_mm_faultPeter Xu1-1/+1
Patch series "mm: Page fault accounting cleanups", v5. This is v5 of the pf accounting cleanup series. It originates from Gerald Schaefer's report on an issue a week ago regarding to incorrect page fault accountings for retried page fault after commit 4064b9827063 ("mm: allow VM_FAULT_RETRY for multiple times"): https://lore.kernel.org/lkml/20200610174811.44b94525@thinkpad/ What this series did: - Correct page fault accounting: we do accounting for a page fault (no matter whether it's from #PF handling, or gup, or anything else) only with the one that completed the fault. For example, page fault retries should not be counted in page fault counters. Same to the perf events. - Unify definition of PERF_COUNT_SW_PAGE_FAULTS: currently this perf event is used in an adhoc way across different archs. Case (1): for many archs it's done at the entry of a page fault handler, so that it will also cover e.g. errornous faults. Case (2): for some other archs, it is only accounted when the page fault is resolved successfully. Case (3): there're still quite some archs that have not enabled this perf event. Since this series will touch merely all the archs, we unify this perf event to always follow case (1), which is the one that makes most sense. And since we moved the accounting into handle_mm_fault, the other two MAJ/MIN perf events are well taken care of naturally. - Unify definition of "major faults": the definition of "major fault" is slightly changed when used in accounting (not VM_FAULT_MAJOR). More information in patch 1. - Always account the page fault onto the one that triggered the page fault. This does not matter much for #PF handlings, but mostly for gup. More information on this in patch 25. Patchset layout: Patch 1: Introduced the accounting in handle_mm_fault(), not enabled. Patch 2-23: Enable the new accounting for arch #PF handlers one by one. Patch 24: Enable the new accounting for the rest outliers (gup, iommu, etc.) Patch 25: Cleanup GUP task_struct pointer since it's not needed any more This patch (of 25): This is a preparation patch to move page fault accountings into the general code in handle_mm_fault(). This includes both the per task flt_maj/flt_min counters, and the major/minor page fault perf events. To do this, the pt_regs pointer is passed into handle_mm_fault(). PERF_COUNT_SW_PAGE_FAULTS should still be kept in per-arch page fault handlers. So far, all the pt_regs pointer that passed into handle_mm_fault() is NULL, which means this patch should have no intented functional change. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Chris Zankel <chris@zankel.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200707225021.200906-1-peterx@redhat.com Link: http://lkml.kernel.org/r/20200707225021.200906-2-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12uaccess: remove segment_eqChristoph Hellwig1-2/+2
segment_eq is only used to implement uaccess_kernel. Just open code uaccess_kernel in the arch uaccess headers and remove one layer of indirection. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Greentime Hu <green.hu@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Link: http://lkml.kernel.org/r/20200710135706.537715-5-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12syscalls: use uaccess_kernel in addr_limit_user_checkChristoph Hellwig1-0/+2
Patch series "clean up address limit helpers", v2. In preparation for eventually phasing out direct use of set_fs(), this series removes the segment_eq() arch helper that is only used to implement or duplicate the uaccess_kernel() API, and then adds descriptive helpers to force the kernel address limit. This patch (of 6): Use the uaccess_kernel helper instead of duplicating it. [hch@lst.de: arm: don't call addr_limit_user_check for nommu] Link: http://lkml.kernel.org/r/20200721045834.GA9613@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/20200714105505.935079-1-hch@lst.de Link: http://lkml.kernel.org/r/20200710135706.537715-1-hch@lst.de Link: http://lkml.kernel.org/r/20200710135706.537715-2-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-11Merge tag 'iommu-updates-v5.9' of ↵Linus Torvalds1-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - Remove of the dev->archdata.iommu (or similar) pointers from most architectures. Only Sparc is left, but this is private to Sparc as their drivers don't use the IOMMU-API. - ARM-SMMU updates from Will Deacon: - Support for SMMU-500 implementation in Marvell Armada-AP806 SoC - Support for SMMU-500 implementation in NVIDIA Tegra194 SoC - DT compatible string updates - Remove unused IOMMU_SYS_CACHE_ONLY flag - Move ARM-SMMU drivers into their own subdirectory - Intel VT-d updates from Lu Baolu: - Misc tweaks and fixes for vSVA - Report/response page request events - Cleanups - Move the Kconfig and Makefile bits for the AMD and Intel drivers into their respective subdirectory. - MT6779 IOMMU Support - Support for new chipsets in the Renesas IOMMU driver - Other misc cleanups and fixes (e.g. to improve compile test coverage) * tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits) iommu/amd: Move Kconfig and Makefile bits down into amd directory iommu/vt-d: Move Kconfig and Makefile bits down into intel directory iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu iommu: Add gfp parameter to io_pgtable_ops->map() iommu: Mark __iommu_map_sg() as static iommu/vt-d: Rename intel-pasid.h to pasid.h iommu/vt-d: Add page response ops support iommu/vt-d: Report page request faults for guest SVA iommu/vt-d: Add a helper to get svm and sdev for pasid iommu/vt-d: Refactor device_to_iommu() helper iommu/vt-d: Disable multiple GPASID-dev bind iommu/vt-d: Warn on out-of-range invalidation address iommu/vt-d: Fix devTLB flush for vSVA iommu/vt-d: Handle non-page aligned address iommu/vt-d: Fix PASID devTLB invalidation iommu/vt-d: Remove global page support in devTLB flush iommu/vt-d: Enforce PASID devTLB field mask iommu: Make some functions static iommu/amd: Remove double zero check ...
2020-08-09Merge tag 'kbuild-v5.9' of ↵Linus Torvalds1-7/+2
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - run the checker (e.g. sparse) after the compiler - remove unneeded cc-option tests for old compiler flags - fix tar-pkg to install dtbs - introduce ccflags-remove-y and asflags-remove-y syntax - allow to trace functions in sub-directories of lib/ - introduce hostprogs-always-y and userprogs-always-y syntax - various Makefile cleanups * tag 'kbuild-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: stop filtering out $(GCC_PLUGINS_CFLAGS) from cc-option base kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled kbuild: introduce hostprogs-always-y and userprogs-always-y kbuild: sort hostprogs before passing it to ifneq kbuild: move host .so build rules to scripts/gcc-plugins/Makefile kbuild: Replace HTTP links with HTTPS ones kbuild: trace functions in subdirectories of lib/ kbuild: introduce ccflags-remove-y and asflags-remove-y kbuild: do not export LDFLAGS_vmlinux kbuild: always create directories of targets powerpc/boot: add DTB to 'targets' kbuild: buildtar: add dtbs support kbuild: remove cc-option test of -ffreestanding kbuild: remove cc-option test of -fno-stack-protector Revert "kbuild: Create directory for target DTB" kbuild: run the checker after the compiler
2020-08-09Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds1-15/+0
Pull regset conversion fix from Al Viro: "Fix a regression from an unnoticed bisect hazard in the regset series. A bunch of old (aout, originally) primitives used by coredumps became dead code after fdpic conversion to regsets. Removal of that dead code had been the first commit in the followups to regset series; unfortunately, it happened to hide the bisect hazard on sh (extern for fpregs_get() had not been updated in the main series when it should have been; followup simply made fpregs_get() static). And without that followup commit this bisect hazard became breakage in the mainline" Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: kill unused dump_fpu() instances
2020-08-09Merge tag 'pinctrl-v5.9-1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "This is the bulk of the pin control changes for the v5.9 kernel series: Core changes: - The GPIO patch "gpiolib: Introduce for_each_requested_gpio_in_range() macro" was put in an immutable branch and merged into the pinctrl tree as well. We see these changes also here. - Improved debug output for pins used as GPIO. New drivers: - Ocelot Sparx5 SoC driver. - Intel Emmitsburg SoC subdriver. - Intel Tiger Lake-H SoC subdriver. - Qualcomm PM660 SoC subdriver. - Renesas SH-PFC R8A774E1 subdriver. Driver improvements: - Linear improvement and cleanups of the Intel drivers for Cherryview, Lynxpoint, Baytrail etc. Improved locking among other things. - Renesas SH-PFC has added support for RPC pins, groups, and functions to r8a77970 and r8a77980. - The newere Freescale (now NXP) i.MX8 pin controllers have been modularized. This is driven by the Google Android GKI initiative I think. - Open drain support for pins on the Qualcomm IPQ4019. - The Ingenic driver can handle both edges IRQ detection. - A big slew of documentation fixes all over the place. - A few irqchip template conversions by yours truly. * tag 'pinctrl-v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (107 commits) dt-bindings: pinctrl: add bindings for MediaTek MT6779 SoC pinctrl: stmfx: Use irqchip template pinctrl: amd: Use irqchip template pinctrl: mediatek: fix build for tristate changes pinctrl: samsung: Use bank name as irqchip name pinctrl: core: print gpio in pins debugfs file pinctrl: mediatek: add mt6779 eint support pinctrl: mediatek: add pinctrl support for MT6779 SoC pinctrl: mediatek: avoid virtual gpio trying to set reg pinctrl: mediatek: update pinmux definitions for mt6779 pinctrl: stm32: use the hwspin_lock_timeout_in_atomic() API pinctrl: mcp23s08: Use irqchip template pinctrl: sx150x: Use irqchip template dt-bindings: ingenic,pinctrl: Support pinmux/pinconf nodes pinctrl: intel: Add Intel Emmitsburg pin controller support pinctl: ti: iodelay: Replace HTTP links with HTTPS ones Revert "gpio: omap: handle pin config bias flags" pinctrl: single: Use fallthrough pseudo-keyword pinctrl: qcom: spmi-gpio: Use fallthrough pseudo-keyword pinctrl: baytrail: Use fallthrough pseudo-keyword ...
2020-08-10kbuild: introduce ccflags-remove-y and asflags-remove-yMasahiro Yamada1-5/+1
CFLAGS_REMOVE_<file>.o filters out flags when compiling a particular object, but there is no convenient way to do that for every object in a directory. Add ccflags-remove-y and asflags-remove-y to make it easily. Use ccflags-remove-y to clean up some Makefiles. The add/remove order works as follows: [1] KBUILD_CFLAGS specifies compiler flags used globally [2] ccflags-y adds compiler flags for all objects in the current Makefile [3] ccflags-remove-y removes compiler flags for all objects in the current Makefile (New feature) [4] CFLAGS_<file> adds compiler flags per file. [5] CFLAGS_REMOVE_<file> removes compiler flags per file. Having [3] before [4] allows us to remove flags from most (but not all) objects in the current Makefile. For example, kernel/trace/Makefile removes $(CC_FLAGS_FTRACE) from all objects in the directory, then adds it back to trace_selftest_dynamic.o and CFLAGS_trace_kprobe_selftest.o The same applies to lib/livepatch/Makefile. Please note ccflags-remove-y has no effect to the sub-directories. In contrast, the previous notation got rid of compiler flags also from all the sub-directories. The following are not affected because they have no sub-directories: arch/arm/boot/compressed/ arch/powerpc/xmon/ arch/sh/ kernel/trace/ However, lib/ has several sub-directories. To keep the behavior, I added ccflags-remove-y to all Makefiles in subdirectories of lib/, except the following: lib/vdso/Makefile - Kbuild does not descend into this Makefile lib/raid/test/Makefile - This is not used for the kernel build I think commit 2464a609ded0 ("ftrace: do not trace library functions") excluded too much. In the next commit, I will remove ccflags-remove-y from the sub-directories of lib/. Suggested-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Brendan Higgins <brendanhiggins@google.com> (KUnit) Tested-by: Anders Roxell <anders.roxell@linaro.org>
2020-08-07Merge tag 'media/v5.9-1' of ↵Linus Torvalds12-400/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - Legacy soc_camera driver was removed from staging - New I2C sensor related drivers: dw9768, ch7322, max9271, rdacm20 - TI vpe driver code was re-organized and had new features added - Added Xilinx MIPI CSI-2 Rx Subsystem driver - Added support for Infrared Toy and IR Droid devices - Lots of random driver fixes, new features and cleanups * tag 'media/v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (318 commits) media: camss: fix memory leaks on error handling paths in probe media: davinci: vpif_capture: fix potential double free media: radio: remove redundant assignment to variable retval media: allegro: fix potential null dereference on header media: mtk-mdp: Fix a refcounting bug on error in init media: allegro: fix an error pointer vs NULL check media: meye: fix missing pm_mchip_mode field media: cafe-driver: use generic power management media: saa7164: use generic power management media: v4l2-dev/ioctl: Fix document for VIDIOC_QUERYCAP media: v4l2: Correct kernel-doc inconsistency media: v4l2: Correct kernel-doc inconsistency media: dvbdev.h: keep * together with the type media: v4l2-subdev.h: keep * together with the type media: videobuf2: Print videobuf2 buffer state by name media: colorspaces-details.rst: fix V4L2_COLORSPACE_JPEG description media: tw68: use generic power management media: meye: use generic power management media: cx88: use generic power management media: cx25821: use generic power management ...
2020-08-07Merge branch 'akpm' (patches from Andrew)Linus Torvalds9-24/+4
Merge misc updates from Andrew Morton: - a few MM hotfixes - kthread, tools, scripts, ntfs and ocfs2 - some of MM Subsystems affected by this patch series: kthread, tools, scripts, ntfs, ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan, debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore, sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits) mm: vmscan: consistent update to pgrefill mm/vmscan.c: fix typo khugepaged: khugepaged_test_exit() check mmget_still_valid() khugepaged: retract_page_tables() remember to test exit khugepaged: collapse_pte_mapped_thp() protect the pmd lock khugepaged: collapse_pte_mapped_thp() flush the right range mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible mm: thp: replace HTTP links with HTTPS ones mm/page_alloc: fix memalloc_nocma_{save/restore} APIs mm/page_alloc.c: skip setting nodemask when we are in interrupt mm/page_alloc: fallbacks at most has 3 elements mm/page_alloc: silence a KASAN false positive mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask() mm/page_alloc.c: simplify pageblock bitmap access mm/page_alloc.c: extract the common part in pfn_to_bitidx() mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits mm/shuffle: remove dynamic reconfiguration mm/memory_hotplug: document why shuffle_zone() is relevant mm/page_alloc: remove nr_free_pagecache_pages() mm: remove vm_total_pages ...
2020-08-07mm/sparse: cleanup the code surrounding memory_present()Mike Rapoport1-7/+2
After removal of CONFIG_HAVE_MEMBLOCK_NODE_MAP we have two equivalent functions that call memory_present() for each region in memblock.memory: sparse_memory_present_with_active_regions() and membocks_present(). Moreover, all architectures have a call to either of these functions preceding the call to sparse_init() and in the most cases they are called one after the other. Mark the regions from memblock.memory as present during sparce_init() by making sparse_init() call memblocks_present(), make memblocks_present() and memory_present() functions static and remove redundant sparse_memory_present_with_active_regions() function. Also remove no longer required HAVE_MEMORY_PRESENT configuration option. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200712083130.22919-1-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07asm-generic: pgalloc: provide generic pgd_free()Mike Rapoport1-0/+1
Most architectures define pgd_free() as a wrapper for free_page(). Provide a generic version in asm-generic/pgalloc.h and enable its use for most architectures. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pekka Enberg <penberg@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joerg Roedel <jroedel@suse.de> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Matthew Wilcox <willy@infradead.org> Link: http://lkml.kernel.org/r/20200627143453.31835-7-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()Mike Rapoport1-11/+0
For most architectures that support >2 levels of page tables, pmd_alloc_one() is a wrapper for __get_free_pages(), sometimes with __GFP_ZERO and sometimes followed by memset(0) instead. More elaborate versions on arm64 and x86 account memory for the user page tables and call to pgtable_pmd_page_ctor() as the part of PMD page initialization. Move the arm64 version to include/asm-generic/pgalloc.h and use the generic version on several architectures. The pgtable_pmd_page_ctor() is a NOP when ARCH_ENABLE_SPLIT_PMD_PTLOCK is not enabled, so there is no functional change for most architectures except of the addition of __GFP_ACCOUNT for allocation of user page tables. The pmd_free() is a wrapper for free_page() in all the cases, so no functional change here. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pekka Enberg <penberg@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joerg Roedel <jroedel@suse.de> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/20200627143453.31835-5-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07mm: remove unneeded includes of <asm/pgalloc.h>Mike Rapoport7-6/+1
Patch series "mm: cleanup usage of <asm/pgalloc.h>" Most architectures have very similar versions of pXd_alloc_one() and pXd_free_one() for intermediate levels of page table. These patches add generic versions of these functions in <asm-generic/pgalloc.h> and enable use of the generic functions where appropriate. In addition, functions declared and defined in <asm/pgalloc.h> headers are used mostly by core mm and early mm initialization in arch and there is no actual reason to have the <asm/pgalloc.h> included all over the place. The first patch in this series removes unneeded includes of <asm/pgalloc.h> In the end it didn't work out as neatly as I hoped and moving pXd_alloc_track() definitions to <asm-generic/pgalloc.h> would require unnecessary changes to arches that have custom page table allocations, so I've decided to move lib/ioremap.c to mm/ and make pgalloc-track.h local to mm/. This patch (of 8): In most cases <asm/pgalloc.h> header is required only for allocations of page table memory. Most of the .c files that include that header do not use symbols declared in <asm/pgalloc.h> and do not require that header. As for the other header files that used to include <asm/pgalloc.h>, it is possible to move that include into the .c file that actually uses symbols from <asm/pgalloc.h> and drop the include from the header file. The process was somewhat automated using sed -i -E '/[<"]asm\/pgalloc\.h/d' \ $(grep -L -w -f /tmp/xx \ $(git grep -E -l '[<"]asm/pgalloc\.h')) where /tmp/xx contains all the symbols defined in arch/*/include/asm/pgalloc.h. [rppt@linux.ibm.com: fix powerpc warning] Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pekka Enberg <penberg@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Joerg Roedel <jroedel@suse.de> Cc: Matthew Wilcox <willy@infradead.org> Link: http://lkml.kernel.org/r/20200627143453.31835-1-rppt@kernel.org Link: http://lkml.kernel.org/r/20200627143453.31835-2-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07Merge tag 'for-linus-5.9-rc1-tag' of ↵Linus Torvalds1-17/+17
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: - two trivial comment fixes - a small series for the Xen balloon driver fixing some issues - a series of the Xen privcmd driver targeting elimination of using get_user_pages*() in this driver - a series for the Xen swiotlb driver cleaning it up and adding support for letting the kernel run as dom0 on Rpi4 * tag 'for-linus-5.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/arm: call dma_to_phys on the dma_addr_t parameter of dma_cache_maint xen/arm: introduce phys/dma translations in xen_dma_sync_for_* swiotlb-xen: introduce phys_to_dma/dma_to_phys translations swiotlb-xen: remove XEN_PFN_PHYS swiotlb-xen: add struct device * parameter to is_xen_swiotlb_buffer swiotlb-xen: add struct device * parameter to xen_dma_sync_for_device swiotlb-xen: add struct device * parameter to xen_dma_sync_for_cpu swiotlb-xen: add struct device * parameter to xen_bus_to_phys swiotlb-xen: add struct device * parameter to xen_phys_to_bus swiotlb-xen: remove start_dma_addr swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses Revert "xen/balloon: Fix crash when ballooning on x86 32 bit PAE" xen/balloon: make the balloon wait interruptible xen/balloon: fix accounting in alloc_xenballooned_pages error path xen: hypercall.h: fix duplicated word xen/gntdev: gntdev.h: drop a duplicated word xen/privcmd: Convert get_user_pages*() to pin_user_pages*() xen/privcmd: Mark pages as dirty xen/privcmd: Corrected error handling path
2020-08-07Merge branch 'hch.init_path' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull init and set_fs() cleanups from Al Viro: "Christoph's 'getting rid of ksys_...() uses under KERNEL_DS' series" * 'hch.init_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (50 commits) init: add an init_dup helper init: add an init_utimes helper init: add an init_stat helper init: add an init_mknod helper init: add an init_mkdir helper init: add an init_symlink helper init: add an init_link helper init: add an init_eaccess helper init: add an init_chmod helper init: add an init_chown helper init: add an init_chroot helper init: add an init_chdir helper init: add an init_rmdir helper init: add an init_unlink helper init: add an init_umount helper init: add an init_mount helper init: mark create_dev as __init init: mark console_on_rootfs as __init init: initialize ramdisk_execute_command at compile time devtmpfs: refactor devtmpfsd() ...
2020-08-07Merge branch 'work.regset' of ↵Linus Torvalds1-40/+12
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull ptrace regset updates from Al Viro: "Internal regset API changes: - regularize copy_regset_{to,from}_user() callers - switch to saner calling conventions for ->get() - kill user_regset_copyout() The ->put() side of things will have to wait for the next cycle, unfortunately. The balance is about -1KLoC and replacements for ->get() instances are a lot saner" * 'work.regset' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (41 commits) regset: kill user_regset_copyout{,_zero}() regset(): kill ->get_size() regset: kill ->get() csky: switch to ->regset_get() xtensa: switch to ->regset_get() parisc: switch to ->regset_get() nds32: switch to ->regset_get() nios2: switch to ->regset_get() hexagon: switch to ->regset_get() h8300: switch to ->regset_get() openrisc: switch to ->regset_get() riscv: switch to ->regset_get() c6x: switch to ->regset_get() ia64: switch to ->regset_get() arc: switch to ->regset_get() arm: switch to ->regset_get() sh: convert to ->regset_get() arm64: switch to ->regset_get() mips: switch to ->regset_get() sparc: switch to ->regset_get() ...
2020-08-06Merge tag 'sound-5.9-rc1' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "This became wide and scattered updates all over the sound tree as diffstat shows: lots of (still ongoing) refactoring works in ASoC, fixes and cleanups caught by static analysis, inclusive term conversions as well as lots of new drivers. Below are highlights: ASoC core: - API cleanups and conversions to the unified mute_stream() call - Simplify I/O helper functions - Use helper macros to retrieve RTD from substreams ASoC drivers: - Lots of fixes and cleanups in Intel ASoC drivers - Lots of new stuff: Freescale MQS and i.MX6sx, Intel KeemBay I2S, Maxim MAX98360A and MAX98373 SoundWire, various Mediatek boards, nVidia Tegra 186 and 210, RealTek RL6231, Samsung Midas and Aries boards, TI J721e EVM ALSA core: - Minor code refacotring for SG-buffer handling HD-audio: - Generalization of mute-LED handling with LED classdev - Intel silent stream support for HDMI - Device-specific fixes: CA0132, Loongson-3 Others: - Usual USB- and HD-audio quirks for various devices - Fixes for echoaudio DMA position handling - Various documents and trivial fixes for sparse warnings - Conversion to adopt inclusive terms" * tag 'sound-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (479 commits) ALSA: pci: delete repeated words in comments ALSA: isa: delete repeated words in comments ALSA: hda/tegra: Add 100us dma stop delay ALSA: hda: Add dma stop delay variable ASoC: hda/tegra: Set buffer alignment to 128 bytes ALSA: seq: oss: Serialize ioctls ALSA: hda/hdmi: Add quirk to force connectivity ALSA: usb-audio: add startech usb audio dock name ALSA: usb-audio: Add support for Lenovo ThinkStation P620 Revert "ALSA: hda: call runtime_allow() for all hda controllers" ALSA: hda/ca0132 - Fix AE-5 microphone selection commands. ALSA: hda/ca0132 - Add new quirk ID for Recon3D. ALSA: hda/ca0132 - Fix ZxR Headphone gain control get value. ALSA: hda/realtek: Add alc269/alc662 pin-tables for Loongson-3 laptops ALSA: docs: fix typo ALSA: doc: use correct config variable name ASoC: core: Two step component registration ASoC: core: Simplify snd_soc_component_initialize declaration ASoC: core: Relocate and expose snd_soc_component_initialize ASoC: sh: Replace 'select' DMADEVICES 'with depends on' ...
2020-08-06Merge tag 'sched-fifo-2020-08-04' of ↵Linus Torvalds1-2/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull sched/fifo updates from Ingo Molnar: "This adds the sched_set_fifo*() encapsulation APIs to remove static priority level knowledge from non-scheduler code. The three APIs for non-scheduler code to set SCHED_FIFO are: - sched_set_fifo() - sched_set_fifo_low() - sched_set_normal() These are two FIFO priority levels: default (high), and a 'low' priority level, plus sched_set_normal() to set the policy back to non-SCHED_FIFO. Since the changes affect a lot of non-scheduler code, we kept this in a separate tree" * tag 'sched-fifo-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) sched,tracing: Convert to sched_set_fifo() sched: Remove sched_set_*() return value sched: Remove sched_setscheduler*() EXPORTs sched,psi: Convert to sched_set_fifo_low() sched,rcutorture: Convert to sched_set_fifo_low() sched,rcuperf: Convert to sched_set_fifo_low() sched,locktorture: Convert to sched_set_fifo() sched,irq: Convert to sched_set_fifo() sched,watchdog: Convert to sched_set_fifo() sched,serial: Convert to sched_set_fifo() sched,powerclamp: Convert to sched_set_fifo() sched,ion: Convert to sched_set_normal() sched,powercap: Convert to sched_set_fifo*() sched,spi: Convert to sched_set_fifo*() sched,mmc: Convert to sched_set_fifo*() sched,ivtv: Convert to sched_set_fifo*() sched,drm/scheduler: Convert to sched_set_fifo*() sched,msm: Convert to sched_set_fifo*() sched,psci: Convert to sched_set_fifo*() sched,drbd: Convert to sched_set_fifo*() ...
2020-08-06Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds17-572/+114
Pull ARM updates from Russell King: - add arch/arm/Kbuild from Masahiro Yamada. - simplify act_mm macro, since it contains an open-coded get_thread_info. - VFP updates for Clang from Stefan Agner. - Fix unwinder for Clang from Nathan Huckleberry. - Remove unused it8152 PCI host controller, used by the removed cm-x2xx platforms from Mike Rapoport. - Further explanation of __range_ok(). - Remove kimage_voffset that isn't used anymore from Marc Zyngier. - Drop ancient Thumb-2 workaround for old binutils from Ard Biesheuvel. - Documentation cleanup for mach-* from Pete Zaitcev. * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8996/1: Documentation/Clean up the description of mach-<class> ARM: 8995/1: drop Thumb-2 workaround for ancient binutils ARM: 8994/1: mm: drop kimage_voffset which was only used by KVM ARM: uaccess: add further explanation of __range_ok() ARM: 8993/1: remove it8152 PCI controller driver ARM: 8992/1: Fix unwind_frame for clang-built kernels ARM: 8991/1: use VFP assembler mnemonics if available ARM: 8990/1: use VFP assembler mnemonics in register load/store macros ARM: 8989/1: use .fpu assembler directives instead of assembler arguments ARM: 8982/1: mm: Simplify act_mm macro ARM: 8981/1: add arch/arm/Kbuild
2020-08-06vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()Thomas Gleixner1-1/+2
MIPS already uses and S390 will need the vdso data pointer in __arch_get_hw_counter(). This works nicely as long as the architecture does not support time namespaces in the VDSO. With time namespaces enabled the regular accessor to the vdso data pointer __arch_get_vdso_data() will return the namespace specific VDSO data page for tasks which are part of a non-root time namespace. This would cause the architectures which need the vdso data pointer in __arch_get_hw_counter() to access the wrong vdso data page. Add a vdso_data pointer argument to __arch_get_hw_counter() and hand it in from the call sites in the core code. For architectures which do not need the data pointer in their counter accessor function the compiler will just optimize it out. Fix up all existing architecture implementations and make MIPS utilize the pointer instead of invoking the accessor function. No functional change and no change in the resulting object code (except MIPS). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/draft-87wo2ekuzn.fsf@nanos.tec.linutronix.de
2020-08-05Merge tag 'mmc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds1-4/+0
Pull MMC updates from Ulf Hansson: "MMC core: - Add a new host cap bit and a corresponding DT property, to support power cycling of the card by FW at system suspend/resume. - Fix clock rate setting for SDIO in SDR12/SDR25 speed-mode - Fix switch to 1/4-bit mode at system suspend/resume for SD-combo cards - Convert the mmc-pwrseq DT bindings to the json-schema - Always allow the card detect uevent to be consumed by userspace MMC host controllers: - Convert a few DT bindings to the json-schema - mtk-sd: - Add support for command queue through cqhci - Add support for the MT6779 variant - renesas_sdhi_internal_dmac: - Fix dma unmapping in the error path - sdhci_am654: - Add support for the AM65x PG2.0 variant - Extend support for phys/clocks - sdhci-cadence: - Drop incorrect HW tuning for SD mode - sdhci-msm: - Add support for interconnect bandwidth scaling - Enable internal voltage control - Enable low power state for pinctrls - sdhci-of-at91: - Ludovic Desroches handovers maintenance to Eugen Hristev - sdhci-pci-gli: - Improve clock handling for GL975x - sdhci-pci-o2micro: - Add HW tuning for SDR104 mode - Fix support for O2 host controller Seabird1" * tag 'mmc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (66 commits) mmc: mediatek: make function msdc_cqe_disable() static MAINTAINERS: mmc: sdhci-of-at91: handover maintenance to Eugen Hristev dt-bindings: mmc: mediatek: Add document for mt6779 mmc: mediatek: command queue support mmc: mediatek: refine msdc timeout api mmc: mediatek: add MT6779 MMC driver support mmc: sdhci-pci-o2micro: Add HW tuning for SDR104 mode mmc: sdhci-pci-o2micro: Bug fix for O2 host controller Seabird1 mmc: via-sdmmc: use generic power management memstick: jmb38x_ms: use generic power management mmc: sdhci-cadence: do not use hardware tuning for SD mode mmc: sdhci-pci-gli: Set SDR104's clock to 205MHz and enable SSC for GL975x mmc: cqhci: Fix a print format for the task descriptor mmc: sdhci-of-arasan: fix timings allocation code mmc: sdhci: Fix a potential uninitialized variable dt-bindings: mmc: renesas,sdhi: convert to YAML dt-bindings: mmc: convert arasan sdhci bindings to yaml mmc: sdhci: Fix potential null pointer access while accessing vqmmc mmc: core: Add MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND dt-bindings: mmc: Add full-pwr-cycle-in-suspend property ...
2020-08-05Merge tag 'usb-5.9-rc1' of ↵Linus Torvalds1-0/+17
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/Thunderbolt updates from Greg KH: "Here is the large set of USB and Thunderbolt patches for 5.9-rc1. Nothing really magic/major in here, just lots of little changes and updates: - clean up language usages in USB core and some drivers - Thunderbolt driver updates and additions - USB Gadget driver updates - dwc3 driver updates (like always...) - build with "W=1" warning fixups - mtu3 driver updates - usb-serial driver updates and device ids - typec additions and updates for new hardware - xhci debug code updates for future platforms - cdns3 driver updates - lots of other minor driver updates and fixes and cleanups All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (330 commits) usb: common: usb-conn-gpio: Register charger usb: mtu3: simplify mtu3_req_complete() usb: mtu3: clear dual mode of u3port when disable device usb: mtu3: use MTU3_EP_WEDGE flag usb: mtu3: remove useless member @busy in mtu3_ep struct usb: mtu3: remove repeated error log usb: mtu3: add ->udc_set_speed() usb: mtu3: introduce a funtion to check maximum speed usb: mtu3: clear interrupts status when disable interrupts usb: mtu3: reinitialize CSR registers usb: mtu3: fix macro for maximum number of packets usb: mtu3: remove unnecessary pointer checks usb: xhci: Fix ASMedia ASM1142 DMA addressing usb: xhci: define IDs for various ASMedia host controllers usb: musb: convert to devm_platform_ioremap_resource_byname usb: gadget: tegra-xudc: convert to devm_platform_ioremap_resource_byname usb: gadget: r8a66597: convert to devm_platform_ioremap_resource_byname usb: dwc3: convert to devm_platform_ioremap_resource_byname usb: cdns3: convert to devm_platform_ioremap_resource_byname usb: phy: am335x: convert to devm_platform_ioremap_resource_byname ...
2020-08-04Merge tag 'timers-core-2020-08-04' of ↵Linus Torvalds1-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "Time, timers and related driver updates: - Prevent unnecessary timer softirq invocations by extending the tracking of the next expiring timer in the timer wheel beyond the existing NOHZ functionality. The tracking overhead at enqueue time is within the noise, but on sensitive workloads the avoidance of the soft interrupt invocation is a measurable improvement. - The obligatory new clocksource driver for Ingenic X100 OST - The usual fixes, improvements, cleanups and extensions for newer chip variants all over the driver space" * tag 'timers-core-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits) timers: Recalculate next timer interrupt only when necessary clocksource/drivers/ingenic: Add support for the Ingenic X1000 OST. dt-bindings: timer: Add Ingenic X1000 OST bindings. clocksource/drivers: Replace HTTP links with HTTPS ones clocksource/drivers/nomadik-mtu: Handle 32kHz clock clocksource/drivers/sh_cmt: Use "kHz" for kilohertz clocksource/drivers/imx: Add support for i.MX TPM driver with ARM64 clocksource/drivers/ingenic: Add high resolution timer support for SMP/SMT. timers: Lower base clock forwarding threshold timers: Remove must_forward_clk timers: Spare timer softirq until next expiry timers: Expand clk forward logic beyond nohz timers: Reuse next expiry cache after nohz exit timers: Always keep track of next expiry timers: Optimize _next_timer_interrupt() level iteration timers: Add comments about calc_index() ceiling work timers: Move trigger_dyntick_cpu() to enqueue_timer() timers: Use only bucket expiry for base->next_expiry value timers: Preserve higher bits of expiration on index calculation clocksource/drivers/timer-atmel-tcb: Add sama5d2 support ...
2020-08-04Merge tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mappingLinus Torvalds1-0/+1
Pull dma-mapping updates from Christoph Hellwig: - make support for dma_ops optional - move more code out of line - add generic support for a dma_ops bypass mode - misc cleanups * tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mapping: dma-contiguous: cleanup dma_alloc_contiguous dma-debug: use named initializers for dir2name powerpc: use the generic dma_ops_bypass mode dma-mapping: add a dma_ops_bypass flag to struct device dma-mapping: make support for dma ops optional dma-mapping: inline the fast path dma-direct calls dma-mapping: move the remaining DMA API calls out of line
2020-08-04Merge tag 'close-range-v5.9' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull close_range() implementation from Christian Brauner: "This adds the close_range() syscall. It allows to efficiently close a range of file descriptors up to all file descriptors of a calling task. This is coordinated with the FreeBSD folks which have copied our version of this syscall and in the meantime have already merged it in April 2019: https://reviews.freebsd.org/D21627 https://svnweb.freebsd.org/base?view=revision&revision=359836 The syscall originally came up in a discussion around the new mount API and making new file descriptor types cloexec by default. During this discussion, Al suggested the close_range() syscall. First, it helps to close all file descriptors of an exec()ing task. This can be done safely via (quoting Al's example from [1] verbatim): /* that exec is sensitive */ unshare(CLONE_FILES); /* we don't want anything past stderr here */ close_range(3, ~0U); execve(....); The code snippet above is one way of working around the problem that file descriptors are not cloexec by default. This is aggravated by the fact that we can't just switch them over without massively regressing userspace. For a whole class of programs having an in-kernel method of closing all file descriptors is very helpful (e.g. demons, service managers, programming language standard libraries, container managers etc.). Second, it allows userspace to avoid implementing closing all file descriptors by parsing through /proc/<pid>/fd/* and calling close() on each file descriptor and other hacks. From looking at various large(ish) userspace code bases this or similar patterns are very common in service managers, container runtimes, and programming language runtimes/standard libraries such as Python or Rust. In addition, the syscall will also work for tasks that do not have procfs mounted and on kernels that do not have procfs support compiled in. In such situations the only way to make sure that all file descriptors are closed is to call close() on each file descriptor up to UINT_MAX or RLIMIT_NOFILE, OPEN_MAX trickery. Based on Linus' suggestion close_range() also comes with a new flag CLOSE_RANGE_UNSHARE to more elegantly handle file descriptor dropping right before exec. This would usually be expressed in the sequence: unshare(CLONE_FILES); close_range(3, ~0U); as pointed out by Linus it might be desirable to have this be a part of close_range() itself under a new flag CLOSE_RANGE_UNSHARE which gets especially handy when we're closing all file descriptors above a certain threshold. Test-suite as always included" * tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: tests: add CLOSE_RANGE_UNSHARE tests close_range: add CLOSE_RANGE_UNSHARE tests: add close_range() tests arch: wire-up close_range() open: add close_range()
2020-08-04Merge tag 'fork-v5.9' of ↵Linus Torvalds2-4/+2
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull fork cleanups from Christian Brauner: "This is cleanup series from when we reworked a chunk of the process creation paths in the kernel and switched to struct {kernel_}clone_args. High-level this does two main things: - Remove the double export of both do_fork() and _do_fork() where do_fork() used the incosistent legacy clone calling convention. Now we only export _do_fork() which is based on struct kernel_clone_args. - Remove the copy_thread_tls()/copy_thread() split making the architecture specific HAVE_COYP_THREAD_TLS config option obsolete. This switches all remaining architectures to select HAVE_COPY_THREAD_TLS and thus to the copy_thread_tls() calling convention. The current split makes the process creation codepaths more convoluted than they need to be. Each architecture has their own copy_thread() function unless it selects HAVE_COPY_THREAD_TLS then it has a copy_thread_tls() function. The split is not needed anymore nowadays, all architectures support CLONE_SETTLS but quite a few of them never bothered to select HAVE_COPY_THREAD_TLS and instead simply continued to use copy_thread() and use the old calling convention. Removing this split cleans up the process creation codepaths and paves the way for implementing clone3() on such architectures since it requires the copy_thread_tls() calling convention. After having made each architectures support copy_thread_tls() this series simply renames that function back to copy_thread(). It also switches all architectures that call do_fork() directly over to _do_fork() and the struct kernel_clone_args calling convention. This is a corollary of switching the architectures that did not yet support it over to copy_thread_tls() since do_fork() is conditional on not supporting copy_thread_tls() (Mostly because it lacks a separate argument for tls which is trivial to fix but there's no need for this function to exist.). The do_fork() removal is in itself already useful as it allows to to remove the export of both do_fork() and _do_fork() we currently have in favor of only _do_fork(). This has already been discussed back when we added clone3(). The legacy clone() calling convention is - as is probably well-known - somewhat odd: # # ABI hall of shame # config CLONE_BACKWARDS config CLONE_BACKWARDS2 config CLONE_BACKWARDS3 that is aggravated by the fact that some architectures such as sparc follow the CLONE_BACKWARDSx calling convention but don't really select the corresponding config option since they call do_fork() directly. So do_fork() enforces a somewhat arbitrary calling convention in the first place that doesn't really help the individual architectures that deviate from it. They can thus simply be switched to _do_fork() enforcing a single calling convention. (I really hope that any new architectures will __not__ try to implement their own calling conventions...) Most architectures already have made a similar switch (m68k comes to mind). Overall this removes more code than it adds even with a good portion of added comments. It simplifies a chunk of arch specific assembly either by moving the code into C or by simply rewriting the assembly. Architectures that have been touched in non-trivial ways have all been actually boot and stress tested: sparc and ia64 have been tested with Debian 9 images. They are the two architectures which have been touched the most. All non-trivial changes to architectures have seen acks from the relevant maintainers. nios2 with a custom built buildroot image. h8300 I couldn't get something bootable to test on but the changes have been fairly automatic and I'm sure we'll hear people yell if I broke something there. All other architectures that have been touched in trivial ways have been compile tested for each single patch of the series via git rebase -x "make ..." v5.8-rc2. arm{64} and x86{_64} have been boot tested even though they have just been trivially touched (removal of the HAVE_COPY_THREAD_TLS macro from their Kconfig) because well they are basically "core architectures" and since it is trivial to get your hands on a useable image" * tag 'fork-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: arch: rename copy_thread_tls() back to copy_thread() arch: remove HAVE_COPY_THREAD_TLS unicore: switch to copy_thread_tls() sh: switch to copy_thread_tls() nds32: switch to copy_thread_tls() microblaze: switch to copy_thread_tls() hexagon: switch to copy_thread_tls() c6x: switch to copy_thread_tls() alpha: switch to copy_thread_tls() fork: remove do_fork() h8300: select HAVE_COPY_THREAD_TLS, switch to kernel_clone_args nios2: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone_args ia64: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone_args sparc: unconditionally enable HAVE_COPY_THREAD_TLS sparc: share process creation helpers between sparc and sparc64 sparc64: enable HAVE_COPY_THREAD_TLS fork: fold legacy_clone_args_valid() into _do_fork()
2020-08-04Merge tag 'uninit-macro-v5.9-rc1' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull uninitialized_var() macro removal from Kees Cook: "This is long overdue, and has hidden too many bugs over the years. The series has several "by hand" fixes, and then a trivial treewide replacement. - Clean up non-trivial uses of uninitialized_var() - Update documentation and checkpatch for uninitialized_var() removal - Treewide removal of uninitialized_var()" * tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: compiler: Remove uninitialized_var() macro treewide: Remove uninitialized_var() usage checkpatch: Remove awareness of uninitialized_var() macro mm/debug_vm_pgtable: Remove uninitialized_var() usage f2fs: Eliminate usage of uninitialized_var() macro media: sur40: Remove uninitialized_var() usage KVM: PPC: Book3S PR: Remove uninitialized_var() usage clk: spear: Remove uninitialized_var() usage clk: st: Remove uninitialized_var() usage spi: davinci: Remove uninitialized_var() usage ide: Remove uninitialized_var() usage rtlwifi: rtl8192cu: Remove uninitialized_var() usage b43: Remove uninitialized_var() usage drbd: Remove uninitialized_var() usage x86/mm/numa: Remove uninitialized_var() usage docs: deprecated.rst: Add uninitialized_var()