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2020-09-25Revert "Bluetooth: ath3k: use usb_control_msg_send() and usb_control_msg_recv()"Oliver Neukum1-26/+64
This reverts commit e9b20f0fe17ab06c3b55153046209987749daa48. The API has to be changed Signed-off-by: Oliver Neukum <oneukum@suse.com> Link: https://lore.kernel.org/r/20200923134348.23862-3-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25Revert "USB: core: hub.c: use usb_control_msg_send() in a few places"Oliver Neukum1-40/+59
This reverts commit d6a499249543356002a1efbb26254c7272e62f4c. Control messages are needed in contexts when memory allocations are restricted, such as handling device resets and runtime PM. For this reason the control message API internally uses GFP_NOIO. This is a band aid introduced because when we recognized the issue, the call chains were highly convoluted. Continuing this trend is not a good idea. So I am shooting the whole kennel here. Signed-off-by: Oliver Neukum <oneukum@suse.com> Link: https://lore.kernel.org/r/20200923134348.23862-2-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25iopoll: update kerneldoc of read_poll_timeout_atomic()Chunfeng Yun1-2/+2
Arguments description of read_poll_timeout_atomic() is out of date, update it. Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-11-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: udc: net2280: convert to readl_poll_timeout_atomic()Chunfeng Yun1-11/+10
Use readl_poll_timeout_atomic() to simplify code Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Felipe Balbi <balbi@kernel.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-10-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: phy: phy-mv-usb: convert to readl_poll_timeout_atomic()Chunfeng Yun1-10/+8
Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-9-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: phy-ulpi-viewport: convert to readl_poll_timeout_atomic()Chunfeng Yun1-9/+3
Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-8-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: isp1760-hcd: convert to readl_poll_timeout_atomic()Chunfeng Yun1-11/+9
Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-7-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: fotg210-hcd: convert to readl_poll_timeout_atomic()Chunfeng Yun1-11/+9
Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-6-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic()Chunfeng Yun1-11/+10
Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: xhci-rcar: convert to readl_poll_timeout_atomic()Chunfeng Yun1-31/+12
Use readl_poll_timeout_atomic() to simplify code Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-4-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: pci-quirks: convert to readl_poll_timeout_atomic()Chunfeng Yun1-9/+4
Use readl_poll_timeout_atomic() to simplify code Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-3-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: early: ehci-dbgp: convert to readl_poll_timeout_atomic()Chunfeng Yun1-10/+5
Use readl_poll_timeout_atomic() to simplify code Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Petr Mladek <pmladek@suse.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-2-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-25usb: early: convert to readl_poll_timeout_atomic()Chunfeng Yun1-10/+4
Use readl_poll_timeout_atomic() to simplify code Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Reviewed-by: Jann Horn <jannh@google.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-22dt-bindings: usb: renesas,usbhs: Add r8a774e1 supportLad Prabhakar1-0/+1
Document RZ/G2H (R8A774E1) SoC bindings. Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/1594919915-5225-12-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-22dt-bindings: usb: renesas, usb3-peri: Document r8a774e1 supportLad Prabhakar1-0/+1
Document RZ/G2H (R8A774E1) SoC bindings. Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/1594919915-5225-8-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-22usb: appledisplay: use module_usb_driver to simplify the codeLiu Shixin1-13/+1
module_usb_driver() makes the code simpler by eliminating boilerplate code. Signed-off-by: Liu Shixin <liushixin2@huawei.com> Link: https://lore.kernel.org/r/20200918031012.3980558-1-liushixin2@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-22USB: bcma: use module_bcma_driver to simplify the codeLiu Shixin1-12/+1
module_bcma_driver() makes the code simpler by eliminating boilerplate code. Signed-off-by: Liu Shixin <liushixin2@huawei.com> Link: https://lore.kernel.org/r/20200918030830.3946254-1-liushixin2@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-22Merge tag 'usb-ci-v5.10-rc1' of ↵Greg Kroah-Hartman4-1/+44
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: Two changes for chipidea imx driver: - Add picophy parameter tuning interface - Restore pinctrl for system suspend/resume * tag 'usb-ci-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb: usb: chipidea: ci_hdrc_imx: restore pinctrl usb: chipidea: imx: add two samsung picophy parameters tuning implementation doc: dt-binding: ci-hdrc-usb2: add property for samsung picophy
2020-09-21Merge a31128384dfd ("Merge tag 'libnvdimm-fixes-5.9-rc7' of ↵Greg Kroah-Hartman1-9/+8
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm") into usb-next We need the dax build fix in here as well, so that the build does not break. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-21Merge tag 'libnvdimm-fixes-5.9-rc7' of ↵Linus Torvalds1-9/+8
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fix from Dan Williams: "Fix compilation for the new dax_supported() exported helper" * tag 'libnvdimm-fixes-5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: Fix compilation for CONFIG_DAX && !CONFIG_FS_DAX
2020-09-21dax: Fix compilation for CONFIG_DAX && !CONFIG_FS_DAXJan Kara1-9/+8
dax_supported() is defined whenever CONFIG_DAX is enabled. So dummy implementation should be defined only in !CONFIG_DAX case, not in !CONFIG_FS_DAX case. Fixes: e2ec51282545 ("dm: Call proper helper to determine dax support") Cc: <stable@vger.kernel.org> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2020-09-21Merge 5.0-rc6 into usb-nextGreg Kroah-Hartman197-1344/+1515
We want the USB fixes in here, and this resolves a merge issue in the uas driver. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20Linux 5.9-rc6v5.9-rc6Linus Torvalds1-1/+1
2020-09-20Merge tag 'core_urgent_for_v5.9_rc6' of ↵Linus Torvalds1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull syscall tracing fix from Borislav Petkov: "Fix the seccomp syscall rewriting so that trace and audit see the rewritten syscall number, from Kees Cook" * tag 'core_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: core/entry: Report syscall correctly for trace and audit
2020-09-20Merge tag 'objtool_urgent_for_v5.9_rc6' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fix from Borislav Petkov: "Fix noreturn detection for ignored sibling functions (Josh Poimboeuf)" * tag 'objtool_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix noreturn detection for ignored functions
2020-09-20Merge tag 'locking_urgent_for_v5.9_rc6' of ↵Linus Torvalds4-12/+37
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fixes from Borislav Petkov: "Two fixes from the locking/urgent pile: - Fix lockdep's detection of "USED" <- "IN-NMI" inversions (Peter Zijlstra) - Make percpu-rwsem operations on the semaphore's ->read_count IRQ-safe because it can be used in an IRQ context (Hou Tao)" * tag 'locking_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count locking/lockdep: Fix "USED" <- "IN-NMI" inversions
2020-09-20Merge tag 'efi-urgent-for-v5.9-rc5' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull EFI fix from Borislav Petkov: "Ensure that the EFI bootloader control module only probes successfully on systems that support the EFI SetVariable runtime service" [ Tag and commit from Ard Biesheuvel, forwarded by Borislav ] * tag 'efi-urgent-for-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: efibc: check for efivars write capability
2020-09-20Merge tag 'x86_urgent_for_v5.9_rc6' of ↵Linus Torvalds4-1/+24
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - A defconfig fix (Daniel Díaz) - Disable relocation relaxation for the compressed kernel when not built as -pie as in that case kernels built with clang and linked with LLD fail to boot due to the linker optimizing some instructions in non-PIE form; the gory details in the commit message (Arvind Sankar) - A fix for the "bad bp value" warning issued by the frame-pointer unwinder (Josh Poimboeuf) * tag 'x86_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/unwind/fp: Fix FP unwinding in ret_from_fork x86/boot/compressed: Disable relocation relaxation x86/defconfigs: Explicitly unset CONFIG_64BIT in i386_defconfig
2020-09-20Merge tag 'libnvdimm-fixes-5.9-rc6' of ↵Linus Torvalds4-13/+40
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: "A handful of fixes to address a string of mistakes in the mechanism for device-mapper to determine if its component devices are dax capable. - Fix an original bug in device-mapper table reference counting when interrogating dax capability in the component device. This bug was hidden by the following bug. - Fix device-mapper to use the proper helper (dax_supported() instead of the leaf helper generic_fsdax_supported()) to determine dax operation of a stacked block device configuration. The original implementation is only valid for one level of dax-capable block device stacking. This bug was discovered while fixing the below regression. - Fix an infinite recursion regression introduced by broken attempts to quiet the generic_fsdax_supported() path and make it bail out before logging "dax capability not found" errors" * tag 'libnvdimm-fixes-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: Fix stack overflow when mounting fsdax pmem device dm: Call proper helper to determine dax support dm/dax: Fix table reference counts
2020-09-20Merge tag 'riscv-for-linus-5.9-rc6' of ↵Linus Torvalds8-6/+104
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - A fix for a lockdep issue to avoid an asserting triggering during early boot. There shouldn't be any incorrect behavior as the system isn't concurrent at the time. - The addition of a missing fence when installing early fixmap mappings. - A corretion to the K210 device tree's interrupt map. - A fix for M-mode timer handling on the K210. * tag 'riscv-for-linus-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: RISC-V: Resurrect the MMIO timer implementation for M-mode systems riscv: Fix Kendryte K210 device tree riscv: Add sfence.vma after early page table changes RISC-V: Take text_mutex in ftrace_init_nop()
2020-09-20Merge tag 'usb-5.9-rc6' of ↵Linus Torvalds9-17/+64
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/Thunderbolt fixes from Greg KH: "Here are some small USB and one Thunderbolt driver fixes. Nothing major at all, just some fixes for reported issues, and a quirk addition: - typec fixes - UAS disconnect fix - usblp race fix - ehci-hcd modversions build fix - ignore wakeup quirk table addition - thunderbolt DROM read fix All of these have been in linux-next with no reported issues" * tag 'usb-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usblp: fix race between disconnect() and read() ehci-hcd: Move include to keep CRC stable usb: typec: intel_pmc_mux: Handle SCU IPC error conditions USB: quirks: Add USB_QUIRK_IGNORE_REMOTE_WAKEUP quirk for BYD zhaoxin notebook USB: UAS: fix disconnect by unplugging a hub usb: typec: ucsi: Prevent mode overrun usb: typec: ucsi: acpi: Increase command completion timeout value thunderbolt: Retry DROM read once if parsing fails
2020-09-20Merge tag 'tty-5.9-rc6' of ↵Linus Torvalds4-25/+33
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial/fbcon fixes from Greg KH: "Here are some small tty/serial and one more fbcon fix. They include: - serial core locking regression fixes - new device ids for 8250_pci driver - fbcon fix for syzbot found issue All have been in linux-next with no reported issues" * tag 'tty-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: fbcon: Fix user font detection test at fbcon_resize(). serial: 8250_pci: Add Realtek 816a and 816b serial: core: fix console port-lock regression serial: core: fix port-lock initialisation
2020-09-20Merge tag 'edac_urgent_for_v5.9_rc6' of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras Pull EDAC fixes from Borislav Petkov: "Two fixes for resulting from CONFIG_DEBUG_TEST_DRIVER_REMOVE=y experiments: - complete a previous fix to reset a local structure containing scanned system data properly so that the driver rescans, as it should, on a second load. - address a refcount underflow due to not paying attention to the driver whitelest on unregister" * tag 'edac_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/ghes: Check whether the driver is on the safe list correctly EDAC/ghes: Clear scanned data on unload
2020-09-20Merge branch 'for-linus' of ↵Linus Torvalds3-8/+28
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input fixes from Dmitry Torokhov: "Just a couple of driver quirks" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: trackpoint - add new trackpoint variant IDs Input: i8042 - add Entroware Proteus EL07R4 to nomux and reset lists
2020-09-20mm: fix wake_page_function() comment typosLinus Torvalds1-2/+2
Sedat Dilek pointed out some silly comment typo issues. Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-09-20Merge tag 'kbuild-fixes-v5.9-3' of ↵Linus Torvalds3-35/+39
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: "Fix qconf warnings and revive help message" * tag 'kbuild-fixes-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: qconf: revive help message in the info view kconfig: qconf: fix incomplete type 'struct gstr' warning kconfig: qconf: use delete[] instead of delete to free array (again)
2020-09-20dax: Fix stack overflow when mounting fsdax pmem deviceAdrian Huang1-6/+6
When mounting fsdax pmem device, commit 6180bb446ab6 ("dax: fix detection of dax support for non-persistent memory block devices") introduces the stack overflow [1][2]. Here is the call path for mounting ext4 file system: ext4_fill_super bdev_dax_supported __bdev_dax_supported dax_supported generic_fsdax_supported __generic_fsdax_supported bdev_dax_supported The call path leads to the infinite calling loop, so we cannot call bdev_dax_supported() in __generic_fsdax_supported(). The sanity checking of the variable 'dax_dev' is moved prior to the two bdev_dax_pgoff() checks [3][4]. [1] https://lore.kernel.org/linux-nvdimm/1420999447.1004543.1600055488770.JavaMail.zimbra@redhat.com/ [2] https://lore.kernel.org/linux-nvdimm/alpine.LRH.2.02.2009141131220.30651@file01.intranet.prod.int.rdu2.redhat.com/ [3] https://lore.kernel.org/linux-nvdimm/CA+RJvhxBHriCuJhm-D8NvJRe3h2MLM+ZMFgjeJjrRPerMRLvdg@mail.gmail.com/ [4] https://lore.kernel.org/linux-nvdimm/20200903160608.GU878166@iweiny-DESK2.sc.intel.com/ Fixes: 6180bb446ab6 ("dax: fix detection of dax support for non-persistent memory block devices") Reported-by: Yi Zhang <yi.zhang@redhat.com> Reported-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Adrian Huang <ahuang12@lenovo.com> Reviewed-by: Jan Kara <jack@suse.cz> Tested-by: Ritesh Harjani <riteshh@linux.ibm.com> Cc: Coly Li <colyli@suse.de> Cc: Ira Weiny <ira.weiny@intel.com> Cc: John Pittman <jpittman@redhat.com> Link: https://lore.kernel.org/r/20200917111549.6367-1-adrianhuang0701@gmail.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2020-09-20dm: Call proper helper to determine dax supportJan Kara3-5/+31
DM was calling generic_fsdax_supported() to determine whether a device referenced in the DM table supports DAX. However this is a helper for "leaf" device drivers so that they don't have to duplicate common generic checks. High level code should call dax_supported() helper which that calls into appropriate helper for the particular device. This problem manifested itself as kernel messages: dm-3: error: dax access failed (-95) when lvm2-testsuite run in cases where a DM device was stacked on top of another DM device. Fixes: 7bf7eac8d648 ("dax: Arrange for dax_supported check to span multiple devices") Cc: <stable@vger.kernel.org> Tested-by: Adrian Huang <ahuang12@lenovo.com> Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Mike Snitzer <snitzer@redhat.com> Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/r/160061715195.13131.5503173247632041975.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2020-09-20dm/dax: Fix table reference countsDan Williams1-2/+3
A recent fix to the dm_dax_supported() flow uncovered a latent bug. When dm_get_live_table() fails it is still required to drop the srcu_read_lock(). Without this change the lvm2 test-suite triggers this warning: # lvm2-testsuite --only pvmove-abort-all.sh WARNING: lock held when returning to user space! 5.9.0-rc5+ #251 Tainted: G OE ------------------------------------------------ lvm/1318 is leaving the kernel with locks still held! 1 lock held by lvm/1318: #0: ffff9372abb5a340 (&md->io_barrier){....}-{0:0}, at: dm_get_live_table+0x5/0xb0 [dm_mod] ...and later on this hang signature: INFO: task lvm:1344 blocked for more than 122 seconds. Tainted: G OE 5.9.0-rc5+ #251 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:lvm state:D stack: 0 pid: 1344 ppid: 1 flags:0x00004000 Call Trace: __schedule+0x45f/0xa80 ? finish_task_switch+0x249/0x2c0 ? wait_for_completion+0x86/0x110 schedule+0x5f/0xd0 schedule_timeout+0x212/0x2a0 ? __schedule+0x467/0xa80 ? wait_for_completion+0x86/0x110 wait_for_completion+0xb0/0x110 __synchronize_srcu+0xd1/0x160 ? __bpf_trace_rcu_utilization+0x10/0x10 __dm_suspend+0x6d/0x210 [dm_mod] dm_suspend+0xf6/0x140 [dm_mod] Fixes: 7bf7eac8d648 ("dax: Arrange for dax_supported check to span multiple devices") Cc: <stable@vger.kernel.org> Cc: Jan Kara <jack@suse.cz> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Reported-by: Adrian Huang <ahuang12@lenovo.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Tested-by: Adrian Huang <ahuang12@lenovo.com> Link: https://lore.kernel.org/r/160045867590.25663.7548541079217827340.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2020-09-20usb: xhci: add debugfs support for ep with streamLi Jun3-1/+119
To show the trb ring of streams, use the exsiting ring files of bulk ep to show trb ring of one specific stream ID, which stream ID's trb ring will be shown, is controlled by a new debugfs file stream_id, this is to avoid to create a large number of dir for every allocate stream IDs, another debugfs file stream_context_array is created to show all the allocated stream context array entries. Signed-off-by: Li Jun <jun.li@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-11-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20xhci: don't create endpoint debugfs entry before ring buffer is set.Mathias Nyman1-2/+1
Make sure xHC completes the configure endpoint command and xhci driver sets the ring pointers correctly before we create the user readable debugfs file. In theory there was a small gap where a user could have read the debugfs file and cause a NULL pointer dereference error as ring pointer was not yet set, in practise we want this change to simplify the upcoming streams debugfs support. Fixes: 02b6fdc2a153 ("usb: xhci: Add debugfs interface for xHCI driver") Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-10-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20xhci: Tune interrupt blocking for isochronous transfersMathias Nyman1-4/+19
controllers with XHCI_AVOID_BEI quirk cause too frequent interrupts and affect power management. To avoid interrupting on every isochronous interval the BEI (Block Event Interrupt) flag is set for all except the last Isoch TRB in a URB. This lead to event ring filling up in case several isoc URB were queued and cancelled rapidly, which some controllers didn't handle well, and thus the XHCI_AVOID_BEI quirk was introduced. see commit 227a4fd801c8 ("usb: xhci: apply XHCI_AVOID_BEI quirk to all Intel xHCI controllers") With the XHCI_AVOID_BEI quirk each Isoch TRB will trigger an interrupt. This can cause up to 8000 interrupts per second for isochronous transfers with HD USB3 cameras, affecting power saving. The event ring fits 256 events, instead of interrupting on every isochronous TRB if XHCI_AVOID_BEI is set we make sure at least every 8th Isochronous TRB asserts an interrupt, clearing the event ring. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-9-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: xhci: omit duplicate actions when suspending a runtime suspended host.Peter Chen1-2/+5
If the xhci-plat.c is the platform driver, after the runtime pm is enabled, the xhci_suspend is called if nothing is connected on the port. When the system goes to suspend, it will call xhci_suspend again if USB wakeup is enabled. Since the runtime suspend wakeup setting is not always the same as system suspend wakeup setting, eg, at runtime suspend we always need wakeup if the controller is in low power mode; but at system suspend, we may not need wakeup. So, we move the judgement after changing wakeup setting. [commit message rewording -Mathias] Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-8-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: host: xhci-plat: improve the comments for xhci_plat_suspendPeter Chen1-5/+1
To reflect the current code status. Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-7-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: host: xhci-plat: add wakeup entry at sysfsPeter Chen1-1/+1
With this change, there will be a wakeup entry at /sys/../power/wakeup, and the user could use this entry to choose whether enable xhci wakeup features (wake up system from suspend) or not. Tested-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-6-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: host: xhci-plat: add priv quirk for skip PHY initializationPeter Chen2-2/+7
Some DRD controllers (eg, dwc3 & cdns3) have PHY management at their own driver to cover both device and host mode, so add one priv quirk for such users to skip PHY management from HCD core. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-5-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: host: xhci-plat: delete the unnecessary codePeter Chen1-2/+1
The if {} condition is duplicated with outer if {} condition. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-4-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: host: xhci-plat: add .suspend_quirk for struct xhci_plat_privPeter Chen2-0/+20
Some platforms (eg cdns3) may have special sequences between xhci_bus_suspend and xhci_suspend, add .suspend_quick for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-3-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20usb: host: xhci-plat: add platform data supportPeter Chen1-1/+5
Some xhci hosts (eg dwc3 and cdns3) do not use OF to create platform device, they create xhci-plat platform device runtime. And these platforms may also have quirks, and the quirks could be supplied by their parent device through platform data. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-20kconfig: qconf: revive help message in the info viewMasahiro Yamada1-3/+8
Since commit 68fd110b3e7e ("kconfig: qconf: remove redundant help in the info view"), the help message is no longer displayed. I intended to drop duplicated "Symbol:", "Type:", but precious info about help and reverse dependencies was lost too. Revive it now. "defined at" is contained in menu_get_ext_help(), so I made sure to not display it twice. Fixes: 68fd110b3e7e ("kconfig: qconf: remove redundant help in the info view") Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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