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2013-05-08MIPS: ralink: add uart mask to struct ralink_pinmuxJohn Crispin2-2/+4
Add a field for the uart muxing mask and set it inside the rt305x setup code. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5744/
2013-05-08MIPS: ralink: add pci group to struct ralink_pinmuxGabor Juhos1-0/+3
This will be used for RT3662/RT3883. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5173/
2013-05-08MIPS: ralink: make the RT305x pinmuxing structure staticJohn Crispin1-3/+3
These structures are exported via struct ralink_pinmux rt_gpio_pinmux and can hence be static. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5172/
2013-05-08MIPS: ralink: rename gpio_pinmux to rt_gpio_pinmuxJohn Crispin2-2/+2
Add proper namespacing to the variable. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5171/
2013-05-08MIPS: ralink: make early_printk work on RT2880John Crispin1-0/+4
RT2880 has a different location for the early serial port. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5170/
2013-05-08MIPS: ralink: add RT5350 sdram register definesJohn Crispin1-0/+8
Add a few missing defines that are needed to make memory detection work on the RT5350. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5169/
2013-05-08MIPS: ralink: add missing comment in irq driverJohn Crispin1-0/+1
Trivial patch that adds a comment that makes the code more readable. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5168/
2013-05-08MIPS: ralink: fix RT305x clock setupJohn Crispin1-0/+12
Add a few missing clocks. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5167/
2013-05-08MIPS: ralink: add RT3352 register definesJohn Crispin1-0/+13
Add a few missing defines that are needed to make USB and clock detection work on the RT3352. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5166/
2013-05-08MIPS: ralink: add PCI IRQ handlingGabor Juhos1-0/+4
The Ralink IRQ code was not handling the PCI IRQ yet. Add this functionaility to make PCI work on rt3883. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5165/
2013-05-08MIPS: move mips_{set,get}_machine_name() to a more generic placeJohn Crispin6-29/+39
Previously this functionality was only available to users of the mips_machine api. Moving the code to prom.c allows us to also add a OF wrapper. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5164/
2013-05-08MIPS: octeon: Fix GPIO number in IRQ chip private dataAlexander Sverdlin1-3/+2
Current GPIO chip implementation in octeon-irq is still broken, even after upstream commit 87161ccdc61862c8b49e75c21209d7f79dc758e9 (MIPS: Octeon: Fix broken interrupt controller code). It works for GPIO IRQs that have reset-default configuration, but not for edge-triggered ones. The problem is in octeon_irq_gpio_map_common(), which passes modified "hw" variable (which has range of possible values 16..31) as "gpio_line" parameter to octeon_irq_set_ciu_mapping(), which saves it in private data of the IRQ chip. Later, neither octeon_irq_gpio_setup() is able to re-configure GPIOs (cvmx_write_csr() is writing to non-existent CVMX_GPIO_BIT_CFGX), nor octeon_irq_ciu_gpio_ack() is able to acknowledge such IRQ, because "mask" is incorrect. Fix is trivial and has been tested on Cavium Octeon II -based board, including both level-triggered and edge-triggered GPIO IRQs. Signed-off-by: Alexander Sverdlin <alexander.sverdlin.ext@nsn.com> Cc: David Daney <david.daney@cavium.com> Acked-by: David Daney <david.daney@cavium.com> Patchwork: http://patchwork.linux-mips.org/patch/4980/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: pci: convert to devm_ioremap_resource()Silviu-Mihai Popescu2-12/+12
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. Signed-off-by: Silviu-Mihai Popescu <silviupopescu1990@gmail.com> Patchwork: http://patchwork.linux-mips.org/patch/4986/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Remove unneeded volatile from arch/mips/lib/bitops.cDavid Daney1-7/+7
The operations on the bitmap pointers are protected by "memory" clobbering raw_local_irq_{save,restore}(), so there is no need for volatile here. By removing the volatile we get better code generation out of the compiler. Signed-off-by: David Daney <david.daney@cavium.com> Patchwork: http://patchwork.linux-mips.org/patch/4966/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Init new mmu_context for each possible CPU to avoid memory corruptionHuacai Chen1-1/+1
Currently, init_new_context() only for each online CPU, this may cause memory corruption when CPU hotplug and fork() happens at the same time. To avoid this, we make init_new_context() cover each possible CPU. Scenario: 1, CPU#1 is being offline; 2, On CPU#0, do_fork() call dup_mm() and copy a mm_struct to the child; 3, On CPU#0, dup_mm() call init_new_context(), since CPU#1 is offline and init_new_context() only covers the online CPUs, child has the same asid as its parent on CPU#1 (however, child's asid should be 0); 4, CPU#1 is being online; 5, Now, if both parent and child run on CPU#1, memory corruption (e.g. segfault, bus error, etc.) will occur. Signed-off-by: Huacai Chen <chenhc@lemote.com> Acked-by: David Daney <david.daney@cavium.com> Patchwork: http://patchwork.linux-mips.org/patch/4995/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Build uasm-generated code only once to avoid CPU Hotplug problemHuacai Chen4-2/+22
This and the next patch resolve memory corruption problems while CPU hotplug. Without these patches, memory corruption can triggered easily as below: On a quad-core MIPS platform, use "spawn" of UnixBench-5.1.3 (http:// code.google.com/p/byte-unixbench/) and a CPU hotplug script like this (hotplug.sh): while true; do echo 0 >/sys/devices/system/cpu/cpu1/online echo 0 >/sys/devices/system/cpu/cpu2/online echo 0 >/sys/devices/system/cpu/cpu3/online sleep 1 echo 1 >/sys/devices/system/cpu/cpu1/online echo 1 >/sys/devices/system/cpu/cpu2/online echo 1 >/sys/devices/system/cpu/cpu3/online sleep 1 done Run "hotplug.sh" and then run "spawn 10000", spawn will get segfault after a few minutes. This patch: Currently, clear_page()/copy_page() are generated by Micro-assembler dynamically. But they are unavailable until uasm_resolve_relocs() has finished because jump labels are illegal before that. Since these functions are shared by every CPU, we only call build_clear_page()/ build_copy_page() only once at boot time. Without this patch, programs will get random memory corruption (segmentation fault, bus error, etc.) while CPU Hotplug (e.g. one CPU is using clear_page() while another is generating it in cpu_cache_init()). For similar reasons we modify build_tlb_refill_handler()'s invocation. V2: 1, Rework the code to make CPU#0 can be online/offline. 2, Introduce cpu_has_local_ebase feature since some types of MIPS CPU need a per-CPU tlb_refill_handler(). Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Hongbing Hu <huhb@lemote.com> Acked-by: David Daney <david.daney@cavium.com> Patchwork: http://patchwork.linux-mips.org/patch/4994/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Kconfig: remove "config MIPS_DISABLE_OBSOLETE_IDE"Paul Bolle2-6/+0
The Kconfig symbol MIPS_DISABLE_OBSOLETE_IDE was added in v2.6.10. It has never been used. Let's remove it. The symbol was originally introduced by the following commit commit 2bfa662b64a7ee593f3039c1d3fd81a7766a63cd Author: Pete Popov <ppopov@embeddedalley.com> Date: Tue Oct 12 06:24:19 2004 +0000 - Db1550 bug fixes - updated defconfig - updated Kconfig to use DMA_COHERENT since new silicon is coherent Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Patchwork: http://patchwork.linux-mips.org/patch/5064/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Kconfig: remove "config MIPS_BOARDS_GEN"Paul Bolle1-5/+0
The Kconfig symbol MIPS_BOARDS_GEN is unused since v2.6.27. It should now be removed. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Patchwork: http://patchwork.linux-mips.org/patch/5063/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: remove obsolete Kconfig macrosPaul Bolle1-20/+2
The support for PB1100, PB1500, and PB1550 got merged into the code for DB1000 and DB1550 code in v3.7. When that was done the three related Kconfig symbols were dropped. But not all related Kconfig macros were removed. Do so now. Note that the PB1100 code in the Au1100 LCD driver is removed entirely and not converted to use its current Kconfig macro. That is done because the macros it uses (PB1100_G_CONTROL, PB1100_G_CONTROL_BL, and PB1100_G_CONTROL_VDD) are never defined. Actually only one of these was ever defined (PB1100_G_CONTROL) but that define was removed in v2.6.34. So, as far as I can tell, this code could have never compiled. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Patchwork: http://patchwork.linux-mips.org/patch/5040/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Fix oprofile compile on XLR uniprocessorJayachandran C1-1/+1
The commit c783390a0ecef08df5c804f8c5f647431a04f502 [MIPS: oprofile: Support for XLR/XLS processors] causes a compilation failure when oprofile is enabled and SMP is not configured. arch/mips/oprofile/op_model_mipsxx.c: In function 'mipsxx_cpu_setup': arch/mips/oprofile/op_model_mipsxx.c:181:2: error: implicit declaration of function 'cpu_logical_map' To fix this, update oprofile_skip_cpu to not call cpu_logical_map when CONFIG_SMP is not defined. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5037/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Merge platform usb.h to usb-init.cJayachandran C2-77/+36
The definitions are not used anywhere else, and merging it will make adding the new USB definitions for XLPII series easier. While there, cleanup some whitespace in usb-init.c. There is no change to logic due to this commit. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5027/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Support for multiple built-in device treesJayachandran C5-8/+158
This enables us to have a default device tree per SoC family to be built into the kernel. The default device tree for XLP3xx has been added as part of this change. Later this can be used to provide support default boards for XLP2xx and XLP9xx SoCs. Kconfig options are provided for each default device tree so that just the needed ones can be selected to be built into the kernel. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5023/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Remove unused codeJayachandran C1-36/+0
Remove unused functions and redundant comments from arch/mips/include/asm/netlogic/haldefs.h Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5029/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Add 32-bit support for XLPJayachandran C1-6/+50
Update asm/netlogic/haldefs.h to extend register access functions nlm_{read,write}_reg64() for 32-bit compilation. When compiled for 32-bit the functions will read 64 IO registers with interrupts disabled. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5026/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Avoid using fixed PIC IRT indexJayachandran C2-75/+40
The index for a device interrupt in the PIC interrupt routing table changes for different chips in the XLP family. Avoid using the fixed entries and derive the index value from the SoC device header. Add workarounds for some devices which do not report the IRT index correctly. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5025/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: print cpumask with cpumask_scnprintfJayachandran C1-9/+12
Use standard function to print cpumask. Also fixup the name of the variable used and make it static. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5024/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Remove unused EIMR/EIRR functionsJayachandran C1-6/+1
Remove the definitions of {read,write}_c0_{eirr,eimr}. These functions are now unused after the PIC and IRQ code has been updated to use optimized EIMR/EIRR functions which work on both 32-bit and 64-bit. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5021/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: Netlogic: Optimize and fix write_c0_eimr()Jayachandran C1-8/+5
Remove the irq save/restore from write_c0_eimr(), as it is always called with interrupts off. This allows us to remove workaround in write_c0_eimr() to fix up the flags used by local_irq_save. This fixup worked on XLR, but will break when 32-bit support is added to r2 cpus like XLP. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/5022/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: merge bcm63xx_clk.h into bcm63xx/clk.cJonas Gorski2-12/+7
All the header file does is provide the internal structure of clk, which shouldn't be used by anyone except clk.c itself anyway. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Patchwork: http://patchwork.linux-mips.org/patch/5055/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: add flash detection for BCM6362Jonas Gorski2-0/+7
BCM6362 support booting from SPI flash and NAND. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5012/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: enable pcie for BCM6362Jonas Gorski2-3/+11
The PCIe controller is almost the same as the BCM6328 one, with only the SERDES register being at a different location. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5011/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: enable SPI controller for BCM6362Jonas Gorski3-3/+6
The SPI controller shares the same register layout as the 6358 one. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5010/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: add basic BCM6362 supportJonas Gorski11-5/+314
Add basic support for detecting and booting the BCM6362. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5009/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: rework chip detectionJonas Gorski1-45/+42
Instead of trying to use a correlation of cpu prid and chip id and hoping they will always be unique, use the cpu prid to determine the chip id register location and just read out the chip id. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5008/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: fix revision ID widthJonas Gorski4-5/+5
The REVID is only 8 bit wide. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5007/ Acked-by: John Crispin <blogic@openwrt.org>
2013-05-08MIPS: BCM63XX: remove duplicate spi register definitionsJonas Gorski3-64/+10
BCM6338 and BCM6348, and BCM6358 and everything after that share the same register layout. To not have to redefine them for each new chip and keep the code size small, only use the definitions for the first chip with the certain layout. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5006/ Acked-by: John Crispin <blogic@openwrt.org>
2013-04-14Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds8-21/+33
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Misc fixes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set x86/mm/cpa/selftest: Fix false positive in CPA self test x86/mm/cpa: Convert noop to functional fix x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates
2013-04-14Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Misc fixlets" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix error return code ftrace: Fix strncpy() use, use strlcpy() instead of strncpy() perf: Fix strncpy() use, use strlcpy() instead of strncpy() perf: Fix strncpy() use, always make sure it's NUL terminated perf: Fix ring_buffer perf_output_space() boundary calculation perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer()
2013-04-14Merge branch 'for-linus' of ↵Linus Torvalds1-0/+20
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu Pull m68knommu fix from Greg Ungerer: "This contains only a single compilation fix for ColdFire m68k targets that use local non-GPIOLIB support." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: define a local gpio_request_one() function
2013-04-12x86-32: Fix possible incomplete TLB invalidate with PAE pagetablesDave Hansen2-1/+8
This patch attempts to fix: https://bugzilla.kernel.org/show_bug.cgi?id=56461 The symptom is a crash and messages like this: chrome: Corrupted page table at address 34a03000 *pdpt = 0000000000000000 *pde = 0000000000000000 Bad pagetable: 000f [#1] PREEMPT SMP Ingo guesses this got introduced by commit 611ae8e3f520 ("x86/tlb: enable tlb flush range support for x86") since that code started to free unused pagetables. On x86-32 PAE kernels, that new code has the potential to free an entire PMD page and will clear one of the four page-directory-pointer-table (aka pgd_t entries). The hardware aggressively "caches" these top-level entries and invlpg does not actually affect the CPU's copy. If we clear one we *HAVE* to do a full TLB flush, otherwise we might continue using a freed pmd page. (note, we do this properly on the population side in pud_populate()). This patch tracks whenever we clear one of these entries in the 'struct mmu_gather', and ensures that we follow up with a full tlb flush. BTW, I disassembled and checked that: if (tlb->fullmm == 0) and if (!tlb->fullmm && !tlb->need_flush_all) generate essentially the same code, so there should be zero impact there to the !PAE case. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Artem S Tashkinov <t.artem@mailcity.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-12x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is setBoris Ostrovsky1-0/+2
When CONFIG_DEBUG_PAGEALLOC is set page table updates made by kernel_map_pages() are not made visible (via TLB flush) immediately if lazy MMU is on. In environments that support lazy MMU (e.g. Xen) this may lead to fatal page faults, for example, when zap_pte_range() needs to allocate pages in __tlb_remove_page() -> tlb_next_batch(). Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: konrad.wilk@oracle.com Link: http://lkml.kernel.org/r/1365703192-2089-1-git-send-email-boris.ostrovsky@oracle.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-12x86/mm/cpa/selftest: Fix false positive in CPA self testAndrea Arcangeli1-1/+1
If the pmd is not present, _PAGE_PSE will not be set anymore. Fix the false positive. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Stefan Bader <stefan.bader@canonical.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1365687369-30802-1-git-send-email-aarcange@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-11Merge tag 'arm-soc-fixes' of ↵Linus Torvalds10-27/+24
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC bug fixes from Arnd Bergmann: "A little later during the week than the last few pull requests, since there was very little that came in before 3.9-rc6. At least things have calmed down again here. Some important bug fixes that came in over the last 10 days, mostly mvebu and imx: - Multiple regressions on i.mx following the conversion of the clock code, hopefully the last we are seeing of those. - a regression in the mvebu irq handling code - An incorrect register offset in the rewritten s3c24xx irq code. - Two bugs in setting up the iomega_ix2_200 machine - Turning on an extra bus clock on imx - A MAINTAINERS file entry for Roland Stigge" * tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm: mvebu: Fix the irq map function in SMP mode Fix GE0/GE1 init on ix2-200 as GE0 has no PHY ARM: S3C24XX: Fix interrupt pending register offset of the EINT controller ARM: S3C24XX: Correct NR_IRQS definition for s3c2440 ARM i.MX6: Fix ldb_di clock selection ARM: imx: provide twd clock lookup from device tree ARM: imx35 Bugfix admux clock ARM: clk-imx35: Bugfix iomux clock ARM: mxs: Slow down the I2C clock speed MAINTAINERS: Add maintainer for LPC32xx ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED
2013-04-11Merge tag 'mvebu_fixes_for_v3.9_round3' of ↵Arnd Bergmann3-19/+18
git://git.infradead.org/users/jcooper/linux into fixes From Jason Cooper <jason@lakedaemon.net>: mvebu fixes for v3.9 round 3 - Kirkwood - a couple of small fixes for the Iomega ix2-200 board (ether and led) - mvebu - allow GPIO button to work on Mirabox when running SMP * tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux: arm: mvebu: Fix the irq map function in SMP mode Fix GE0/GE1 init on ix2-200 as GE0 has no PHY ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-11x86/mm/cpa: Convert noop to functional fixAndrea Arcangeli1-5/+5
Commit: a8aed3e0752b ("x86/mm/pageattr: Prevent PSE and GLOABL leftovers to confuse pmd/pte_present and pmd_huge") introduced a valid fix but one location that didn't trigger the bug that lead to finding those (small) problems, wasn't updated using the right variable. The wrong variable was also initialized for no good reason, that may have been the source of the confusion. Remove the noop initialization accordingly. Commit a8aed3e0752b also erroneously removed one canon_pgprot pass meant to clear pmd bitflags not supported in hardware by older CPUs, that automatically gets corrected by this patch too by applying it to the right variable in the new location. Reported-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Borislav Petkov <bp@alien8.de> Cc: Andy Whitcroft <apw@canonical.com> Cc: Mel Gorman <mgorman@suse.de> Link: http://lkml.kernel.org/r/1365600505-19314-1-git-send-email-aarcange@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-10Merge tag 'stable/for-linus-3.9-rc6-tag' of ↵Linus Torvalds1-4/+8
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen fixes from Konrad Rzeszutek Wilk: "Two bug-fixes: - Early bootup issue found on DL380 machines - Fix for the timer interrupt not being processed right awaym leading to quite delayed time skew on certain workloads" * tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/mmu: On early bootup, flush the TLB when changing RO->RW bits Xen provided pagetables. xen/events: Handle VIRQ_TIMER before any other hardirq in event loop.
2013-04-10Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreamingLinus Torvalds1-1/+1
Pull C6X fix from Mark Salter. Final (?) fix from the barrier discussion. * tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming: add memory barrier to arch_local_irq_restore
2013-04-10x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metalBoris Ostrovsky5-13/+21
Invoking arch_flush_lazy_mmu_mode() results in calls to preempt_enable()/disable() which may have performance impact. Since lazy MMU is not used on bare metal we can patch away arch_flush_lazy_mmu_mode() so that it is never called in such environment. [ hpa: the previous patch "Fix vmalloc_fault oops during lazy MMU updates" may cause a minor performance regression on bare metal. This patch resolves that performance regression. It is somewhat unclear to me if this is a good -stable candidate. ] Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: http://lkml.kernel.org/r/1364045796-10720-2-git-send-email-konrad.wilk@oracle.com Tested-by: Josh Boyer <jwboyer@redhat.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: <stable@vger.kernel.org> SEE NOTE ABOVE
2013-04-10x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updatesSamu Kallio1-2/+4
In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops when lazy MMU updates are enabled, because set_pgd effects are being deferred. One instance of this problem is during process mm cleanup with memory cgroups enabled. The chain of events is as follows: - zap_pte_range enables lazy MMU updates - zap_pte_range eventually calls mem_cgroup_charge_statistics, which accesses the vmalloc'd mem_cgroup per-cpu stat area - vmalloc_fault is triggered which tries to sync the corresponding PGD entry with set_pgd, but the update is deferred - vmalloc_fault oopses due to a mismatch in the PUD entries The OOPs usually looks as so: ------------[ cut here ]------------ kernel BUG at arch/x86/mm/fault.c:396! invalid opcode: 0000 [#1] SMP .. snip .. CPU 1 Pid: 10866, comm: httpd Not tainted 3.6.10-4.fc18.x86_64 #1 RIP: e030:[<ffffffff816271bf>] [<ffffffff816271bf>] vmalloc_fault+0x11f/0x208 .. snip .. Call Trace: [<ffffffff81627759>] do_page_fault+0x399/0x4b0 [<ffffffff81004f4c>] ? xen_mc_extend_args+0xec/0x110 [<ffffffff81624065>] page_fault+0x25/0x30 [<ffffffff81184d03>] ? mem_cgroup_charge_statistics.isra.13+0x13/0x50 [<ffffffff81186f78>] __mem_cgroup_uncharge_common+0xd8/0x350 [<ffffffff8118aac7>] mem_cgroup_uncharge_page+0x57/0x60 [<ffffffff8115fbc0>] page_remove_rmap+0xe0/0x150 [<ffffffff8115311a>] ? vm_normal_page+0x1a/0x80 [<ffffffff81153e61>] unmap_single_vma+0x531/0x870 [<ffffffff81154962>] unmap_vmas+0x52/0xa0 [<ffffffff81007442>] ? pte_mfn_to_pfn+0x72/0x100 [<ffffffff8115c8f8>] exit_mmap+0x98/0x170 [<ffffffff810050d9>] ? __raw_callee_save_xen_pmd_val+0x11/0x1e [<ffffffff81059ce3>] mmput+0x83/0xf0 [<ffffffff810624c4>] exit_mm+0x104/0x130 [<ffffffff8106264a>] do_exit+0x15a/0x8c0 [<ffffffff810630ff>] do_group_exit+0x3f/0xa0 [<ffffffff81063177>] sys_exit_group+0x17/0x20 [<ffffffff8162bae9>] system_call_fastpath+0x16/0x1b Calling arch_flush_lazy_mmu_mode immediately after set_pgd makes the changes visible to the consistency checks. Cc: <stable@vger.kernel.org> RedHat-Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=914737 Tested-by: Josh Boyer <jwboyer@redhat.com> Reported-and-Tested-by: Krishna Raman <kraman@redhat.com> Signed-off-by: Samu Kallio <samu.kallio@aberdeencloud.com> Link: http://lkml.kernel.org/r/1364045796-10720-1-git-send-email-konrad.wilk@oracle.com Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-10arm: mvebu: Fix the irq map function in SMP modeGregory CLEMENT1-11/+5
This patch fix the regression introduced by the commit 3202bf0157ccb "arm: mvebu: Improve the SMP support of the interrupt controller": GPIO IRQ were no longer delivered to the CPUs. To be delivered to a CPU an interrupt must be enabled at CPU level and at interrupt source level. Before the offending patch, all the interrupts were enabled at source level during map() function. Mask() and unmask() was done by handling the per-CPU part. It was fine when running in UP with only one CPU. The offending patch added support for SMP, in this case mask() and unmask() was done by handling the interrupt source level part. The per-CPU level part was handled by the affinity API to select the CPU which will receive the interrupt. (Due to some hardware limitation only one CPU at a time can received a given interrupt). For "normal" interrupt __setup_irq() was called when an irq was registered. irq_set_affinity() is called from this function, which enabled the interrupt on one of the CPUs. Whereas for GPIO IRQ which were chained interrupts, the irq_set_affinity() was never called and none of the CPUs was selected to receive the interrupt. With this patch all the interrupt are enable on the current CPU during map() function. Enabling the interrupts on a CPU doesn't depend anymore on irq_set_affinity() and then the chained irq are not anymore a special case. However the CPU which will receive the irq can still be modify later using irq_set_affinity(). Tested with Mirabox (A370) and Openblocks AX3 (AXP), rootfs mounted over NFS, compiled with CONFIG_SMP=y/N. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Reported-by: Ryan Press <ryan@presslab.us> Investigated-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Ryan Press <ryan@presslab.us> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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