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2012-12-18xtensa: set the correct ethernet address for xtfpgaChris Zankel1-2/+34
The last byte of the mac address is determined by a DIP switch, so update the OF property with that address. Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: clean up files to make them code-style compliantChris Zankel49-175/+160
Remove heading and trailing spaces, trim trailing lines, and wrap lines that are longer than 80 characters. Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: provide endianness macro for sparseMax Filippov1-0/+7
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: fix RASID SR initializationMax Filippov1-1/+1
set_rasid_register accepts new RASID SR value, but ASID_USER_FIRST is ASID value for the ring 1; RASID value is made by ASID_INSERT macro. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: initialize CPENABLE SR when core has oneMax Filippov1-1/+1
XCHAL_CP_NUM is defined in variant/tie.h and it is not included by head.S, leaving CPENABLE register uninitialised. XCHAL_HAVE_CP is defined in variant/core.h to 1 when core has CPENABLE SR. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: reset all timers on initializationMax Filippov1-1/+1
There are XCHAL_NUM_TIMERS, reset them all. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18Use for_each_compatible_node() macro.Wei Yongjun1-2/+2
Signed-off-by: Wei Yongjun <[email protected]> Acked-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add XTFPGA DTSMax Filippov5-0/+122
Add common XTFPGA parts as *.dtsi (base board, flash) and DTS for LX60 and for ML605. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add support for the XTFPGA boardsMax Filippov9-0/+472
The Avnet LX60/LX110/LX200 board is an FPGA board that can be configured with an Xtensa processor and an OpenCores Ethernet device. Signed-off-by: Chris Zankel <[email protected]> Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add device trees supportMax Filippov7-25/+164
Device trees allow specification of hardware topology and device parameters at runtime instead of hard-coding them in platform setup code. This allows running single binary kernel on a range of compatible boards. New boot parameters tag BP_TAG_FDT is allocated and a pointer to flat device tree is passed in it. Note that current interrupt mapping scheme uses single cell for interrupt identification. That means that IRQ numbers used in DTS must be CPU internal IRQ numbers, not external. It is possible to extend interrupt identification to two cells, and use second cell to tell external IRQ numbers form internal. That would allow to use single DTS on multiple boards with different mapping of external IRQ numbers. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add IRQ domains supportMax Filippov3-34/+94
IRQ domains provide a mechanism for conversion of linux IRQ numbers to hardware IRQ numbers and vice versus. It is used by OpenFirmware for linking device tree objects to their respective interrupt controllers. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add U-Boot image support (uImage).Max Filippov2-1/+16
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: clean up boot make rulesMax Filippov3-29/+33
- remove duplicate rules for binary and packed image - use predefined macros for ld/objcopy/gzip - remove build-id section from bootable elf image Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: fix mb and wmb definitionsMax Filippov1-3/+3
Define mb and wmb as memw to force memory barrier. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add s32c1i-based spinlock implementationsMax Filippov1-1/+187
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add s32c1i-based bitops implementationsMax Filippov1-1/+126
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add s32c1i-based atomic ops implementationsMax Filippov2-106/+236
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add s32c1i sanity checkMax Filippov3-0/+135
Add a brief sanity test of S32C1I functionality. This instruction is needed by the kernel and userland as part of the base ABI (including GCC atomic builtins, certain threading packages, future atomic support in the C++ standard, etc). However, correct operation of this instruction requires some cooperation by hardware external to the processor (such as bus bridge, bus fabric, or memory controller). Minimally exercising this mechanism and reporting explicit status early in the boot process is helpful to chip vendors using the Linux kernel as a benchmark of correctness of hardware. As it turns out, S32C1I is not exercised by the kernel and by uClibc based userland as of early June 2008. This is expected to change soon as both incorporate more recent open source developments. Signed-off-by: Marc Gauthier <[email protected]> Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add trap_set_handler functionMax Filippov2-0/+34
trap_set_handler sets new C-handler in the exception table and returns previous handler. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: initialize atomctl SRMax Filippov3-0/+102
In order to use S32C1I instruction on cores with ATOMCTL SR the register must be properly initialized. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: save and restore scompare1 SR on kernel entryMax Filippov3-1/+15
Although scompare1 may be saved/restored by xchal_ncp_{load,store} macros, explicit save/restore of registers manipulated by the kernel itself is considered more correct. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: display s32c1i feature flag in cpuinfoMax Filippov1-0/+3
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: fix CPU cache flags formattingMax Filippov1-3/+3
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: properly fix missing compiler barrier in simcallMax Filippov1-6/+1
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: fix build warning for arch/xtensa/mm/tlb.cMax Filippov1-1/+1
Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: provide DMA_ERROR_CODE definitionMax Filippov1-0/+2
This fixes the following allmodconfig build error: drivers/uio/uio_dmem_genirq.c:95:18: error: 'DMA_ERROR_CODE' undeclared (first use in this function) drivers/uio/uio_dmem_genirq.c:238:18: error: 'DMA_ERROR_CODE' undeclared (first use in this function) make[3]: *** [drivers/uio/uio_dmem_genirq.o] Error 1 Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: ISS: add BASE_BAUD definition to serial.hMax Filippov1-0/+15
This fixes the following build error in allyesconfig: drivers/tty/serial/8250/8250_early.c: In function 'parse_options': drivers/tty/serial/8250/8250_early.c:160:18: error: 'BASE_BAUD' undeclared (first use in this function) Reported-by: Fengguang Wu <[email protected]> Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: provide proper assembler function boundaries with ENDPROC()Chris Zankel7-25/+147
Use ENDPROC() to mark the end of assembler functions. Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: make DoubleExceptionVector literals fit the gapMax Filippov1-4/+10
Manually load references to exc_table from the explicit literal in order to fit DoubleExceptionVector.literals into the available 16-byte gap before DoubleExceptionVector.text in the absence of link time relaxation. Without this fix DoubleExceptionVector.literal section overlaps DoubleExceptionVector.text section in the linked vmlinux image. Signed-off-by: Max Filippov <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: add config option to disable linker relaxationChris Zankel2-2/+15
The default linker behavior is to optimize identical literal values and remove unnecessary overhead from assembler-generated "longcall" sequences to reduce code size. Provide an option to disable this behavior to improve compile time. Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa: unbalanced parenthesesNicolas Kaiser1-2/+2
Signed-off-by: Nicolas Kaiser <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18xtensa:fix the incompatible pointer type warning in time.cWanlong Gao1-1/+1
Fix the definition of the function ccount_read to be compatible to the member read of the structure clocksource. Signed-off-by: Wanlong Gao <[email protected]> Signed-off-by: Chris Zankel <[email protected]>
2012-12-18ARM: SAMSUNG: Add missing include guard to gpio-core.hMichael Spang1-0/+5
Signed-off-by: Michael Spang <[email protected]> Signed-off-by: Kukjin Kim <[email protected]>
2012-12-18pinctrl: exynos5440/samsung: Staticize pcfgsAxel Lin2-2/+2
I got below build error with random config if CONFIG_PINCTRL_SAMSUNG=y && CONFIG_PINCTRL_EXYNOS5440=y. Fix the build error by making pcfgs static. LD drivers/pinctrl/built-in.o drivers/pinctrl/pinctrl-exynos5440.o: In function `.LANCHOR0': pinctrl-exynos5440.c:(.data+0x54): multiple definition of `pcfgs' drivers/pinctrl/pinctrl-samsung.o:pinctrl-samsung.c:(.data+0x54): first defined here make[2]: *** [drivers/pinctrl/built-in.o] Error 1 make[1]: *** [drivers/pinctrl] Error 2 make: *** [drivers] Error 2 Signed-off-by: Axel Lin <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Thomas Abraham <[email protected]> Signed-off-by: Kukjin Kim <[email protected]>
2012-12-18pinctrl: samsung: Fix a typo in pinctrl-samsung.hSachin Kamat1-1/+1
struct samsung_pin_bank does not have a member called reg_offset. It should be pctl_offset instead. Signed-off-by: Sachin Kamat <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Kukjin Kim <[email protected]>
2012-12-18ARM: EXYNOS: fix skip scu_enable() for EXYNOS5440Kukjin Kim1-1/+1
Signed-off-by: Kukjin Kim <[email protected]>
2012-12-18ARM: EXYNOS: fix GIC using for EXYNOS5440Kukjin Kim1-1/+2
Signed-off-by: Kukjin Kim <[email protected]>
2012-12-18ARM: EXYNOS: fix build error when MFC is not selectedKukjin Kim1-0/+2
This fixes following: arch/arm/mach-exynos/built-in.o: In function `exynos5_reserve': arch/arm/mach-exynos/mach-exynos5-dt.c:177: undefined reference to `s5p_fdt_find_mfc_mem' arch/arm/mach-exynos/mach-exynos5-dt.c:177: undefined reference to `s5p_fdt_find_mfc_mem' arch/arm/mach-exynos/mach-exynos5-dt.c:178: undefined reference to `s5p_mfc_reserve_mem' Signed-off-by: Kukjin Kim <[email protected]>
2012-12-18Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linuxLinus Torvalds27-359/+1480
Pull i2c-embedded changes from Wolfram Sang: - CBUS driver (an I2C variant) - continued rework of the omap driver - s3c2410 gets lots of fixes and gains pinctrl support - at91 gains DMA support - the GPIO muxer gains devicetree probing - typical fixes and additions all over * 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux: (45 commits) i2c: omap: Remove the OMAP_I2C_FLAG_RESET_REGS_POSTIDLE flag i2c: at91: add dma support i2c: at91: change struct members indentation i2c: at91: fix compilation warning i2c: mxs: Do not disable the I2C SMBus quick mode i2c: mxs: Handle i2c DMA failure properly i2c: s3c2410: Remove recently introduced performance overheads i2c: ocores: Move grlib set/get functions into #ifdef CONFIG_OF block i2c: s3c2410: Add fix for i2c suspend/resume i2c: s3c2410: Fix code to free gpios i2c: i2c-cbus-gpio: introduce driver i2c: ocores: Add support for the GRLIB port of the controller and use function pointers for getreg and setreg functions i2c: ocores: Add irq support for sparc i2c: omap: Move the remove constraint ARM: dts: cfa10049: Add the i2c muxer buses to the CFA-10049 i2c: s3c2410: do not special case HDMIPHY stuck bus detection i2c: s3c2410: use exponential back off while polling for bus idle i2c: s3c2410: do not generate STOP for QUIRK_HDMIPHY i2c: s3c2410: grab adapter lock while changing i2c clock i2c: s3c2410: Add support for pinctrl ...
2012-12-18Revert "Btrfs: reorder tree mod log operations in deleting a pointer"Chris Mason1-6/+4
This reverts commit 6a7a665d78c5dd8bc76a010648c4e7d84517ab5a. This was bug was fixed differently in 3.6, so this commit isn't needed. Conflicts: fs/btrfs/ctree.c Signed-off-by: Chris Mason <[email protected]>
2012-12-18net: fec: forbid FEC_PTP on SoCs that do not supportShawn Guo1-2/+1
Beside imx6q, the kernel built from imx_v6_v7_defconfig is also supposed to be running on other IMX SoCs that do not have the PTP block. Before fec driver gets fixed to run-time detect target hardware rather than conditional compiling with #ifdef CONFIG_FEC_PTP, let's give it a quick fix in Kconfig to forbid FEC_PTP on those IMX SoCs that do not support PTP. Reported-by: Sascha Hauer <[email protected]> Signed-off-by: Shawn Guo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-12-18be2net: fix wrong frag_idx reported by RX CQSathya Perla2-7/+33
The RX CQ can report completions with invalid frag_idx when the RXQ that was *previously* using it, was not cleaned up properly. This hits a BUG_ON() in be2net. When completion coalescing is enabled on a CQ, an explicit CQ-notify (with rearm) is needed for each compl, to flush partially coalesced CQ entries that are pending DMA. In be_close(), this fix now notifies CQ for each compl, waits explicitly for the flush compl to arrive and complains if it doesn't arrive. Also renaming be_crit_error() to be_hw_error() as it's the more appropriate name and to convey that we don't wait for the flush compl only when a HW error has occurred. Signed-off-by: Sathya Perla <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-12-18be2net: fix be_close() to ensure all events are ack'edSathya Perla2-9/+17
In be_close(), be_eq_clean() must be called after all RX/TX/MCC queues have been cleaned to ensure that any events caused while cleaning up completions are notified/acked. Not clearing all events can cause upredictable behaviour when RX rings are re-created in the subsequent be_open(). Signed-off-by: Sathya Perla <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-12-18sparc64: Define pte_accessible()David S. Miller1-1/+7
We can elide flush_tlb_*() calls when _PAGE_VALID is clear as that is the test used to determine whether or not to queue up a TLB flush in set_pte_at(). Signed-off-by: David S. Miller <[email protected]>
2012-12-18sparc: huge_ptep_set_* functions need to call set_huge_pte_at()Dave Kleikamp1-2/+8
Modifying the huge pte's requires that all the underlying pte's be modified. Version 2: added missing flush_tlb_page() Signed-off-by: Dave Kleikamp <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: [email protected] Signed-off-by: David S. Miller <[email protected]>
2012-12-18Merge branch 'akpm' (more patches from Andrew)Linus Torvalds38-204/+2407
Merge patches from Andrew Morton: "Most of the rest of MM, plus a few dribs and drabs. I still have quite a few irritating patches left around: ones with dubious testing results, lack of review, ones which should have gone via maintainer trees but the maintainers are slack, etc. I need to be more activist in getting these things wrapped up outside the merge window, but they're such a PITA." * emailed patches from Andrew Morton <[email protected]>: (48 commits) mm/vmscan.c: avoid possible deadlock caused by too_many_isolated() vmscan: comment too_many_isolated() mm/kmemleak.c: remove obsolete simple_strtoul mm/memory_hotplug.c: improve comments mm/hugetlb: create hugetlb cgroup file in hugetlb_init mm/mprotect.c: coding-style cleanups Documentation: ABI: /sys/devices/system/node/ slub: drop mutex before deleting sysfs entry memcg: add comments clarifying aspects of cache attribute propagation kmem: add slab-specific documentation about the kmem controller slub: slub-specific propagation changes slab: propagate tunable values memcg: aggregate memcg cache values in slabinfo memcg/sl[au]b: shrink dead caches memcg/sl[au]b: track all the memcg children of a kmem_cache memcg: destroy memcg caches sl[au]b: allocate objects from memcg cache sl[au]b: always get the cache from its page in kmem_cache_free() memcg: skip memcg kmem allocations in specified code regions memcg: infrastructure to match an allocation to the right cache ...
2012-12-18Merge tag 'hwmon-for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixlet from Guenter Roeck: "Fix fallout from __devexit removal" * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (twl4030-madc-hwmon) Fix warning message caused by removal of __devexit
2012-12-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds6-34/+126
Pull tile updates from Chris Metcalf: "These are a smattering of minor changes from Tilera and other folks, mostly in the ptrace area." * git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: set CORE_DUMP_USE_REGSET on tile arch/tile: implement arch_ptrace using user_regset on tile arch/tile: implement user_regset interface on tile arch/tile: clean up tile-specific PTRACE_SETOPTIONS arch/tile: provide PT_FLAGS_COMPAT value in pt_regs tile/PCI: use for_each_pci_dev to simplify the code tilegx: remove __init from pci fixup hook
2012-12-18mm/vmscan.c: avoid possible deadlock caused by too_many_isolated()Fengguang Wu1-0/+8
Neil found that if too_many_isolated() returns true while performing direct reclaim we can end up waiting for other threads to complete their direct reclaim. If those threads are allowed to enter the FS or IO to free memory, but this thread is not, then it is possible that those threads will be waiting on this thread and so we get a circular deadlock. some task enters direct reclaim with GFP_KERNEL => too_many_isolated() false => vmscan and run into dirty pages => pageout() => take some FS lock => fs/block code does GFP_NOIO allocation => enter direct reclaim again => too_many_isolated() true => waiting for others to progress, however the other tasks may be circular waiting for the FS lock.. The fix is to let !__GFP_IO and !__GFP_FS direct reclaims enjoy higher priority than normal ones, by lowering the throttle threshold for the latter. Allowing ~1/8 isolated pages in normal is large enough. For example, for a 1GB LRU list, that's ~128MB isolated pages, or 1k blocked tasks (each isolates 32 4KB pages), or 64 blocked tasks per logical CPU (assuming 16 logical CPUs per NUMA node). So it's not likely some CPU goes idle waiting (when it could make progress) because of this limit: there are much more sleeping reclaim tasks than the number of CPU, so the task may well be blocked by some low level queue/lock anyway. Now !GFP_IOFS reclaims won't be waiting for GFP_IOFS reclaims to progress. They will be blocked only when there are too many concurrent !GFP_IOFS reclaims, however that's very unlikely because the IO-less direct reclaims is able to progress much more faster, and they won't deadlock each other. The threshold is raised high enough for them, so that there can be sufficient parallel progress of !GFP_IOFS reclaims. [[email protected]: tweak comment] Signed-off-by: Wu Fengguang <[email protected]> Cc: Torsten Kaiser <[email protected]> Tested-by: NeilBrown <[email protected]> Reviewed-by: Minchan Kim <[email protected]> Acked-by: KOSAKI Motohiro <[email protected]> Acked-by: Rik van Riel <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Johannes Weiner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-12-18vmscan: comment too_many_isolated()Fengguang Wu1-1/+5
Comment "Why it's doing so" rather than "What it does" as proposed by Andrew Morton. Signed-off-by: Wu Fengguang <[email protected]> Reviewed-by: KOSAKI Motohiro <[email protected]> Reviewed-by: Minchan Kim <[email protected]> Reviewed-by: Rik van Riel <[email protected]> Cc: Mel Gorman <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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