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2014-12-08nios2: Use IS_ENABLED instead of #ifdefs to check config symbolsTobias Klauser1-9/+5
Make the checking for div/mul/mulx instruction config symbols easier to read by using IS_ENABLED instead of #ifdefs. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Build infrastructureLey Foon Tan15-0/+826
This patch adds Makefile and Kconfig files required for building a nios2 kernel. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08Documentation: Add documentation for Nios2 architectureLey Foon Tan1-0/+23
Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08MAINTAINERS: Add nios2 maintainerLey Foon Tan1-0/+7
Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: ptrace supportLey Foon Tan3-0/+319
Add ptrace support for nios2. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Module supportLey Foon Tan1-0/+138
This patch adds support for loadable modules. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Nios2 registersLey Foon Tan1-0/+71
This file contains constants for the instruction macros, cpu registers, fields and bits. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Miscellaneous header filesLey Foon Tan5-0/+146
This patch introduces a few nios2-specific header files. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Cpuinfo handlingLey Foon Tan2-0/+258
Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Time keepingLey Foon Tan4-0/+407
Add time keeping code for nios2. Signed-off-by: Ley Foon Tan <lftan@altera.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2014-12-08nios2: Device tree supportLey Foon Tan6-0/+375
Add device tree support to arch/nios2. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Library functionsLey Foon Tan5-0/+467
Add optimised library functions for nios2. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Signal handling supportLey Foon Tan5-0/+428
This patch adds support for signal handling. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: System calls handlingLey Foon Tan5-0/+270
This patch adds support for system calls from userspaces. It uses the asm-generic/unistd.h definitions with architecture spcific syscall. The sys_call_table is just an array defined in a C file and it contains pointers to the syscall functions. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: ELF definitionsLey Foon Tan2-0/+168
This patch adds definitions for the ELF format Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08Add ELF machine define for Nios2Ley Foon Tan1-0/+1
Signed-off-by: Ley Foon Tan <lftan@altera.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2014-12-08nios2: DMA mapping APILey Foon Tan2-0/+326
This patch adds support for the DMA mapping API. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Interrupt handlingLey Foon Tan3-0/+193
This patch adds the support for IRQ handling. Signed-off-by: Ley Foon Tan <lftan@altera.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2014-12-08nios2: TLB handlingLey Foon Tan3-0/+355
This patch adds the TLB maintenance functions. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Cache handlingLey Foon Tan3-0/+359
This patch adds functionality required for cache maintenance. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Process managementLey Foon Tan6-0/+694
This patch adds support for thread creation and context switching. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Page table managementLey Foon Tan4-0/+505
This patch adds support for page table management. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: MMU Fault handlingLey Foon Tan2-0/+276
This patch adds support for the handling of the MMU faults (exception entry code introduced by a previous patch, kernel/entry.S). Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: I/O MappingLey Foon Tan2-0/+248
This patch adds several definitions for I/O accessors and ioremap(). Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Memory managementLey Foon Tan5-0/+663
This patch contains the initialisation of the memory blocks, MMU attributes and the memory map. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Traps exception handlingLey Foon Tan3-0/+796
This patch contains traps exception handling. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Exception handlingLey Foon Tan2-0/+811
This patch contains the exception entry code (kernel/entry.S) and misaligned exception. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Kernel booting and initializationLey Foon Tan4-0/+551
This patch adds the kernel booting and the initial setup code. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Assembly macros and definitionsLey Foon Tan3-0/+417
This patch add assembly macros and definitions used in the .S files across arch/nios2/ and together with asm-offsets.c. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08asm-generic: add generic futex for !CONFIG_SMPLey Foon Tan1-0/+114
Follow m68k futex implementation for !CONFIG_SMP. Signed-off-by: Ley Foon Tan <lftan@altera.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2014-12-08Linux 3.18Linus Torvalds1-1/+1
2014-12-07Merge branch 'for-3.18-fixes' of ↵Linus Torvalds2-1/+5
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata fixes from Tejun Heo: "Three libata fixes for v3.18. Nothing too interesting. PCI ID ID and quirk additions to ahci and an error handling path fix in sata_fsl" * 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ahci: disable MSI on SAMSUNG 0xa800 SSD sata_fsl: fix error handling of irq_of_parse_and_map AHCI: Add DeviceIDs for Sunrise Point-LP SATA controller
2014-12-06Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds1-1/+1
Pull watchdog fix from Wim Van Sebroeck: "Fix the watchdog mask bit offset for Exynos7" * git://www.linux-watchdog.org/linux-watchdog: watchdog: s3c2410_wdt: Fix the mask bit offset for Exynos7
2014-12-06Merge branch 'i2c/for-current' of ↵Linus Torvalds2-5/+14
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Here are two more driver bugfixes for I2C which would be good to have" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: cadence: Set the hardware time-out register to maximum value i2c: davinci: generate STP always when NACK is received
2014-12-05watchdog: s3c2410_wdt: Fix the mask bit offset for Exynos7Abhilash Kesavan1-1/+1
The watchdog mask bit offset listed for Exynos7 is incorrect. Fix this. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Acked-by: Naveen Krishna Chatradhi <naveenkrishna.ch@gmail.com Reviewd-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-12-05Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "Two final fixlets for 3.18: - Prevent microcode reload wreckage on 32bit - Unbreak cross compilation" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, microcode: Limit the microcode reloading to 64-bit for now x86: Use $(OBJDUMP) instead of plain objdump
2014-12-05Merge tag 'sound-3.18' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixlet from Takashi Iwai: "Just one commit for adding a copule of HD-audio quirk entries" * tag 'sound-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/realtek - Add headset Mic support for new Dell machine
2014-12-05Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds2-13/+11
Pull drm intel fixes from Dave Airlie: "Two intel stable fixes, that should be it from me for this round" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/i915: Unlock panel even when LVDS is disabled drm/i915: More cautious with pch fifo underruns
2014-12-05Merge tag 'pm+acpi-3.18-rc8' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI backlight fix from Rafael Wysocki: "This is a simple fix for an ACPI backlight regression introduced by a recent commit that overlooked a corner case which should have been taken into account" * tag 'pm+acpi-3.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / video: update condition to check if device is in _DOD list
2014-12-05Merge tag 'drm-intel-fixes-2014-12-04' of ↵Dave Airlie2-13/+11
git://anongit.freedesktop.org/drm-intel into drm-fixes Silence some pch fifo underrun reports and panel locking backtraces, both cc: stable. * tag 'drm-intel-fixes-2014-12-04' of git://anongit.freedesktop.org/drm-intel: drm/i915: Unlock panel even when LVDS is disabled drm/i915: More cautious with pch fifo underruns
2014-12-05Merge tag 'media/v3.18-rc8' of ↵Linus Torvalds6-32/+28
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: "A core fix and some driver fixes: - regression fix in Remote Controller core affecting RC6 protocol handling - fix video buffer handling in cx23885 - race fix in solo6x10 - fix image selection in smiapp - fix reported payload size on s2255drv - two updates for MAINTAINERS file" * tag 'media/v3.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] rc-core: fix toggle handling in the rc6 decoder MAINTAINERS: Update mchehab's addresses [media] cx23885: use sg = sg_next(sg) instead of sg++ [media] s2255drv: fix payload size for JPG, MJPEG [media] Update MAINTAINERS for solo6x10 [media] solo6x10: fix a race in IRQ handler [media] smiapp: Only some selection targets are settable
2014-12-05uapi: fix to export linux/vm_sockets.hMasahiro Yamada1-1/+1
A typo "header=y" was introduced by commit 7071cf7fc435 ("uapi: add missing network related headers to kbuild"). Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-04i2c: cadence: Set the hardware time-out register to maximum valueVishnu Motghare1-0/+11
Cadence I2C controller has bug wherein it generates invalid read transactions after timeout in master receiver mode. This driver does not use the HW timeout and this interrupt is disabled but the feature itself cannot be disabled. Hence, this patch writes the maximum value (0xFF) to this register. This is one of the workarounds to this bug and it will not avoid the issue completely but reduces the chances of error. Signed-off-by: Vishnu Motghare <vishnum@xilinx.com> Signed-off-by: Harini Katakam <harinik@xilinx.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
2014-12-04i2c: davinci: generate STP always when NACK is receivedGrygorii Strashko1-5/+3
According to I2C specification the NACK should be handled as follows: "When SDA remains HIGH during this ninth clock pulse, this is defined as the Not Acknowledge signal. The master can then generate either a STOP condition to abort the transfer, or a repeated START condition to start a new transfer." [I2C spec Rev. 6, 3.1.6: http://www.nxp.com/documents/user_manual/UM10204.pdf] Currently the Davinci i2c driver interrupts the transfer on receipt of a NACK but fails to send a STOP in some situations and so makes the bus stuck until next I2C IP reset (idle/enable). For example, the issue will happen during SMBus read transfer which consists from two i2c messages write command/address and read data: S Slave Address Wr A Command Code A Sr Slave Address Rd A D1..Dn A P <--- write -----------------------> <--- read ---------------------> The I2C client device will send NACK if it can't recognize "Command Code" and it's expected from I2C master to generate STP in this case. But now, Davinci i2C driver will just exit with -EREMOTEIO and STP will not be generated. Hence, fix it by generating Stop condition (STP) always when NACK is received. This patch fixes Davinci I2C in the same way it was done for OMAP I2C commit cda2109a26eb ("i2c: omap: query STP always when NACK is received"). Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reported-by: Hein Tibosch <hein_tibosch@yahoo.es> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
2014-12-04ahci: disable MSI on SAMSUNG 0xa800 SSDTejun Heo1-0/+1
Just like 0x1600 which got blacklisted by 66a7cbc303f4 ("ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks"), 0xa800 chokes on NCQ commands if MSI is enabled. Disable MSI. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Dominik Mierzejewski <dominik@greysector.net> Link: https://bugzilla.kernel.org/show_bug.cgi?id=89171 Cc: stable@vger.kernel.org
2014-12-04context_tracking: Restore previous state in schedule_userAndy Lutomirski1-2/+6
It appears that some SCHEDULE_USER (asm for schedule_user) callers in arch/x86/kernel/entry_64.S are called from RCU kernel context, and schedule_user will return in RCU user context. This causes RCU warnings and possible failures. This is intended to be a minimal fix suitable for 3.18. Reported-and-tested-by: Dave Jones <davej@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-04Merge branch 'i2c/for-current' of ↵Linus Torvalds2-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c bugfixes from Wolfram Sang: "A few driver bugfixes for 3.18" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: omap: fix i207 errata handling i2c: designware: prevent early stop on TX FIFO empty i2c: omap: fix NACK and Arbitration Lost irq handling
2014-12-04Merge tag 'pci-v3.18-fixes-4' of ↵Linus Torvalds1-8/+20
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fix from Bjorn Helgaas: "This fixes a Tegra20 regression that we introduced during the v3.18 merge window" * tag 'pci-v3.18-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: tegra: Use physical range for I/O mapping
2014-12-04Merge tag 'devicetree-for-linus' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux Pull devicetree bugfix from Grant Likely: "One more bug fix for v3.18. I debated whether or not to send you this merge request because we're at such a late rc. The bug isn't critical in that there is only one system known to be affected and the patch is easy to backport. The codepath is used by pretty much every DT based system, so there is risk a of regression (it /should/ be safe, but I've been bitten by stuff that should be safe before). I've had it in linux-next for a week and haven't received any complaints. I think it probably should just be merged right away rather than waiting for the merge window and backporting. It does fix a real bug and the code is theoretically safer after the change. I can't think of any situation where it would be dangerous to reserve the DT memory an extra time. Summary from tag: Single bugfix for boot failure seen in the wild. The memory reserve code tries to be clever about reserving the FDT, but it should just go ahead and reserve it unconditionally to avoid the problem of partial overlap described in the patch" * tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: of/fdt: memblock_reserve /memreserve/ regions in the case of partial overlap
2014-12-04Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds1-6/+7
Pull block core regression fix from Jens Axboe: "Single fix for a regression introduced in this development cycle, where dm on top of dif/dix is broken. From Darrick Wong" * 'for-linus' of git://git.kernel.dk/linux-block: block: fix regression where bio_integrity_process uses wrong bio_vec iterator
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