Commit Graph

33283 Commits

Author SHA1 Message Date
Akinobu Mita
7ca43e7564 mm: use debug_kmap_atomic
Use debug_kmap_atomic in kmap_atomic, kmap_atomic_pfn, and
iomap_atomic_prot_pfn.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:14 -07:00
Akinobu Mita
f4112de6b6 mm: introduce debug_kmap_atomic
x86 has debug_kmap_atomic_prot() which is error checking function for
kmap_atomic.  It is usefull for the other architectures, although it needs
CONFIG_TRACE_IRQFLAGS_SUPPORT.

This patch exposes it to the other architectures.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:14 -07:00
Akinobu Mita
6a11f75b6a generic debug pagealloc
CONFIG_DEBUG_PAGEALLOC is now supported by x86, powerpc, sparc64, and
s390.  This patch implements it for the rest of the architectures by
filling the pages with poison byte patterns after free_pages() and
verifying the poison patterns before alloc_pages().

This generic one cannot detect invalid page accesses immediately but
invalid read access may cause invalid dereference by poisoned memory and
invalid write access can be detected after a long delay.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:13 -07:00
Alexey Dobriyan
140716934f proc tty: switch xtensa iss console to ->proc_fops
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:10 -07:00
Alexey Dobriyan
bf54215ef8 proc tty: switch ia64 simserial to ->proc_fops
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:10 -07:00
Linus Torvalds
d3d52d687a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix reset hangs on Niagara systems.
  cpumask: use mm_cpumask() wrapper: sparc
  cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: sparc
  cpumask: remove the now-obsoleted pcibus_to_cpumask(): sparc
  cpumask: remove cpu_coregroup_map: sparc
  cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc
  cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc64
  cpumask: Use accessors code.: sparc64
  cpumask: Use accessors code: sparc
  cpumask: arch_send_call_function_ipi_mask: sparc
  cpumask: Use smp_call_function_many(): sparc64
2009-03-30 18:46:12 -07:00
Linus Torvalds
d17abcd541 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask:
  oprofile: Thou shalt not call __exit functions from __init functions
  cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic
  cpumask: remove cpumask_t from core
  cpumask: convert rcutorture.c
  cpumask: use new cpumask_ functions in core code.
  cpumask: remove references to struct irqaction's mask field.
  cpumask: use mm_cpumask() wrapper: kernel/fork.c
  cpumask: use set_cpu_active in init/main.c
  cpumask: remove node_to_first_cpu
  cpumask: fix seq_bitmap_*() functions.
  cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL
2009-03-30 18:00:26 -07:00
Linus Torvalds
db6f204019 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest-and-virtio
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest-and-virtio:
  lguest: barrier me harder
  lguest: use bool instead of int
  lguest: use KVM hypercalls
  lguest: wire up pte_update/pte_update_defer
  lguest: fix spurious BUG_ON() on invalid guest stack.
  virtio: more neatening of virtio_ring macros.
  virtio: fix BAD_RING, START_US and END_USE macros
2009-03-30 17:57:39 -07:00
Linus Torvalds
cf2f7d7c90 Merge branch 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
* 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc:
  Revert "proc: revert /proc/uptime to ->read_proc hook"
  proc 2/2: remove struct proc_dir_entry::owner
  proc 1/2: do PDE usecounting even for ->read_proc, ->write_proc
  proc: fix sparse warnings in pagemap_read()
  proc: move fs/proc/inode-alloc.txt comment into a source file
2009-03-30 16:06:04 -07:00
Linus Torvalds
53d8f67082 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PCI PM: Make pci_prepare_to_sleep() disable wake-up if needed
  radeonfb: Use __pci_complete_power_transition()
  PCI PM: Introduce __pci_[start|complete]_power_transition() (rev. 2)
  PCI PM: Restore config spaces of all devices during early resume
  PCI PM: Make pci_set_power_state() handle devices with no PM support
  PCI PM: Put devices into low power states during late suspend (rev. 2)
  PCI PM: Move pci_restore_standard_config to pci-driver.c
  PCI PM: Use pci_set_power_state during early resume
  PCI PM: Consistently use variable name "error" for pm call return values
  kexec: Change kexec jump code ordering
  PM: Change hibernation code ordering
  PM: Change suspend code ordering
  PM: Rework handling of interrupts during suspend-resume
  PM: Introduce functions for suspending and resuming device interrupts
2009-03-30 15:12:14 -07:00
Alexey Dobriyan
99b7623380 proc 2/2: remove struct proc_dir_entry::owner
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.

We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.

But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.

->read_proc/->write_proc were just fixed to not require ->owner for
protection.

rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.

Removing ->owner will also make PDE smaller.

So, let's nuke it.

Kudos to Jeff Layton for reminding about this, let's say, oversight.

http://bugzilla.kernel.org/show_bug.cgi?id=12454

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-03-31 01:14:44 +04:00
Linus Torvalds
712b0006bf Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits)
  dma-debug: make memory range checks more consistent
  dma-debug: warn of unmapping an invalid dma address
  dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG
  dma-debug/x86: register pci bus for dma-debug leak detection
  dma-debug: add a check dma memory leaks
  dma-debug: add checks for kernel text and rodata
  dma-debug: print stacktrace of mapping path on unmap error
  dma-debug: Documentation update
  dma-debug: x86 architecture bindings
  dma-debug: add function to dump dma mappings
  dma-debug: add checks for sync_single_sg_*
  dma-debug: add checks for sync_single_range_*
  dma-debug: add checks for sync_single_*
  dma-debug: add checking for [alloc|free]_coherent
  dma-debug: add add checking for map/unmap_sg
  dma-debug: add checking for map/unmap_page/single
  dma-debug: add core checking functions
  dma-debug: add debugfs interface
  dma-debug: add kernel command line parameters
  dma-debug: add initialization code
  ...

Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c
2009-03-30 13:41:00 -07:00
Rafael J. Wysocki
2ed8d2b3a8 PM: Rework handling of interrupts during suspend-resume
Use the functions introduced in by the previous patch,
suspend_device_irqs(), resume_device_irqs() and check_wakeup_irqs(),
to rework the handling of interrupts during suspend (hibernation) and
resume.  Namely, interrupts will only be disabled on the CPU right
before suspending sysdevs, while device drivers will be prevented
from receiving interrupts, with the help of the new helper function,
before their "late" suspend callbacks run (and analogously during
resume).

In addition, since the device interrups are now disabled before the
CPU has turned all interrupts off and the CPU will ACK the interrupts
setting the IRQ_PENDING bit for them, check in sysdev_suspend() if
any wake-up interrupts are pending and abort suspend if that's the
case.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Ingo Molnar <mingo@elte.hu>
2009-03-30 21:46:54 +02:00
Linus Torvalds
019abbc870 Merge branch 'x86-stage-3-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-stage-3-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (190 commits)
  Revert "cpuacct: reduce one NULL check in fast-path"
  Revert "x86: don't compile vsmp_64 for 32bit"
  x86: Correct behaviour of irq affinity
  x86: early_ioremap_init(), use __fix_to_virt(), because we are sure it's safe
  x86: use default_cpu_mask_to_apicid for 64bit
  x86: fix set_extra_move_desc calling
  x86, PAT, PCI: Change vma prot in pci_mmap to reflect inherited prot
  x86/dmi: fix dmi_alloc() section mismatches
  x86: e820 fix various signedness issues in setup.c and e820.c
  x86: apic/io_apic.c define msi_ir_chip and ir_ioapic_chip all the time
  x86: irq.c keep CONFIG_X86_LOCAL_APIC interrupts together
  x86: irq.c use same path for show_interrupts
  x86: cpu/cpu.h cleanup
  x86: Fix a couple of sparse warnings in arch/x86/kernel/apic/io_apic.c
  Revert "x86: create a non-zero sized bm_pte only when needed"
  x86: pci-nommu.c cleanup
  x86: io_delay.c cleanup
  x86: rtc.c cleanup
  x86: i8253 cleanup
  x86: kdebugfs.c cleanup
  ...
2009-03-30 11:38:31 -07:00
Linus Torvalds
915db32ddb Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (21 commits)
  MIPS: Alchemy: PB1200: use SMC91X platform data.
  MIPS: Alchemy: MIPS hazard workarounds are not required.
  MIPS: Alchemy: provide cpu feature overrides.
  MIPS: Alchemy: unify CPU model constants.
  MIPS: Make a needlessly global symbol static in arch/mips/kernel/smp.c
  MIPS: Fix global namespace pollution in arch/mips/kernel/smp-up.c
  MIPS: Malta: make a needlessly global integer variable static
  MIPS: Use BUG_ON() where possible.
  MIPS: Convert obsolete irq_desc_t to struct irq_desc
  MIPS: Enable GENERIC_HARDIRQS_NO__DO_IRQ for all platforms
  MIPS: EMMA2RH: Set UART mapbase
  MIPS: EMMA2RH: Use set_irq_chip_and_handler_name
  MIPS: EMMA2RH: Use handle_edge_irq() handler for GPIO interrupts
  MIPS: Mark Eins: Fix cascading interrupt dispatcher
  MIPS: Au1000: convert to using gpiolib
  MIPS: Stop using <asm-generic/int-l64.h>.
  MIPS: Cavium: Add -Werror
  MIPS: Makefile: Add simple make install target.
  MIPS: Compat: Zero upper 32-bit of offset_high and offset_low.
  MIPS: __raw_spin_lock() may spin forever on ticket wrap.
  ...
2009-03-30 10:36:35 -07:00
Linus Torvalds
ebc8eca169 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (180 commits)
  powerpc: clean up ssi.txt, add definition for fsl,ssi-asynchronous
  powerpc/85xx: Add support for the "socrates" board (MPC8544).
  powerpc: Fix bugs introduced by sysfs changes
  powerpc: Sanitize stack pointer in signal handling code
  powerpc: Add write barrier before enabling DTL flags
  powerpc/83xx: Update ranges in gianfar node to match other dts
  powerpc/86xx: Move gianfar mdio nodes under the ethernet nodes
  powerpc/85xx: Move gianfar mdio nodes under the ethernet nodes
  powerpc/83xx: Move gianfar mdio nodes under the ethernet nodes
  powerpc/83xx: Add power management support for MPC837x boards
  powerpc/mm: Introduce early_init_mmu() on 64-bit
  powerpc/mm: Add option for non-atomic PTE updates to ppc64
  powerpc/mm: Fix printk type warning in mmu_context_nohash
  powerpc/mm: Rename arch/powerpc/kernel/mmap.c to mmap_64.c
  powerpc/mm: Merge various PTE bits and accessors definitions
  powerpc/mm: Tweak PTE bit combination definitions
  powerpc/cell: Fix iommu exception reporting
  powerpc/mm: e300c2/c3/c4 TLB errata workaround
  powerpc/mm: Used free register to save a few cycles in SW TLB miss handling
  powerpc/mm: Remove unused register usage in SW TLB miss handling
  ...
2009-03-30 10:23:53 -07:00
Stephen Rothwell
25c1a411e8 x86: fix mismerge in arch/x86/include/asm/timer.h
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-30 10:10:49 -07:00
Linus Torvalds
b94d10e7f6 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (707 commits)
  V4L/DVB (11316): saa7191: tuner ops wasn't set.
  V4L/DVB (11315): cx25840: fix 'unused variable' warning.
  V4L/DVB (11314): au8522: remove unused I2C_DRIVERID
  V4L/DVB (11313): v4l2-subdev: add enum_framesizes and enum_frameintervals.
  V4L/DVB (11312): tuner: remove V4L1 code from this driver.
  V4L/DVB (11311): v4l: replace 'ioctl' references in v4l i2c drivers
  V4L/DVB (11310): cx18: remove intermediate 'ioctl' step
  V4L/DVB (11309): cx25840: cleanup: remove intermediate 'ioctl' step
  V4L/DVB (11308): msp3400: use the V4L2 header since no V4L1 code is there
  V4L/DVB (11305): cx88: prevent probing rtc and ir devices
  V4L/DVB (11304): v4l2: remove v4l2_subdev_command calls where they are no longer needed.
  V4L/DVB (11303): tda7432: remove legacy code for old-style i2c API
  V4L/DVB (11302): tda9875: remove legacy code for old-style i2c API
  V4L/DVB (11301): wm8775: remove legacy code for old-style i2c API
  V4L/DVB (11300): cx88: convert to v4l2_subdev.
  V4L/DVB (11298): cx25840: remove legacy code for old-style i2c API
  V4L/DVB (11297): cx23885: convert to v4l2_subdev.
  V4L/DVB (11296): cx23885: bugfix error message if firmware is not found
  V4L/DVB (11295): cx23885: convert to v4l2_device.
  V4L/DVB (11293): uvcvideo: Add zero fill for VIDIOC_ENUM_FMT
  ...
2009-03-30 10:09:14 -07:00
Linus Torvalds
83826dc505 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (70 commits)
  ide: keep track of number of bytes instead of sectors in struct ide_cmd
  ide: remove ide_execute_pkt_cmd() (v2)
  ide: add ->dma_timer_expiry method and remove ->dma_exec_cmd one (v2)
  ide: set hwif->expiry prior to calling [__]ide_set_handler()
  ide: use do_rw_taskfile() for ATA_CMD_PACKET commands
  ide: pass command to ide_map_sg()
  ide: remove ide_end_request()
  ide: use ide_end_rq() in ide_complete_rq()
  ide: pass number of bytes to complete to ide_complete_rq()
  ide: remove BUG() from ide_complete_rq()
  ide: move rq->errors quirk out from ide_end_request()
  ide: pass error value to ide_complete_rq()
  ide: sanitize ide_end_rq()
  ide: add ide_end_rq() (v2)
  ide: make ide_special_rq() BUG() on unknown requests
  ide: sanitize ide_finish_cmd()
  ide: use ide_complete_cmd() for REQ_UNPARK_HEADS
  ide: use ide_complete_cmd() for head unload commands
  ide: task_error() -> task_error_cmd()
  ide: unify exit paths in task_pio_intr()
  ...
2009-03-30 10:05:43 -07:00
Sascha Hauer
d42574d1d2 V4L/DVB (11034): soc-camera: remove now unused gpio member of struct soc_camera_link
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30 12:43:22 -03:00
Sascha Hauer
d75b1dcc84 V4L/DVB (11031): pcm990 baseboard: add camera bus width switch setting
Some Phytec cameras have a I2C GPIO expander which allows it to
switch between different sensor bus widths. This was previously
handled in the camera driver. Since handling of this switch
varies on several boards the cameras are used on, the board
support seems a better place to handle the switch

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30 12:43:21 -03:00
Guennadi Liakhovetski
4f67130ad3 V4L/DVB (10674): soc-camera: camera host driver for i.MX3x SoCs
Tested with 8 bit Bayer and 8 bit monochrome video.

 create mode 100644 arch/arm/plat-mxc/include/mach/mx3_camera.h
 create mode 100644 drivers/media/video/mx3_camera.c

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30 12:42:53 -03:00
Guennadi Liakhovetski
2d9329f3a5 V4L/DVB (10665): soc-camera: add data signal polarity flags to drivers
All soc-camera camera and host drivers must specify supported data signal
polarity, after all drivers are fixed, we'll add a suitable test to
soc_camera_bus_param_compatible().

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30 12:42:52 -03:00
Manuel Lauss
91e8a30e90 MIPS: Alchemy: PB1200: use SMC91X platform data.
Add platform data for the smc91x on the PB1200/DB1200, and remove the
now unused AU1X00 entry in smc91x.h.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
2009-03-30 14:49:46 +02:00
Manuel Lauss
2f794d099d MIPS: Alchemy: MIPS hazard workarounds are not required.
The Alchemy manuals state:

"All pipeline hazards and dependencies are enforced by hardware interlocks
 so that any sequence of instructions is guaranteed to execute correctly.
 Therefore, it is not necessary to pad legacy MIPS hazards (such as
 load delay slots and coprocessor accesses) with NOPs."

Run-tested on Au12x0, without any ill effects.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:46 +02:00
Manuel Lauss
32647e0c1f MIPS: Alchemy: provide cpu feature overrides.
Add cpu feature override constants tailored for all Alchemy variants
currently in existence.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/include/asm/mach-au1x00/cpu-feature-overrides.h
2009-03-30 14:49:46 +02:00
Manuel Lauss
270717a8a0 MIPS: Alchemy: unify CPU model constants.
This patch removes the various CPU_AU1??? model constants in favor of
a single CPU_ALCHEMY one.

All currently existing Alchemy models are identical in terms of cpu
core and cache size/organization.  The parts of the mips kernel which
need to know the exact CPU revision extract it from the c0_prid register
already; and finally nothing else in-tree depends on those any more.

Should a new variant with slightly different "company options" and/or
"processor revision" bits in c0_prid appear, it will be supported
immediately (minus an exact model string in cpuinfo).

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:45 +02:00
Dmitri Vorobiev
76544504ae MIPS: Make a needlessly global symbol static in arch/mips/kernel/smp.c
The variable cpu_callin_map is needlessly defined global, so let's
make it static now.

Build-tested using malta_defconfig.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:45 +02:00
Dmitri Vorobiev
1451a395a8 MIPS: Fix global namespace pollution in arch/mips/kernel/smp-up.c
The following symbols in arch/mips/kernel/smp-up.c are needlessly
defined global:

up_send_ipi_single()
up_init_secondary()
up_smp_finish()
up_cpus_done()
up_boot_secondary()
up_smp_setup()
up_prepare_cpus()

This patch makes the symbols static.

Build-tested using malta_defconfig.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:45 +02:00
Dmitri Vorobiev
d0cdfe2423 MIPS: Malta: make a needlessly global integer variable static
The variable `mips_revision_corid' is needlessly defined global in
arch/mips/mti-malta/malta-init.c, and this patch makes it static.

Build-tested with malta_defconfig.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:45 +02:00
Ralf Baechle
b72b7092f8 MIPS: Use BUG_ON() where possible.
Based on original patch by Stoyan Gaydarov <stoyboyker@gmail.com> which
missed a few places.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:44 +02:00
Thomas Gleixner
ae03550500 MIPS: Convert obsolete irq_desc_t to struct irq_desc
Impact: cleanup

Convert the last remaining users to struct irq_desc.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:44 +02:00
Ralf Baechle
c87e09096d MIPS: Enable GENERIC_HARDIRQS_NO__DO_IRQ for all platforms
__do_IRQ() is deprecated and will go away.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:44 +02:00
Shinya Kuribayashi
3e168ae286 MIPS: EMMA2RH: Set UART mapbase
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:43 +02:00
Shinya Kuribayashi
ae3c1d3771 MIPS: EMMA2RH: Use set_irq_chip_and_handler_name
Fix two remaining set_irq_chip_and_handler() users which are encourated
to migrate to set_irq_chip_and_handler_name().

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:43 +02:00
Shinya Kuribayashi
8da55bb258 MIPS: EMMA2RH: Use handle_edge_irq() handler for GPIO interrupts
EMMA's GPIO interrupts are latched by GPIO interrupt status register.
In this case, we're encouraged to use handle_edge_irq() handler.

The following changes are made along with replacing set_irq_chip() with
set_irq_chip_and_handler_name(,,handle_edge_irq,"edge"):

* Fix emma2rh_gpio_irq_ack not to disable interrupts

  With handle_edge_irq(), we're not expected to disable interrupts
  when chip->ack is served, so fix it accordingly.  We also add a new
  emma2rh_gpio_irq_mask_ack() for chip->mask_ack operation, instead.

* Remove emma2rh_gpio_irq_end(), as chip->end is no longer served.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:43 +02:00
Shinya Kuribayashi
fb2826b7f6 MIPS: Mark Eins: Fix cascading interrupt dispatcher
* Fix mis-calculated IRQ bitshift on cascading interrupts
* Prevent cascading interrupt from being processed afterward

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:42 +02:00
Florian Fainelli
47c969ee54 MIPS: Au1000: convert to using gpiolib
This patch converts the GPIO board code to use gpiolib.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:42 +02:00
Ralf Baechle
12e22e8e60 MIPS: Stop using <asm-generic/int-l64.h>.
This fixes a few warnings - and triggers a few new ones which the rest of
this patch fixes.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:41 +02:00
Ralf Baechle
2da0ba2d27 MIPS: Cavium: Add -Werror
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:41 +02:00
Ralf Baechle
59968d3bb9 MIPS: Makefile: Add simple make install target.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:40 +02:00
Ralf Baechle
d6c178e969 MIPS: Compat: Zero upper 32-bit of offset_high and offset_low.
Through sys_llseek() arguably should do exactly that it doesn't which
means llseek(2) will fail for o32 processes if offset_low has bit 31 set.

As suggested by Heiko Carstens.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:40 +02:00
David Daney
0e6826c73c MIPS: __raw_spin_lock() may spin forever on ticket wrap.
If the lock is not acquired and has to spin *and* the second attempt
to acquire the lock fails, the delay time is not masked by the ticket
range mask.  If the ticket number wraps around to zero, the result is
that the lock sampling delay is essentially infinite (due to casting
-1 to an unsigned int).

The fix: Always mask the difference between my_ticket and the current
ticket value before calculating the delay.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-30 14:49:39 +02:00
Ralf Baechle
f5fd02a33e MIPS: Forward declare struct task_struct to avoid potencial warning. 2009-03-30 14:49:39 +02:00
Rusty Russell
1a8a51004a cpumask: remove references to struct irqaction's mask field.
Impact: cleanup

It's unused, since about 1995.  So remove all initialization of it in
preparation for actually removing the field.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2009-03-30 22:05:14 +10:30
Rusty Russell
0451fb2ebc cpumask: remove node_to_first_cpu
Everyone defines it, and only one person uses it
(arch/mips/sgi-ip27/ip27-nmi.c).  So just open code it there.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-mips@linux-mips.org
2009-03-30 22:05:12 +10:30
Matias Zabaljauregui
4cd8b5e2a1 lguest: use KVM hypercalls
Impact: cleanup

This patch allow us to use KVM hypercalls

Signed-off-by: Matias Zabaljauregui <zabaljauregui at gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-03-30 21:55:24 +10:30
Rusty Russell
b7ff99ea53 lguest: wire up pte_update/pte_update_defer
Impact: intermittent guest segv/crash fix

I've been seeing random guest bad address crashes and segmentation faults:
bisect led to 4f98a2fee8 (vmscan: split LRU lists into anon & file sets),
but that's a red herring.

It turns out that lguest never hooked up the pte_update/pte_update_defer
calls, so our ptes were not always in sync.  After the vmscan commit, the
bug became reproducible; now a fsck in a 64MB guest causes reproducible
pagetable corruption.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: jeremy@xensource.com
Cc: virtualization@lists.osdl.org
Cc: stable@kernel.org
2009-03-30 21:55:24 +10:30
Benjamin Herrenschmidt
9ff9a26b78 Merge commit 'origin/master' into next
Manual merge of:
	arch/powerpc/include/asm/elf.h
	drivers/i2c/busses/i2c-mpc.c
2009-03-30 14:04:53 +11:00
Benjamin Herrenschmidt
0a3108beea Merge commit 'kumar/next' into next 2009-03-30 13:46:19 +11:00