Commit Graph

209995 Commits

Author SHA1 Message Date
Ingo Molnar
7de5d895b2 Merge branch 'linus' into perf/core
Merge reason: pick up perf fixes

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-08-25 13:10:00 +02:00
Lin Ming
04fba67163 perf: Remove unused variable
This fixes the following build warning introduced by the
callchain rework:

  arch/x86/kernel/cpu/perf_event.c:1574: warning: ‘perf_callchain_entry_nmi’ defined but not used

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1282718949.16443.75.camel@minggr.sh.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-08-25 13:09:41 +02:00
Linus Torvalds
502adf5778 Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  watchdog: Don't throttle the watchdog
  tracing: Fix timer tracing
2010-08-24 12:21:49 -07:00
Linus Torvalds
3b6c5507a6 Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  mutex: Improve the scalability of optimistic spinning
2010-08-24 12:21:02 -07:00
Luck, Tony
8ca3eb0809 guard page for stacks that grow upwards
pa-risc and ia64 have stacks that grow upwards. Check that
they do not run into other mappings. By making VM_GROWSUP
0x0 on architectures that do not ever use it, we can avoid
some unpleasant #ifdefs in check_stack_guard_page().

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-24 12:13:20 -07:00
Jesse Barnes
9559fcdbff drm/i915: fix vblank wait test condition
When converting this to the new wait_for macro I inverted the wait
condition, which causes all sorts of problems.  So correct it to fix
several failures caused by the bad wait (flickering, bad output
detection, tearing, etc.).

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-24 11:41:08 -07:00
Linus Torvalds
f4e385ccfc Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] fix tlb flushing vs. concurrent /proc accesses
  [S390] s390: fix build error (sys_execve)
2010-08-24 10:43:08 -07:00
Jianwei Yang
32e2f63bcc intel_scu_ipc: fix IPC i2c write bug
We should pass the data to the data register.

Signed-off-by: Jianwei Yang <jianwei.yang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-24 10:42:09 -07:00
Ossama Othman
a9728c9a31 rar: Fix off by one error
It looks like there is an off-by-one error in one of your changes to
drivers/staging/rar_register/rar_register.c:

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-24 10:42:08 -07:00
Ingo Molnar
577ba406e1 V4L/DVB: mantis: Fix IR_CORE dependency
This build bug triggers:

 drivers/built-in.o: In function `mantis_exit':
 (.text+0x377413): undefined reference to `ir_input_unregister'
 drivers/built-in.o: In function `mantis_input_init':
 (.text+0x3774ff): undefined reference to `__ir_input_register'

If MANTIS_CORE is enabled but IR_CORE is not. Add the correct
dependency.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-24 10:42:08 -07:00
Linus Torvalds
1a7c55368c 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: Get rid of indirect p1275 PROM call buffer.
  sparc64: Fill a missing delay slot.
  sparc64: Make lock backoff really a NOP on UP builds.
  sparc64: simple microoptimizations for atomic functions
  sparc64: Make rwsems 64-bit.
  sparc64: Really fix atomic64_t interface types.
2010-08-24 10:10:13 -07:00
Martin Schwidefsky
050eef364a [S390] fix tlb flushing vs. concurrent /proc accesses
The tlb flushing code uses the mm_users field of the mm_struct to
decide if each page table entry needs to be flushed individually with
IPTE or if a global flush for the mm_struct is sufficient after all page
table updates have been done. The comment for mm_users says "How many
users with user space?" but the /proc code increases mm_users after it
found the process structure by pid without creating a new user process.
Which makes mm_users useless for the decision between the two tlb
flusing methods. The current code can be confused to not flush tlb
entries by a concurrent access to /proc files if e.g. a fork is in
progres. The solution for this problem is to make the tlb flushing
logic independent from the mm_users field.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-08-24 09:26:34 +02:00
Linus Torvalds
bd45fe539f Merge git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits)
  powerpc: Fix config dependency problem with MPIC_U3_HT_IRQS
  via-pmu: Add compat_pmu_ioctl
  powerpc: Wire up fanotify_init, fanotify_mark, prlimit64 syscalls
  powerpc/pci: Fix checking for child bridges in PCI code.
  powerpc: Fix typo in uImage target
  powerpc: Initialise paca->kstack before early_setup_secondary
  powerpc: Fix bogus it_blocksize in VIO iommu code
  powerpc: Inline ppc64_runlatch_off
  powerpc: Correct smt_enabled=X boot option for > 2 threads per core
  powerpc: Silence xics_migrate_irqs_away() during cpu offline
  powerpc: Silence __cpu_up() under normal operation
  powerpc: Re-enable preemption before cpu_die()
  powerpc/pci: Drop unnecessary null test
  powerpc/powermac: Drop unnecessary null test
  powerpc/powermac: Drop unnecessary of_node_put
  powerpc/kdump: Stop all other CPUs before running crash handlers
  powerpc/mm: Fix vsid_scrample typo
  powerpc: Use is_32bit_task() helper to test 32 bit binary
  powerpc: Export memstart_addr and kernstart_addr on ppc64
  powerpc: Make rwsem use "long" type
  ...
2010-08-24 00:26:34 -07:00
Sebastian Ott
7af048dc76 [S390] s390: fix build error (sys_execve)
fix this build error:
arch/s390/kernel/process.c:272: error: conflicting types for 'sys_execve'
arch/s390/kernel/entry.h:45: error: previous declaration of 'sys_execve' was here
make[1]: *** [arch/s390/kernel/process.o] Error 1
make: *** [arch/s390/kernel] Error 2

introduced by d7627467b7

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-08-24 09:26:34 +02:00
Linus Torvalds
e1f1f07334 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  Staging: sep: remove driver
  Staging: batman-adv: Don't write in not allocated packet_buff
  Staging: batman-adv: Don't use net_dev after dev_put
  Staging: batman-adv: Create batman_if only on register event
  Staging: batman-adv: fix own mac address detection
  Staging: batman-adv: always reply batman icmp packets with primary mac
  Staging: batman-adv: fix batman icmp originating from secondary interface
  Staging: batman-adv: unify orig_hash_lock spinlock handling to avoid deadlocks
  Staging: batman-adv: Fix merge of linus tree
  Staging: spectra: removes unused functions
  Staging: spectra: initializa lblk variable
  Staging: spectra: removes unused variable
  Staging: spectra: remove duplicate GLOB_VERSION definition
  Staging: spectra: don't use locked_ioctl, fix build
  Staging: use new REQ_FLUSH flag, fix build breakage
  Staging: spectra: removes q->prepare_flush_fn, fix build breakage
2010-08-24 00:21:45 -07:00
Linus Torvalds
472e449c10 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  68328serial: check return value of copy_*_user() instead of access_ok()
  synclink: add mutex_unlock() on error path
  rocket: add a mutex_unlock()
  ip2: return -EFAULT on copy_to_user errors
  ip2: remove unneeded NULL check
  serial: print early console device address in hex
2010-08-24 00:21:27 -07:00
Linus Torvalds
6d87f207c0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  kobject_uevent: fix typo in comments
  firmware_class: fix typo in error path
  kobject: Break the kobject namespace defs into their own header
2010-08-24 00:21:02 -07:00
Linus Torvalds
d20de76354 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (29 commits)
  ARM: imx: fix build failure concerning otg/ulpi
  USB: ftdi_sio: add product ID for Lenz LI-USB
  USB: adutux: fix misuse of return value of copy_to_user()
  USB: iowarrior: fix misuse of return value of copy_to_user()
  USB: xHCI: update ring dequeue pointer when process missed tds
  USB: xhci: Remove buggy assignment in next_trb()
  USB: ftdi_sio: Add ID for Ionics PlugComputer
  USB: serial: io_ti.c: don't return 0 if writing the download record failed
  USB: otg: twl4030: fix wrong assumption of starting state
  USB: gadget: Return -ENOMEM on memory allocation failure
  USB: gadget: fix composite kernel-doc warnings
  USB: ssu100: set tty_flags in ssu100_process_packet
  USB: ssu100: add disconnect function for ssu100
  USB: serial: export symbol usb_serial_generic_disconnect
  USB: ssu100: rework logic for TIOCMIWAIT
  USB: ssu100: add register parameter to ssu100_setregister
  USB: ssu100: remove duplicate #defines in ssu100
  USB: ssu100: refine process_packet in ssu100
  USB: ssu100: add locking for port private data in ssu100
  USB: r8a66597-udc: return -ENOMEM if kzalloc() fails
  ...
2010-08-24 00:20:44 -07:00
David S. Miller
25edd6946a sparc64: Get rid of indirect p1275 PROM call buffer.
This is based upon a report by Meelis Roos showing that it's possible
that we'll try to fetch a property that is 32K in size with some
devices.  With the current fixed 3K buffer we use for moving data in
and out of the firmware during PROM calls, that simply won't work.

In fact, it will scramble random kernel data during bootup.

The reasoning behind the temporary buffer is entirely historical.  It
used to be the case that we had problems referencing dynamic kernel
memory (including the stack) early in the boot process before we
explicitly told the firwmare to switch us over to the kernel trap
table.

So what we did was always give the firmware buffers that were locked
into the main kernel image.

But we no longer have problems like that, so get rid of all of this
indirect bounce buffering.

Besides fixing Meelis's bug, this also makes the kernel data about 3K
smaller.

It was also discovered during these conversions that the
implementation of prom_retain() was completely wrong, so that was
fixed here as well.  Currently that interface is not in use.

Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-23 23:10:57 -07:00
Andreas Schwab
314b389b17 powerpc: Fix config dependency problem with MPIC_U3_HT_IRQS
MPIC_U3_HT_IRQS is selected both by PPC_PMAC64 and PPC_MAPLE, but depends
on PPC_MAPLE, so a PPC_PMAC64-only config gets this warning:

warning: (PPC_PMAC64 && PPC_PMAC && POWER4 || PPC_MAPLE && PPC64 && PPC_BOOK3S) selects MPIC_U3_HT_IRQS which has unmet direct dependencies (PPC_MAPLE)

Fix that by removing the dependency on PPC_MAPLE.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:28:29 +10:00
Andreas Schwab
4cc4587fb1 via-pmu: Add compat_pmu_ioctl
The ioctls are actually compatible, but due to historical mistake the
numbers differ between 32bit and 64bit.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:28:28 +10:00
Andreas Schwab
bcc30d3758 powerpc: Wire up fanotify_init, fanotify_mark, prlimit64 syscalls
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:28:28 +10:00
Grant Likely
76ec01dbb7 powerpc/pci: Fix checking for child bridges in PCI code.
pci_device_to_OF_node() can return null, and list_for_each_entry will
never enter the loop when dev is NULL, so it looks like this test is
a typo.

Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:28:27 +10:00
Anatolij Gustschin
c686ecf504 powerpc: Fix typo in uImage target
Commit e32e78c5ee
(powerpc: fix build with make 3.82) introduced a
typo in uImage target and broke building uImage:

make: *** No rule to make target `uImage'.  Stop.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:32 +10:00
Matt Evans
f761622e59 powerpc: Initialise paca->kstack before early_setup_secondary
As early setup calls down to slb_initialize(), we must have kstack
initialised before checking "should we add a bolted SLB entry for our kstack?"

Failing to do so means stack access requires an SLB miss exception to refill
an entry dynamically, if the stack isn't accessible via SLB(0) (kernel text
& static data).  It's not always allowable to take such a miss, and
intermittent crashes will result.

Primary CPUs don't have this issue; an SLB entry is not bolted for their
stack anyway (as that lives within SLB(0)).  This patch therefore only
affects the init of secondaries.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:31 +10:00
Anton Blanchard
7aa241fdce powerpc: Fix bogus it_blocksize in VIO iommu code
When looking at some issues with the virtual ethernet driver I noticed
that TCE allocation was following a very strange pattern:

address 00e9000 length 2048
address 0409000 length 2048 <-----
address 0429000 length 2048
address 0449000 length 2048
address 0469000 length 2048
address 0489000 length 2048
address 04a9000 length 2048
address 04c9000 length 2048
address 04e9000 length 2048
address 4009000 length 2048 <-----
address 4029000 length 2048

Huge unexplained gaps in what should be an empty TCE table. It turns out
it_blocksize, the amount we want to align the next allocation to, was
c0000000fe903b20. Completely bogus.

Initialise it to something reasonable in the VIO IOMMU code, and use kzalloc
everywhere to protect against this when we next add a non compulsary
field to iommu code and forget to initialise it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:31 +10:00
Anton Blanchard
4138d65333 powerpc: Inline ppc64_runlatch_off
I'm sick of seeing ppc64_runlatch_off in our profiles, so inline it
into the callers. To avoid a mess of circular includes I didn't add
it as an inline function.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:30 +10:00
Nathan Fontenot
954e6da54b powerpc: Correct smt_enabled=X boot option for > 2 threads per core
The 'smt_enabled=X' boot option does not handle values of X > 2.
For Power 7 processors with smt modes of 0,1,2,3, and 4 this does
not work.  This patch allows the smt_enabled option to be set to
any value limited to a max equal to the number of threads per
core.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:30 +10:00
Signed-off-by: Darren Hart
1afb56cf97 powerpc: Silence xics_migrate_irqs_away() during cpu offline
All IRQs are migrated away from a CPU that is being offlined so the
following messages suggest a problem when the system is behaving as
designed:

IRQ 262 affinity broken off cpu 1
IRQ 17 affinity broken off cpu 0
IRQ 18 affinity broken off cpu 0
IRQ 19 affinity broken off cpu 0
IRQ 256 affinity broken off cpu 0
IRQ 261 affinity broken off cpu 0
IRQ 262 affinity broken off cpu 0

Don't print these messages when the CPU is not online.

Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
Acked-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nathan Fontenot <nfont@austin.ibm.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:30 +10:00
Signed-off-by: Darren Hart
6685a47749 powerpc: Silence __cpu_up() under normal operation
During CPU offline/online tests __cpu_up would flood the logs with
the following message:

Processor 0 found.

This provides no useful information to the user as there is no context
provided, and since the operation was a success (to this point) it is expected
that the CPU will come back online, providing all the feedback necessary.

Change the "Processor found" message to DBG() similar to other such messages in
the same function. Also, add an appropriate log level for the "Processor is
stuck" message.

Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
Acked-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nathan Fontenot <nfont@austin.ibm.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:29 +10:00
Signed-off-by: Darren Hart
a7c2bb8279 powerpc: Re-enable preemption before cpu_die()
start_secondary() is called shortly after _start and also via

cpu_idle()->cpu_die()->pseries_mach_cpu_die()

start_secondary() expects a preempt_count() of 0. pseries_mach_cpu_die() is
called via the cpu_idle() routine with preemption disabled, resulting in the
following repeating message during rapid cpu offline/online tests
with CONFIG_PREEMPT=y:

BUG: scheduling while atomic: swapper/0/0x00000002
Modules linked in: autofs4 binfmt_misc dm_mirror dm_region_hash dm_log [last unloaded: scsi_wait_scan]
Call Trace:
[c00000010e7079c0] [c0000000000133ec] .show_stack+0xd8/0x218 (unreliable)
[c00000010e707aa0] [c0000000006a47f0] .dump_stack+0x28/0x3c
[c00000010e707b20] [c00000000006e7a4] .__schedule_bug+0x7c/0x9c
[c00000010e707bb0] [c000000000699d9c] .schedule+0x104/0x800
[c00000010e707cd0] [c000000000015b24] .cpu_idle+0x1c4/0x1d8
[c00000010e707d70] [c0000000006aa1b4] .start_secondary+0x398/0x3d4
[c00000010e707e30] [c000000000008278] .start_secondary_resume+0x10/0x14

Move the cpu_die() call inside the existing preemption enabled block of
cpu_idle(). This is safe as the idle task is affined to a single CPU so the
debug_smp_processor_id() tests (from cpu_should_die()) won't trigger as we are
in a "migration disabled" region.

Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
Acked-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nathan Fontenot <nfont@austin.ibm.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:29 +10:00
Julia Lawall
da9bef6735 powerpc/pci: Drop unnecessary null test
list_for_each_entry binds its first argument to a non-null value, and thus
any null test on the value of that argument is superfluous.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
iterator I;
expression x,E,E1,E2;
statement S,S1,S2;
@@

I(x,...) { <...
- if (x != NULL || ...)
  S
  ...> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:28 +10:00
Julia Lawall
5fba610ec9 powerpc/powermac: Drop unnecessary null test
for_each_node_by_name binds its first argument to a non-null value, and
thus any null test on the value of that argument is superfluous.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
iterator I;
expression x,E;
@@

I(x,...) { <...
(
- (x != NULL) &&
  E
  ...> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:28 +10:00
Julia Lawall
d1efa2a755 powerpc/powermac: Drop unnecessary of_node_put
for_each_node_by_name only exits when its first argument is NULL, and a
subsequent call to of_node_put on that argument is unnecessary.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
iterator name for_each_node_by_name;
expression np,E;
identifier l;
@@

for_each_node_by_name(np,...) {
  ... when != break;
      when != goto l;
}
... when != np = E
- of_node_put(np);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:28 +10:00
Anton Blanchard
249ec22875 powerpc/kdump: Stop all other CPUs before running crash handlers
During kdump we run the crash handlers first then stop all other CPUs.
We really want to stop all CPUs as close to the fail as possible and also
have a very controlled environment for running the crash handlers, so it
makes sense to reverse the order.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:27 +10:00
Anton Blanchard
3469270807 powerpc/mm: Fix vsid_scrample typo
The code is wrapped in an #if 0, but it's wrong so we may as well fix it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:27 +10:00
Denis Kirjanov
9904b00593 powerpc: Use is_32bit_task() helper to test 32 bit binary
Use is_32bit_task() helper to test 32 bit binary.

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:27 +10:00
Sonny Rao
79c3095fb3 powerpc: Export memstart_addr and kernstart_addr on ppc64
Some modules (like eHCA) want to map all of kernel memory, for this to
work with a relocated kernel, we need to export kernstart_addr so
modules can use PHYSICAL_START and memstart_addr so they could use
MEMORY_START.  Note that the 32bit code already exports these symbols.

Signed-off-By: Sonny Rao <sonnyrao@us.ibm.com>

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 15:26:26 +10:00
Benjamin Herrenschmidt
529b7307d8 powerpc: Make rwsem use "long" type
This makes the 64-bit kernel use 64-bit signed integers for the counter
(effectively supporting 32-bit of active count in the semaphore), thus
avoiding things like overflow of the mmap_sem if you use a really crazy
number of threads

Note: Ideally the type in the structure should be atomic_long_t rather
than "long". However, there's some nasty issues with that. It needs to
be initialized statically -and- lib/rwsem.c does things like

        sem->count = RWSEM_UNLOCKED_VALUE;

Now, if you mix in the fact that atomic_* types are actually structures
with one member and note typedefs of a scalar, it makes its really nasty.

So I stuck to what we did before using a long and casts for now.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-24 14:41:48 +10:00
Benjamin Herrenschmidt
b1515af291 Merge remote branch 'jwb/merge' into merge 2010-08-24 14:36:45 +10:00
Uwe Kleine-König
70ddd47f7d ARM: imx: fix build failure concerning otg/ulpi
The build failure was introduced by

	13dd0c9 (USB: otg/ulpi: extend the generic ulpi driver.)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Cc: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:17 -07:00
Galen Seitz
ea233f8055 USB: ftdi_sio: add product ID for Lenz LI-USB
Add ftdi product ID for Lenz LI-USB, a model train interface.  This
was NOT tested against 2.6.35, but a similar patch was tested with the
CentOS 2.6.18-194.11.1.el5 kernel.  It wasn't clear to me what
ordering is being used in ftdi_sio.c, so I inserted the ID after another
model train entry(SPROG_II).

Signed-off-by: Galen Seitz <galens@seitzassoc.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:17 -07:00
Kulikov Vasiliy
1865a9c382 USB: adutux: fix misuse of return value of copy_to_user()
copy_to_user() returns number of not copied bytes, not error code.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:17 -07:00
Kulikov Vasiliy
6d4d455486 USB: iowarrior: fix misuse of return value of copy_to_user()
copy_to_user() returns number of not copied bytes, not error code.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00
Andiry Xu
14184f9b80 USB: xHCI: update ring dequeue pointer when process missed tds
This patch fixes a isoc transfer bug reported by Sander Eikelenboom.
When ep->skip is set, endpoint ring dequeue pointer should be updated
when processed every missed td. Although ring dequeue pointer will also
be updated when ep->skip is clear, leave it intact during missed tds
processing may cause two issues:

1). If the very next valid transfer following missed tds is a short
transfer, its actual_length will be miscalculated;
2). If there are too many missed tds during transfer, new inserted tds
may found the transfer ring full and urb enqueue fails.

Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00
John Youn
a1669b2c64 USB: xhci: Remove buggy assignment in next_trb()
The code to increment the TRB pointer has a slight ambiguity that could
lead to a bug on different compilers.  The ANSI C specification does not
specify the precedence of the assignment operator over the postfix
operator.  gcc 4.4 produced the correct code (increment the pointer and
assign the value), but a MIPS compiler that one of John's clients used
assigned the old (unincremented) value.

Remove the unnecessary assignment to make all compilers produce the
correct assembly.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00
Martin Michlmayr
666cc076d2 USB: ftdi_sio: Add ID for Ionics PlugComputer
Add the ID for the Ionics PlugComputer (<http://ionicsplug.com/>).

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00
Roel Kluin
fd6e5bbb24 USB: serial: io_ti.c: don't return 0 if writing the download record failed
If the write download record failed we shouldn't return 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00
Felipe Balbi
461c317705 USB: otg: twl4030: fix wrong assumption of starting state
The reset state of twl4030-usb is not sleeping, it starts
up awaken and we need to disable it if we have booted
with a disconnected cable to avoid over consumption on
the default state.

To avoid problems later, we read the current state of the
transceiver from the PHY_PWR_CTRL register. The bootloader
can, anyways, put the device to sleep before us.

Tested on a custom OMAP board.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00
Julia Lawall
7c81aafaf0 USB: gadget: Return -ENOMEM on memory allocation failure
In this code, 0 is returned on memory allocation failure, even though other
failures return -ENOMEM or other similar values.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression ret;
expression x,e1,e2,e3;
@@

ret = 0
... when != ret = e1
*x = \(kmalloc\|kcalloc\|kzalloc\)(...)
... when != ret = e2
if (x == NULL) { ... when != ret = e3
  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-23 20:50:16 -07:00