Commit Graph

173058 Commits

Author SHA1 Message Date
David Daney
4ef5651e85 MIPS: Convert BUG() to use unreachable()
Use the new unreachable() macro instead of while(1);

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
CC: linux-mips@linux-mips.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05 09:10:12 -08:00
David Daney
a5fc5eba4d x86: Convert BUG() to use unreachable()
Use the new unreachable() macro instead of for(;;);.  When
allyesconfig is built with a GCC-4.5 snapshot on i686 the size of the
text segment is reduced by 3987 bytes (from 6827019 to 6823032).

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Ingo Molnar <mingo@redhat.com>
CC: x86@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05 09:10:12 -08:00
David Daney
38938c879e Add support for GCC-4.5's __builtin_unreachable() to compiler.h (v2)
Starting with version 4.5, GCC has a new built-in function
__builtin_unreachable() that can be used in places like the kernel's
BUG() where inline assembly is used to transfer control flow.  This
eliminated the need for an endless loop in these places.

The patch adds a new macro 'unreachable()' that will expand to either
__builtin_unreachable() or an endless loop depending on the compiler
version.

Change from v1: Simplify unreachable() for non-GCC 4.5 case.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05 09:10:12 -08:00
Russell King
0719dc3413 Merge branch 'devel-stable' into devel 2009-12-05 10:35:33 +00:00
Russell King
e28edb723e Merge branches 'at91', 'ep93xx', 'etm', 'ks8695', 'nuc', 'u300' and 'u8500' into devel 2009-12-05 10:35:18 +00:00
Johannes Berg
d29cecda03 mac80211: fix reorder buffer release
My patch "mac80211: correctly place aMPDU RX reorder code"
uses an skb queue for MPDUs that were released from the
buffer. I intentially didn't initialise and use the skb
queue's spinlock, but in this place forgot that the code
variant that doesn't touch the spinlock is needed.

Thanks to Christian Lamparter for quickly spotting the
bug in the backtrace Reinette reported.

Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Bug-identified-by: Christian Lamparter <chunkeey@googlemail.com>
Tested-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04 14:25:43 -08:00
David S. Miller
8f56874bd7 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-12-04 13:25:15 -08:00
Andreas Schwab
f195e2bff3 m68k: ptrace fixes
This fixes the following issues in ptrace:

- when single stepping into the signal handler stop at the first insn of
  the handler
- handle non-zero stkadj when accessing pc and sr in ptregs
- correctly handle PT_SR in PTRACE_POKEUSR
- report -EIO when trying to read unknown offset in PTRACE_PEEKUSR

Additionally, the handling of the special case that PT_SR accesses a 16
bit word instead of a 32 bit word has been moved into get_reg/put_reg.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2009-12-04 21:22:35 +01:00
Andreas Schwab
faa47b4669 m68k: use generic code for ptrace requests
Remove all but PTRACE_{PEEK,POKE}USR and PTRACE_{GET,SET}{REGS,FPREGS}
from arch_ptrace and let the rest be handled by generic code.  Define
PTRACE_SINGLEBLOCK to enable singleblock tracing.
[Geert] Not yet applicable for m68knommu

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2009-12-04 21:22:35 +01:00
Geert Uytterhoeven
4f672ce298 rtc: Add an RTC driver for the Ricoh RP5C01
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
2009-12-04 21:22:35 +01:00
Geert Uytterhoeven
4f9b9bba1d rtc: Add an RTC driver for the Oki MSM6242
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
2009-12-04 21:22:34 +01:00
Samuel Ortiz
159bcfeb91 iwmc3200wifi: Enable wimax core through module parameter
When debugging the wifi firmware, we need to disable the wimax core to gain
some memory space. The default value will keep the wimax core enabled.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:29 -05:00
Samuel Ortiz
43b5ffe116 iwmc3200wifi: Add wifi-wimax coexistence mode as a module parameter
Wifi and wimax coexistence mode is set by wifi at boot time. There can be
several modes, defined by priority tables. User space components can decide
which one to select by writing to /sys/module/iwmc3200wifi/parameters/wiwi
with this patch, before bringing the interface up.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:28 -05:00
Samuel Ortiz
1ee9d426ff iwmc3200wifi: Coex table command does not expect a response
When sending the wiwi coexistence priority table, we should not tell the LMAC
that we want a response.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:27 -05:00
Samuel Ortiz
f330d4f9df iwmc3200wifi: Update wiwi priority table
This update follows the firmware engineers recommendations.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:27 -05:00
Reinette Chatre
250cce26d5 iwlwifi: driver version track kernel version
The driver version number is a remnant from when there was an out-of-tree
iwlwifi driver. Now that the driver forms part of kernel source we do not
need a separate driver version. Instead, we now use the kernel version as
driver version. We maintain the previous tags used to indicate which
components the driver has been compiled with.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:26 -05:00
Wey-Yi Guy
212fb57519 iwlwifi: indicate uCode type when fail dump error/event log
error_event_table_ptr is only set upon receipt of REPLY_ALIVE. Until
then both event log and error log will fail. Add information to indicate
which uCode encounter the failure case.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:26 -05:00
Wey-Yi Guy
bd3709b546 iwl3945: remove duplicated event logging code
In the process of improving uCode event logging capability, the new
implementation was introduced without removing the existing
implementation. The event log will be dumped to dmesg twice.
Remove the old implementation to only log the event once upon sys
assert or request by user.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:25 -05:00
Johannes Berg
df98a49670 b43: fix two warnings
My gcc appears to be able to see past the function
boundary and notices that the variable 'behaviour'
could be used uninitialised:

drivers/net/wireless/b43/leds.c: In function ‘b43_leds_register’:
drivers/net/wireless/b43/leds.c:339: warning: ‘behaviour’ may be used uninitialized in this function
drivers/net/wireless/b43/leds.c: In function ‘b43_leds_init’:
drivers/net/wireless/b43/leds.c:262: warning: ‘behaviour’ may be used uninitialized in this function

because b43_led_get_sprominfo() didn't initialise
it in all cases.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:25 -05:00
Zhu Yi
52ce3e9a7d ipw2100: fix rebooting hang with driver loaded
Add PCI .shutdown method so that we can disable the device during
shutdown or reboot. Without this, the reboot doesn't work well on
some platforms.

This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2124

Tested-by: pablo <pablolm2005@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:25 -05:00
Kalle Valo
269ac5fd2d cfg80211: indent regulatory messages with spaces
The regulatory messages in syslog look weird:

kernel: cfg80211: Regulatory domain: US
kernel: ^I(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
kernel: ^I(2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2700 mBm)
kernel: ^I(5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
kernel: ^I(5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
kernel: ^I(5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
kernel: ^I(5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
kernel: ^I(5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 3000 mBm)

Indent them with four spaces instead of the tab character to get prettier
output.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Acked: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:24 -05:00
Zhu Yi
6646a664e3 iwmc3200wifi: fix NULL pointer dereference in pmkid update
When handling IWM_CMD_PMKID_FLUSH command, the bssid and
pmkid in pmksa are all NULL. Check it before memcpy.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:24 -05:00
Jouni Malinen
914828fad0 mac80211: Fix TX status reporting for injected data frames
An earlier optimization on removing unnecessary traffic on cooked
monitor interfaces ("mac80211: reduce the amount of unnecessary traffic
on cooked monitor interfaces ") ended up removing quite a bit more
than just unnecessary traffic. It was not supposed to remove TX status
reporting for injected frames, but ended up doing it by checking the
injected flag in skb->cb only after that field had been cleared with
memset.. Fix this by taking a local copy of the injected flag before
skb->cb is cleared.

This broke user space applications that depend on getting TX status
notifications for injected data frames. For example, STA inactivity
poll from hostapd did not work and ended up kicking out stations even
if they were still present.

Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:23 -05:00
Gabor Juhos
a9a29ce674 ath9k: enable 2GHz band only if the device supports it
Currently, the 2GHz band is enabled unconditionally, even if the device
does not support it.

Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:23 -05:00
Michael Buesch
1f351e3840 airo: Fix integer overflow warning
On BigEndian gcc complains:

drivers/net/wireless/airo.c: In function ‘sniffing_mode’:
drivers/net/wireless/airo.c:4809: warning: integer overflow in expression

Fix this by doing the bitwise AND on the host-endian value.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 13:30:40 -05:00
Gertjan van Wingerde
a5186e9975 rt2x00: Fix padding bug on L2PAD devices.
While reviewing the l2pad function to align both the header and the payload
on a DMA-capable boundary a bug was discovered where the payload would not
be properly aligned. The header_align value was used where the payload_align
value should have been used.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 13:30:39 -05:00
Jean Tourrilhes
1014eb6ec9 WE: Fix set events not propagated
I've just noticed that some events are no longer propagated
for some wireless drivers. Basically, SET request with a extra payload
for driver without commit handler. The fix is pretty simple, see
attached.
	Actually, a few lines below this line, you will see that the
event generation for simple SET (iwpoint-less ?) is done properly,
and this other event generation does not need fixing.

Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 13:30:39 -05:00
Larry Finger
316a4d966c b43legacy: avoid PPC fault during resume
For PPC architecture with PHY Revision < 3, a read of the register
B43_MMIO_HWENABLED_LO will cause a CPU fault unless b43legacy_status()
returns a value of 2 (B43legacy_STAT_STARTED); however, one finds that
the driver is unable to associate after resuming from hibernation unless
this routine returns 1. To satisfy both conditions, the routine is rewritten
to return TRUE whenever b43legacy_status() returns a value < 2.

This patch fixes the second problem listed in the postings for Red Hat
Bugzilla #538523.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 13:28:50 -05:00
Larry Finger
c2ff581aca b43: avoid PPC fault during resume
The routine b43_is_hw_radio_enabled() has long been a problem.
For PPC architecture with PHY Revision < 3, a read of the register
B43_MMIO_HWENABLED_LO will cause a CPU fault unless b43_status()
returns a value of 2 (B43_STAT_STARTED) (BUG 14181). Fixing that
results in Bug 14538 in which the driver is unable to reassociate
after resuming from hibernation because b43_status() returns 0.

The correct fix would be to determine why the status is 0; however,
I have not yet found why that happens. The correct value is found for
my device, which has PHY revision >= 3.

Returning TRUE when the PHY revision < 3 and b43_status() returns 0 fixes
the regression for 2.6.32.

This patch fixes the problem in Red Hat Bugzilla #538523.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Christian Casteyde <casteyde.christian@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 13:28:49 -05:00
Russell King
677f4f64e4 Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel-stable 2009-12-04 17:34:50 +00:00
Russell King
4567c4a896 Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel-stable 2009-12-04 17:34:16 +00:00
Russell King
602fd7c367 Merge branch 'for-rmk' of git://git.fluff.org/bjdooks/linux into devel-stable
Conflicts:
	arch/arm/Kconfig
2009-12-04 17:33:54 +00:00
Vivek Goyal
846954b0a3 blkio: Allow CFQ group IO scheduling even when CFQ is a module
o Now issues of blkio controller and CFQ in module mode should be fixed.
  Enable the cfq group scheduling support in module mode.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-04 16:38:14 +01:00
Vivek Goyal
3e25206689 blkio: Implement dynamic io controlling policy registration
o One of the goals of block IO controller is that it should be able to
  support mulitple io control policies, some of which be operational at
  higher level in storage hierarchy.

o To begin with, we had one io controlling policy implemented by CFQ, and
  I hard coded the CFQ functions called by blkio. This created issues when
  CFQ is compiled as module.

o This patch implements a basic dynamic io controlling policy registration
  functionality in blkio. This is similar to elevator functionality where
  ioschedulers register the functions dynamically.

o Now in future, when more IO controlling policies are implemented, these
  can dynakically register with block IO controller.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-04 16:38:14 +01:00
Vivek Goyal
9d6a986c0b blkio: Export some symbols from blkio as its user CFQ can be a module
o blkio controller is inside the kernel and cfq makes use of interfaces
  exported by blkio. CFQ can be a module too, hence export symbols used
  by CFQ.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-04 16:38:14 +01:00
Louis Rilling
b69f229206 block: Fix io_context leak after failure of clone with CLONE_IO
With CLONE_IO, parent's io_context->nr_tasks is incremented, but never
decremented whenever copy_process() fails afterwards, which prevents
exit_io_context() from calling IO schedulers exit functions.

Give a task_struct to exit_io_context(), and call exit_io_context() instead of
put_io_context() in copy_process() cleanup path.

Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-04 16:36:18 +01:00
Louis Rilling
61cc74fbb8 block: Fix io_context leak after clone with CLONE_IO
With CLONE_IO, copy_io() increments both ioc->refcount and ioc->nr_tasks.
However exit_io_context() only decrements ioc->refcount if ioc->nr_tasks
reaches 0.

Always call put_io_context() in exit_io_context().

Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-04 16:36:18 +01:00
Takashi Iwai
86e1d57e4f Merge branch 'topic/hda' into for-linus 2009-12-04 16:22:45 +01:00
Takashi Iwai
baf9226667 Merge branch 'topic/asoc' into for-linus 2009-12-04 16:22:41 +01:00
Takashi Iwai
57648cd52b Merge branch 'topic/misc' into for-linus 2009-12-04 16:22:37 +01:00
Takashi Iwai
7959832483 Merge branch 'topic/core-change' into for-linus 2009-12-04 16:22:32 +01:00
Russell King
2fc42814d8 Merge branch 'pending-dma-streaming' (early part) into devel 2009-12-04 15:00:11 +00:00
Russell King
c6baa1963c Merge branch 'pending-dma-coherent' into devel 2009-12-04 15:00:00 +00:00
Russell King
5cb2faa6ed Merge branch 'pending-misc' (early part) into devel 2009-12-04 14:59:47 +00:00
Russell King
6060e8df51 ARM: I-cache: flush executable mappings in flush_cache_range()
Dirk Behme reported instability on ARM11 SMP (VIPT non-aliasing cache)
caused by the dynamic linker changing protection on text pages to write
GOT entries.  The problem is due to an interaction between the write
faulting code providing new anonymous pages which are incoherent with
the I-cache due to write buffering, and the I-cache not having been
invalidated.

a4db94d plugs the hole with the data cache coherency.  This patch
provides the other half of the fix by flushing the I-cache in
flush_cache_range() for VM_EXEC VMAs (which is what we have when the
region is being made executable again.)  This ensures that the I-cache
will be up to date with the newly COW'd pages.

Note: if users are writing instructions, then they still need to use
the ARM sys_cacheflush API to ensure that the caches are correctly
synchronized.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-04 14:58:51 +00:00
Russell King
ea201dbb78 ARM: I-cache: avoid flushing in flush_cache_mm()
flush_cache_mm() is called in two cases:
1. when a process exits, just before the page tables are torn down.
   We can allow the stale lines to evict themselves over time without
   causing any harm.

2. when a process forks, and we've allocated a new ASID.
   The instruction cache issues are dealt with as pages are brought
   into the new process address space.  Flushing the I-cache here is
   therefore unnecessary.

However, we must keep the VIPT aliasing D-cache flush to ensure that
any dirty cache lines are not written back after the pages have been
reallocated for some other use - which would result in corruption.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-04 14:58:51 +00:00
Russell King
9e95922b10 ARM: I-cache: Add invalidation for VIVT ASID tagged caches
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-04 14:58:51 +00:00
Catalin Marinas
115b22474e ARM: 5794/1: Flush the D-cache during copy_user_highpage()
The I and D caches for copy-on-write pages on processors with
write-allocate caches become incoherent causing problems on application
relying on CoW for text pages (dynamic linker relocating symbols in a
text page). This patch flushes the D-cache for such pages.

Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-04 14:58:50 +00:00
Russell King
f91fb05d82 ARM: Remove __flush_icache_all() from __flush_dcache_page()
Both call sites for __flush_dcache_page() end up calling
__flush_icache_all() themselves, so having __flush_dcache_page() do
this as well is wasteful.  Remove the duplicated icache flushing.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-04 14:58:50 +00:00
Russell King
2df341edf6 ARM: Move __flush_icache_all() out of flush_pfn_alias()
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-04 14:58:50 +00:00