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on return from ioctl calls
Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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A crash upon booting that is caused by bcm43xx has been reported [1] and
found to be due to a work queue being reinitialized while work on that
queue is still pending. This fix modifies the shutdown of work queues and
prevents periodic work from being requeued during shutdown. With this patch,
no more crashes on reboot were observed by the original reporter. I do not
get that particular failure on my system; however, when running a large
number of ifdown/ifup sequences, my system would kernel panic with the
'caps lock' light blinking at roughly a 1 Hz rate. In addition, there were
infrequent failures in the firmware that resulted in 'IRQ READY TIMEOUT'
errors. With this patch, no more of the first type of failure occur, and
incidence of the second type is greatly reduced.
[1] http://bugzilla.kernel.org/show_bug.cgi?id=8937
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata clear horkage on ata_dev_init()
[libata, IDE] add new VIA bridge to VIA PATA drivers
pata_it821x: fix lost interrupt with atapi devices
Fix broken pata_via cable detection
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dev->horkage should be cleared over device hotunplug/plug. Clear it
in ata_dev_init().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Signed-off-by: Joseph Chan <josephchan@via.com.tw>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The earlier crash dump fix on x86_64 depended on patches in -mm which
are intended for post-2.6.23. Without those, it broke the build when
it went into 2.6.23-rc5.
This changes the field references in ELF_CORE_COPY_REGS back to those
still used in mainline.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In the case when an nmi gets stucks the endflag stays equal to zero.
This causes the busy looping on other cpus to continue, even though the
nmi test is done.
On my machine with out the change below the system would hang right
after check_nmi_watchdog(). The change below just sets endflag prior to
checking if the test was successful or not.
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The CLFLUSH for the modified code line in text_poke was supposed
to speed up CPU recovery. Unfortunately it seems to cause hangs
on some VIA C3s (at least on VIA Esther Model 10 Stepping 9)
Remove it.
Thanks to Stefan Becker for reporting/testing.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix the NMI watchdog on Intel CoreDuo processor where the kernel would
get stuck during boot. The issue is related to errata AE49, where the
PERFEVTSEL1 counter does not have a working enable bit. Thus it is not
possible to use it for NMI.
The patch creates a dedicated wd_ops for CoreDuo which falls back to
using PERFEVTSEL0. The other Intel processors supporting the
architectural PMU will keep on using PERFEVTSEL1 as this allows other
subsystems, such as perfmon, to use PERFEVTSEL0 for PEBS monitoring in
particular. Bug initially reported by Daniel Walker.
AK: Added comments
Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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fsid_source decided where to get the 'fsid' number to
return for a GETATTR based on the type of filehandle.
It can be from the device, from the fsid, or from the
UUID.
It is possible for the filehandle to be inconsistent
with the export information, so make sure the export information
actually has the info implied by the value returned by
fsid_source.
Signed-off-by: Neil Brown <neilb@suse.de>
Cc: "Luiz Fernando N. Capitulino" <lcapitulino@gmail.com>
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Recent changes in NFSd cause a directory which is mounted-on
to not appear properly when the filesystem containing it is exported.
*exp_get* now returns -ENOENT rather than NULL and when
commit 5d3dbbeaf56d0365ac6b5c0a0da0bd31cc4781e1
removed the NULL checks, it didn't add a check for -ENOENT.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When PTRACE_SYSCALL was used and then PTRACE_DETACH is used, the
TIF_SYSCALL_TRACE flag is left set on the formerly-traced task. This
means that when a new tracer comes along and does PTRACE_ATTACH, it's
possible he gets a syscall tracing stop even though he's never used
PTRACE_SYSCALL. This happens if the task was in the middle of a system
call when the second PTRACE_ATTACH was done. The symptom is an
unexpected SIGTRAP when the tracer thinks that only SIGSTOP should have
been provoked by his ptrace calls so far.
A few machines already fixed this in ptrace_disable (i386, ia64, m68k).
But all other machines do not, and still have this bug. On x86_64, this
constitutes a regression in IA32 compatibility support.
Since all machines now use TIF_SYSCALL_TRACE for this, I put the
clearing of TIF_SYSCALL_TRACE in the generic ptrace_detach code rather
than adding it to every other machine's ptrace_disable.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix "lost" interrupt problem when using dma with CD/DVD drives in some
configurations. This problem can make installing linux from media
impossible for distro's that have switched to libata-only configurations.
The simple fix is to eliminate the use of dma for reading drive status, etc,
by checking the number of bytes to transferred.
This change will only affect the behavior of atapi devices, not disks.
There is more info at http://bugzilla.redhat.com/show_bug.cgi?id=242229
This patch is for 2.6.22.1
Signed-off-by: Jeff Norden <jnorden@math.tntech.edu>
Reviewed-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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via_do_set_mode overwrites 80-wire cable detection bits. Let's
preserve them.
Signed-off-by: Laurent Riffard <laurent.riffard@free.fr>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Ocelot: remove remaining bits
[MIPS] TLB: Fix instruction bitmasks
[MIPS] R10000: Fix wrong test in dma-default.c
[MIPS] Provide empty irq_enable_hazard definition for legacy and R1 cores.
[MIPS] Sibyte: Remove broken dependency on EXPERIMENTAL from SIBYTE_SB1xxx_SOC.
[MIPS] Kconfig: whitespace cleanup.
[MIPS] PCI: Set need_domain_info if controller domain index is non-zero.
[MIPS] BCM1480: Fix computation of interrupt mask address register.
[MIPS] i8259: Add disable method.
[MIPS] tty: add the new ioctls and definitions.
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* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
i2c-algo-bit: Read block data bugfix
i2c-pxa: Fix adapter number
i2c-gpio: Fix adapter number
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* 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6:
hwmon: End of I/O region off-by-one
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* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
[CRYPTO] blkcipher: Fix inverted test in blkcipher_get_spot
[CRYPTO] blkcipher: Fix handling of kmalloc page straddling
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: fw-ohci: ignore failure of pci_set_power_state (fix suspend regression)
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* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev:
m32r: Rename STI/CLI macros
m32r: build fix of entry.S
m32r: Separate syscall table from entry.S
m32r: Cosmetic updates of arch/m32r/kernel/entry.S
m32r: Exit ei_handler directly for no IRQ case or IPI operations
m32r: Simplify ei_handler code
m32r: Define symbols to unify platform-dependent ICU checks
m32r: Move dot.gdbinit files
m32r: Rearrange platform-dependent codes
m32r: Add defconfig file for the usrv platform.
m32r: Update defconfig files for 2.6.23-rc1
m32r: Move defconfig files to arch/m32r/configs/
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* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
sched: fix ideal_runtime calculations for reniced tasks
sched: improve prev_sum_exec_runtime setting
sched: simplify __check_preempt_curr_fair()
sched: fix xtensa build warning
sched: debug: fix sum_exec_runtime clearing
sched: debug: fix cfs_rq->wait_runtime accounting
sched: fix niced_granularity() shift
sched: fix MC/HT scheduler optimization, without breaking the FUZZ logic.
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* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6:
[XFS] fix nasty quota hashtable allocation bug
[XFS] fix sparse shadowed variable warnings
[XFS] fix ASSERT and ASSERT_ALWAYS
[XFS] Fix sparse warning in kmem_shake_allow
[XFS] Fix sparse NULL vs 0 warnings
[XFS] Set filestreams object timeout to something sane.
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git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
[x86 setup] Work around bug in Xen HVM
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Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-Off-By: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Following a strict interpretation the empty definition of irq_enable_hazard
has always been a bug - but an intentional one because it didn't bite.
This has now changed, for uniprocessor kernels mm/slab.c:do_drain()
[...]
on_each_cpu(do_drain, cachep, 1, 1);
check_irq_on();
[...]
may be compiled into a mtc0 c0_status; mfc0 c0_status sequence resulting
in a back-to-back hazard.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Otherwise Kconfig will produce a nonsenical .config for a kernel that is
neither 32-bit nor 64-bit.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This fixes this little funny:
bigsur:/proc/bus/pci# ls -l
total 0
dr-xr-xr-x 2 root root 0 Aug 28 19:31 00
dr-xr-xr-x 2 root root 0 Aug 28 19:31 00
dr-xr-xr-x 2 root root 0 Aug 28 19:31 01
dr-xr-xr-x 2 root root 0 Aug 28 19:31 03
-r--r--r-- 1 root root 0 Aug 28 19:31 devices
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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CC arch/mips/sibyte/bcm1480/irq.o
arch/mips/sibyte/bcm1480/irq.c: In function 'bcm1480_mask_irq':
arch/mips/sibyte/bcm1480/irq.c:112: warning: cast to pointer from integer of different size
arch/mips/sibyte/bcm1480/irq.c:114: warning: cast to pointer from integer of different size
arch/mips/sibyte/bcm1480/irq.c: In function 'bcm1480_unmask_irq':
arch/mips/sibyte/bcm1480/irq.c:130: warning: cast to pointer from integer of different size
arch/mips/sibyte/bcm1480/irq.c:132: warning: cast to pointer from integer of different size
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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After 76d2160147f43f982dfe881404cfde9fd0a9da21, the qemu NE2000 was
frequently producing WATCHDOG timeouts.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Same as all the others, just put in the constants for the existing kernel
code and termios2 structure
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Previously, ibmebus derived a device's bus_id from its location code.
The location code is not guaranteed to be unique, so we might get bus_id
collisions if two devices share the same location code. The OFDT
full_name, however, is unique, so we use that instead (truncating it
on the left if it is too long).
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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On PS3, A storage device may show up in the repository before the hypervisor
has finished probing:
- If its type is not yet known, it shows up as PS3_DEV_TYPE_STOR_DUMMY,
- If its regions are being probed, it shows up as having zero regions.
If any of these happen, consider the device not yet present. The storage
probe thread will retry later.
This fixes the timing-dependent problem where a kernel booted from FLASH ROM
sometimes cannot find the hard disk.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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At present, running any SPE program on the ps3 will trigger a BUG_ON
when spufs_run_spu tries to clear the master run control bit, as lv1
does not make the master run control available to Linux.
This change makes SPE apps work again by disabling changes to the
master run control on PS3. Although we don't have the facility to
disable a SPE with supervisor-level privileges, it's better than
hitting the BUG_ON unconditionally.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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interrupt.
The Cell BE Architecture spec states that the SPU MFC Class 0 interrupt
is edge-triggered. The current spu interrupt handler assumes this
behavior and does not clear the interrupt status.
The PS3 hypervisor visualizes all SPU interrupts as level, and on return
from the interrupt handler the hypervisor will deliver a new virtual
interrupt for any unmasked interrupts which for which the status has not
been cleared. This fix clears the interrupt status in the interrupt
handler.
Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The previous patch had the conditional inverted. This patch fixes it
so that we return the original position if it does not straddle a page.
Thanks to Bob Gilligan for spotting this.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This fixes a bug in the way i2c-algo-bit handles I2C_M_RECV_LEN,
used to implement i2c_smbus_read_block_data(). Previously, in the
absence of PEC (rarely used!) it would NAK the "length" byte:
S addr Rd [A] [length] NA
That prevents the subsequent data bytes from being read:
S addr Rd [A] [length] { A [data] }* NA
The primary fix just reorders two code blocks, so the length used
in the "should I NAK now?" check incorporates the data which it
just read from the slave device.
However, that move also highlighted other fault handling glitches.
This fixes those by abstracting the RX path ack/nak logic, so it
can be used in more than one location. Also, a few CodingStyle
issues were also resolved.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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It turns out that platform_device.id is a "u32" so testing it for being
nonnegative is useless when setting up an i2c adapte. Instead,
do what the platform_bus code does and test it against the value "-1".
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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It turns out that platform_device.id is a "u32" so testing it for being
nonnegative is useless when setting up an i2c bitbang device. Instead,
do what the platform_bus code does and test it against the value "-1".
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Fix an off-by-one error in the I/O region declaration of two
hardware monitoring drivers (lm78 and w83781d.) We were requesting
one extra port at the end of the region.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
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The function blkcipher_get_spot tries to return a buffer of
the specified length that does not straddle a page. It has
an off-by-one bug so it may advance a page unnecessarily.
What's worse, one of its callers doesn't provide a buffer
that's sufficiently long for this operation.
This patch fixes both problems. Thanks to Bob Gilligan for
diagnosing this problem and providing a fix.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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regression)
Fixes (papers over) "Sleep problems with kernels >= 2.6.21 on powerpc",
http://lkml.org/lkml/2007/8/25/155. The issue is that the FireWire
controller's pci_dev.current_state of iBook G3 and presumably older
PowerBooks is still in PCI_UNKNOWN instead of PCI_D0 when the firewire
driver's .suspend method is called.
Like it was suggested earlier in http://lkml.org/lkml/2006/10/24/13, we
do not fail .suspend anymore if pci_set_power_state failed.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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The names of STI and CLI macros were derived from i386 arch historically,
but their name are incomprehensible.
So, for easy to understand, rename these macros to ENABLE_INTERRUPTS
and DISABLE_INTERRUPTS, respectively.
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
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This patch fixes the following compile error:
<-- snip -->
...
AS arch/m32r/kernel/entry.o
/home/bunk/linux/kernel-2.6/linux-2.6.23-rc3-mm1/arch/m32r/kernel/entry.S: Assembler messages:
/home/bunk/linux/kernel-2.6/linux-2.6.23-rc3-mm1/arch/m32r/kernel/entry.S:358: Error: bad instruction `addi r0,#(((((0)+(64))+(32))+(32)))'
make[2]: *** [arch/m32r/kernel/entry.o] Error 1
<-- snip -->
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Cc: Adrian Bunk <bunk@kernel.org>
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fix ideal_runtime:
- do not scale it using niced_granularity()
it is against sum_exec_delta, so its wall-time, not fair-time.
- move the whole check into __check_preempt_curr_fair()
so that wakeup preemption can also benefit from the new logic.
this also results in code size reduction:
text data bss dec hex filename
13391 228 1204 14823 39e7 sched.o.before
13369 228 1204 14801 39d1 sched.o.after
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Second preparatory patch for fix-ideal runtime:
Mark prev_sum_exec_runtime at the beginning of our run, the same spot
that adds our wait period to wait_runtime. This seems a more natural
location to do this, and it also reduces the code a bit:
text data bss dec hex filename
13397 228 1204 14829 39ed sched.o.before
13391 228 1204 14823 39e7 sched.o.after
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Preparatory patch for fix-ideal-runtime:
simplify __check_preempt_curr_fair(): get rid of the integer return.
text data bss dec hex filename
13404 228 1204 14836 39f4 sched.o.before
13393 228 1204 14825 39e9 sched.o.after
functionality is unchanged.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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