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Mikulas Patocka [Fri, 15 Aug 2008 08:20:02 +0000 (10:20 +0200)]
drop vmerge accounting
Remove hw_segments field from struct bio and struct request. Without virtual
merge accounting they have no purpose.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Mikulas Patocka [Fri, 15 Aug 2008 08:15:19 +0000 (10:15 +0200)]
block: drop virtual merging accounting
Remove virtual merge accounting.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Aaron Carroll [Thu, 14 Aug 2008 08:17:15 +0000 (18:17 +1000)]
block: update documentation for deadline fifo_batch tunable
Update the description of fifo_batch to match the current implementation,
and include a description of how to tune it.
Signed-off-by: Aaron Carroll <aaronc@gelato.unsw.edu.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Aaron Carroll [Thu, 14 Aug 2008 08:17:14 +0000 (18:17 +1000)]
deadline-iosched: non-functional fixes
* convert goto to simpler while loop;
* use rq_end_sector() instead of computing manually;
* fix false comments;
* remove spurious whitespace;
* convert rq_rb_root macro to an inline function.
Signed-off-by: Aaron Carroll <aaronc@gelato.unsw.edu.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Aaron Carroll [Thu, 14 Aug 2008 08:17:13 +0000 (18:17 +1000)]
deadline-iosched: allow non-sequential batching
Deadline currently only batches sector-contiguous requests, so except
for a few circumstances (e.g. requests in a single direction), it is
essentially first come first served. This is bad for throughput, so
change it to CSCAN, which means requests in a batch do not need to be
sequential and are issued in increasing sector order.
Signed-off-by: Aaron Carroll <aaronc@gelato.unsw.edu.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Fernando Luis Vázquez Cao [Thu, 14 Aug 2008 07:59:13 +0000 (09:59 +0200)]
virtio_blk: use a wrapper function to access io context information of IO requests
struct request has an ioprio member but it is never updated because
currently bios do not hold io context information. The implication of
this is that virtio_blk ends up passing useless information to the
backend driver.
That said, some IO schedulers such as CFQ do store io context
information in struct request, but use private members for that, which
means that that information cannot be directly accessed in a IO
scheduler-independent way.
This patch adds a function to obtain the ioprio of a request. We should
avoid accessing ioprio directly and use this function instead, so that
its users do not have to care about future changes in block layer
structures or what the currently active IO controller is.
This patch does not introduce any functional changes but paves the way
for future clean-ups and enhancements.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Wed, 13 Aug 2008 11:35:09 +0000 (12:35 +0100)]
Kill REQ_TYPE_FLUSH
It was only used by ps3disk, and it should probably have been
REQ_TYPE_LINUX_BLOCK + REQ_LB_OP_FLUSH.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Sat, 9 Aug 2008 15:42:20 +0000 (16:42 +0100)]
Allow elevators to sort/merge discard requests
But blkdev_issue_discard() still emits requests which are interpreted as
soft barriers, because naïve callers might otherwise issue subsequent
writes to those same sectors, which might cross on the queue (if they're
reallocated quickly enough).
Callers still _can_ issue non-barrier discard requests, but they have to
take care of queue ordering for themselves.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Mon, 11 Aug 2008 14:58:42 +0000 (15:58 +0100)]
Add BLKDISCARD ioctl to allow userspace to discard sectors
We may well want mkfs tools to use this to mark the whole device as
unwanted before they format it, for example.
The ioctl takes a pair of uint64_ts, which are start offset and length
in _bytes_. Although at the moment it might make sense for them both to
be in 512-byte sectors, I don't want to limit the ABI to that.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
OGAWA Hirofumi [Mon, 11 Aug 2008 16:07:08 +0000 (17:07 +0100)]
Use WRITE_BARRIER in blkdev_issue_flush(), not (1<<BIO_RW_BARRIER)
Barriers should be submitted with the WRITE flag set.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Sun, 10 Aug 2008 11:33:00 +0000 (12:33 +0100)]
blktrace: simplify flags handling in __blk_add_trace
Let the compiler see what's going on, and it can all get a lot simpler.
On PPC64 this reduces the size of the code calculating these bits by
about 60%. On x86_64 it's less of a win -- only 40%.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Sun, 10 Aug 2008 10:21:57 +0000 (11:21 +0100)]
blktrace: support discard requests
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Tue, 5 Aug 2008 17:08:56 +0000 (18:08 +0100)]
Support 'discard sectors' operation.
We can benefit from knowing that the file system no longer cares about
the contents of certain sectors, by throwing them away immediately and
then never having to garbage collect them, and using the extra free
space to make our operations more efficient. Do so.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Tue, 5 Aug 2008 17:08:25 +0000 (18:08 +0100)]
Support 'discard sectors' operation in translation layer support core
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Tue, 5 Aug 2008 17:05:46 +0000 (18:05 +0100)]
Let the block device know when sectors can be discarded
[hirofumi@mail.parknet.co.jp: discard _after_ checking for corrupt chains]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Tue, 5 Aug 2008 17:01:53 +0000 (18:01 +0100)]
Add 'discard' request handling
Some block devices benefit from a hint that they can forget the contents
of certain sectors. Add basic support for this to the block core, along
with a 'blkdev_issue_discard()' helper function which issues such
requests.
The caller doesn't get to provide an end_io functio, since
blkdev_issue_discard() will automatically split the request up into
multiple bios if appropriate. Neither does the function wait for
completion -- it's expected that callers won't care about when, or even
_if_, the request completes. It's only a hint to the device anyway. By
definition, the file system doesn't _care_ about these sectors any more.
[With feedback from OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> and
Jens Axboe <jens.axboe@oracle.com]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David Woodhouse [Sat, 9 Aug 2008 15:22:17 +0000 (16:22 +0100)]
Fix up comments about matching flags between bio and rq
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Thu, 14 Aug 2008 11:12:15 +0000 (13:12 +0200)]
highmem: use bio_has_data() in the bounce path
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Fri, 8 Aug 2008 09:06:45 +0000 (11:06 +0200)]
block: use bio_has_data() in the IO completion path
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Fri, 8 Aug 2008 09:04:44 +0000 (11:04 +0200)]
block: use bio_has_data() to check for data carrying bio
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Fri, 8 Aug 2008 09:17:12 +0000 (11:17 +0200)]
block: add bio_has_data() to detect whether a bio carries data or not
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
xiphmont@xiph.org [Fri, 22 Aug 2008 09:12:21 +0000 (11:12 +0200)]
SG_IO block filter whitelist missing MMC SET READ AHEAD command
I have another request for the block filter SG_IO command whitelist,
specifically the MMC streaming command set SET READ AHEAD command.
The command applies only to MMC CDROM/DVDROM drives with the streaming
optional feature set. The command is useful to cdparanoia in that it
allows explicit cache control side effects that are, on many drives,
cdparanoia's most efficient way to flush/disable the media cache on
cdrom drives. I am aware of no reason why it should not be accessible
from usespace.
Also note that the command is already fully accessible through the
SCSI-native version of the SG_IO ioctl as well as the traditional SG
interface. The command is only being refused on block devices. That
means that on a typical stock distro, the command is available through
/dev/sg* but not /dev/scd* although both are typically available and
accessible. Filtering the command is not providing any protection,
only a confusing inconsistency.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Linus Torvalds [Wed, 8 Oct 2008 18:41:10 +0000 (11:41 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Sibyte: Register PIO PATA device only for Swarm and Litte Sur
Linus Torvalds [Wed, 8 Oct 2008 18:40:19 +0000 (11:40 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd.
net: Fix netdev_run_todo dead-lock
tcp: Fix possible double-ack w/ user dma
net: only invoke dev->change_rx_flags when device is UP
netrom: Fix sock_orphan() use in nr_release
ax25: Quick fix for making sure unaccepted sockets get destroyed.
Revert "ax25: Fix std timer socket destroy handling."
[Bluetooth] Add reset quirk for A-Link BlueUSB21 dongle
[Bluetooth] Add reset quirk for new Targus and Belkin dongles
[Bluetooth] Fix double frees on error paths of btusb and bpa10x drivers
Ralf Baechle [Wed, 8 Oct 2008 18:14:33 +0000 (19:14 +0100)]
[MIPS] Sibyte: Register PIO PATA device only for Swarm and Litte Sur
Symbol name spaghetti which is too complicated to cleanup on this stage
of the release cycle breaks the build on BCM1480 platforms.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Daniele Lacamera [Tue, 7 Oct 2008 22:58:17 +0000 (15:58 -0700)]
tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd.
Because of rounding, in certain conditions, i.e. when in congestion
avoidance state rho is smaller than 1/128 of the current cwnd, TCP
Hybla congestion control starves and the cwnd is kept constant
forever.
This patch forces an increment by one segment after #send_cwnd calls
without increments(newreno behavior).
Signed-off-by: Daniele Lacamera <root@danielinux.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 7 Oct 2008 22:50:03 +0000 (15:50 -0700)]
net: Fix netdev_run_todo dead-lock
Benjamin Thery tracked down a bug that explains many instances
of the error
unregister_netdevice: waiting for %s to become free. Usage count = %d
It turns out that netdev_run_todo can dead-lock with itself if
a second instance of it is run in a thread that will then free
a reference to the device waited on by the first instance.
The problem is really quite silly. We were trying to create
parallelism where none was required. As netdev_run_todo always
follows a RTNL section, and that todo tasks can only be added
with the RTNL held, by definition you should only need to wait
for the very ones that you've added and be done with it.
There is no need for a second mutex or spinlock.
This is exactly what the following patch does.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 7 Oct 2008 22:32:20 +0000 (15:32 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/holtmann/bluetooth-2.6
Ali Saidi [Tue, 7 Oct 2008 22:31:19 +0000 (15:31 -0700)]
tcp: Fix possible double-ack w/ user dma
From: Ali Saidi <saidi@engin.umich.edu>
When TCP receive copy offload is enabled it's possible that
tcp_rcv_established() will cause two acks to be sent for a single
packet. In the case that a tcp_dma_early_copy() is successful,
copied_early is set to true which causes tcp_cleanup_rbuf() to be
called early which can send an ack. Further along in
tcp_rcv_established(), __tcp_ack_snd_check() is called and will
schedule a delayed ACK. If no packets are processed before the delayed
ack timer expires the packet will be acked twice.
Signed-off-by: David S. Miller <davem@davemloft.net>
Patrick McHardy [Tue, 7 Oct 2008 22:26:48 +0000 (15:26 -0700)]
net: only invoke dev->change_rx_flags when device is UP
Jesper Dangaard Brouer <hawk@comx.dk> reported a bug when setting a VLAN
device down that is in promiscous mode:
When the VLAN device is set down, the promiscous count on the real
device is decremented by one by vlan_dev_stop(). When removing the
promiscous flag from the VLAN device afterwards, the promiscous
count on the real device is decremented a second time by the
vlan_change_rx_flags() callback.
The root cause for this is that the ->change_rx_flags() callback is
invoked while the device is down. The synchronization is meant to mirror
the behaviour of the ->set_rx_mode callbacks, meaning the ->open function
is responsible for doing a full sync on open, the ->close() function is
responsible for doing full cleanup on ->stop() and ->change_rx_flags()
is meant to do incremental changes while the device is UP.
Only invoke ->change_rx_flags() while the device is UP to provide the
intended behaviour.
Tested-by: Jesper Dangaard Brouer <jdb@comx.dk>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Mackall [Tue, 7 Oct 2008 16:37:35 +0000 (11:37 -0500)]
SLOB: fix bogus ksize calculation
SLOB's ksize calculation was braindamaged and generally harmlessly
underreported the allocation size. But for very small buffers, it could
in fact overreport them, leading code depending on krealloc to overrun
the allocation and trample other data.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Tested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 7 Oct 2008 14:54:34 +0000 (07:54 -0700)]
Revert "V4L/DVB (8904): cx88: add missing unlock_kernel"
This reverts commit
135aedc38e812b922aa56096f36a3d72ffbcf2fb, as
requested by Hans Verkuil.
It was a patch for 2.6.28 where the BKL was pushed down from v4l core to
the drivers, not for 2.6.27!
Requested-by: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-of-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 6 Oct 2008 23:39:58 +0000 (16:39 -0700)]
Linux 2.6.27-rc9
Mathieu Desnoyers [Mon, 6 Oct 2008 13:30:12 +0000 (09:30 -0400)]
Marker depmod fix core kernel list
* Theodore Ts'o (tytso@mit.edu) wrote:
>
> I've been playing with adding some markers into ext4 to see if they
> could be useful in solving some problems along with Systemtap. It
> appears, though, that as of 2.6.27-rc8, markers defined in code which is
> compiled directly into the kernel (i.e., not as modules) don't show up
> in Module.markers:
>
> kvm_trace_entryexit arch/x86/kvm/kvm-intel %u %p %u %u %u %u %u %u
> kvm_trace_handler arch/x86/kvm/kvm-intel %u %p %u %u %u %u %u %u
> kvm_trace_entryexit arch/x86/kvm/kvm-amd %u %p %u %u %u %u %u %u
> kvm_trace_handler arch/x86/kvm/kvm-amd %u %p %u %u %u %u %u %u
>
> (Note the lack of any of the kernel_sched_* markers, and the markers I
> added for ext4_* and jbd2_* are missing as wel.)
>
> Systemtap apparently depends on in-kernel trace_mark being recorded in
> Module.markers, and apparently it's been claimed that it used to be
> there. Is this a bug in systemtap, or in how Module.markers is getting
> built? And is there a file that contains the equivalent information
> for markers located in non-modules code?
I think the problem comes from "markers: fix duplicate modpost entry"
(commit
d35cb360c29956510b2fe1a953bd4968536f7216)
Especially :
- add_marker(mod, marker, fmt);
+ if (!mod->skip)
+ add_marker(mod, marker, fmt);
}
return;
fail:
Here is a fix that should take care if this problem.
Thanks for the bug report!
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Tested-by: "Theodore Ts'o" <tytso@mit.edu>
CC: Greg KH <greg@kroah.com>
CC: David Smith <dsmith@redhat.com>
CC: Roland McGrath <roland@redhat.com>
CC: Sam Ravnborg <sam@ravnborg.org>
CC: Wenji Huang <wenji.huang@oracle.com>
CC: Takashi Nishiie <t-nishiie@np.css.fujitsu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 6 Oct 2008 21:30:02 +0000 (14:30 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb: call touch_softlockup_watchdog on resume
kgdb, x86: Avoid invoking kgdb_nmicallback twice per NMI
Linus Torvalds [Mon, 6 Oct 2008 21:29:16 +0000 (14:29 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: gart iommu have direct mapping when agp is present too
Linus Torvalds [Mon, 6 Oct 2008 21:27:57 +0000 (14:27 -0700)]
Merge git://git./linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: workaround for bogus gcc warning in ide_sysfs_register_port()
ide-cd: Optiarc DVD RW AD-7200A does play audio
IDE: Fix platform device registration in Swarm IDE driver (v2)
ide-dma: fix ide_build_dmatable() for TRM290
ide-cd: temporary tray close fix
Linus Torvalds [Mon, 6 Oct 2008 21:27:39 +0000 (14:27 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] IP27: Fix build errors if CONFIG_MAPPED_KERNEL=y
[MIPS] Fix CMP Kconfig configuration and mark as broken.
Linus Torvalds [Mon, 6 Oct 2008 21:27:15 +0000 (14:27 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/mchehab/v4l-dvb
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (33 commits)
V4L/DVB (9103): em28xx: HVR-900 B3C0 - fix audio clicking issue
V4L/DVB (9099): em28xx: Add detection for K-WORLD DVB-T 310U
V4L/DVB (9092): gspca: Bad init values for sonixj ov7660.
V4L/DVB (9080): gspca: Add a delay after writing to the sonixj sensors.
V4L/DVB (9075): gspca: Bad check of returned status in i2c_read() spca561.
V4L/DVB (9053): fix buffer overflow in uvc-video
V4L/DVB (9043): S5H1420: Fix size of shadow-array to avoid overflow
V4L/DVB (9037): Fix support for Hauppauge Nova-S SE
V4L/DVB (9029): Fix deadlock in demux code
V4L/DVB (8979): sms1xxx: Add new USB product ID for Hauppauge WinTV MiniStick
V4L/DVB (8978): sms1xxx: fix product name for Hauppauge WinTV MiniStick
V4L/DVB (8967): Use correct XC3028L firmware for AMD ATI TV Wonder 600
V4L/DVB (8963): s2255drv field count fix
V4L/DVB (8961): zr36067: Fix RGBR pixel format
V4L/DVB (8960): drivers/media/video/cafe_ccic.c needs mm.h
V4L/DVB (8958): zr36067: Return proper bytes-per-line value
V4L/DVB (8957): zr36067: Restore the default pixel format
V4L/DVB (8955): bttv: Prevent NULL pointer dereference in radio_open
V4L/DVB (8935): em28xx-cards: Remove duplicate entry (EM2800_BOARD_KWORLD_USB2800)
V4L/DVB (8933): gspca: Disable light frquency for zc3xx cs2102 Kokom.
...
Haavard Skinnemoen [Mon, 6 Oct 2008 18:09:53 +0000 (20:09 +0200)]
atmel-mci: Initialize BLKR before sending data transfer command
The atmel-mci driver sometimes fails data transfers like this:
mmcblk0: error -5 transferring data
end_request: I/O error, dev mmcblk0, sector
2749769
end_request: I/O error, dev mmcblk0, sector
2749777
It turns out that this might be caused by the BLKR register (which
contains the block size and the number of blocks being transfered) being
initialized too late. This patch moves the initialization of BLKR so
that it contains the correct value before the block transfer command is
sent.
This error is difficult to reproduce, but if you insert a long delay
(mdelay(10) or thereabouts) between the calls to atmci_start_command()
and atmci_submit_data(), all transfers seem to fail without this patch,
while I haven't seen any failures with this patch.
Reported-by: Hein_Tibosch <hein_tibosch@yahoo.es>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jarek Poplawski [Mon, 6 Oct 2008 19:54:57 +0000 (12:54 -0700)]
netrom: Fix sock_orphan() use in nr_release
While debugging another bug it was found that NetRom socks
are sometimes seen unorphaned in sk_free(). This patch moves
sock_orphan() in nr_release() to the beginning (like in ax25,
or rose).
Reported-and-tested-by: Bernard Pidoux f6bvp <f6bvp@free.fr>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Oct 2008 19:53:50 +0000 (12:53 -0700)]
ax25: Quick fix for making sure unaccepted sockets get destroyed.
Since we reverted
30902dc3cb0ea1cfc7ac2b17bcf478ff98420d74 ("ax25: Fix
std timer socket destroy handling.") we have to put some kind of fix
in to cure the issue whereby unaccepted connections do not get destroyed.
The approach used here is from Tihomir Heidelberg - 9a4gl
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Oct 2008 19:48:29 +0000 (12:48 -0700)]
Revert "ax25: Fix std timer socket destroy handling."
This reverts commit
30902dc3cb0ea1cfc7ac2b17bcf478ff98420d74.
It causes all kinds of problems, based upon a report by
Bernard (f6bvp) and analysis by Jarek Poplawski.
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wessel [Mon, 6 Oct 2008 18:50:59 +0000 (13:50 -0500)]
kgdb: call touch_softlockup_watchdog on resume
The softlockup watchdog needs to be touched when resuming the from the
kgdb stopped state to avoid the printk that a CPU is stuck if the
debugger was active for longer than the softlockup threshold.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Jan Kiszka [Mon, 6 Oct 2008 18:50:59 +0000 (13:50 -0500)]
kgdb, x86: Avoid invoking kgdb_nmicallback twice per NMI
Stress-testing KVM's latest NMI support with kgdbts inside an SMP guest,
I came across spurious unhandled NMIs while running the singlestep test.
Looking closer at the code path each NMI takes when KGDB is enabled, I
noticed that kgdb_nmicallback is called twice per event: One time via
DIE_NMI_IPI notification, the second time on DIE_NMI. Removing the first
invocation cures the unhandled NMIs here.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Rafael J. Wysocki [Mon, 6 Oct 2008 09:59:29 +0000 (11:59 +0200)]
x86 ACPI: Blacklist two HP machines with buggy BIOSes
There is a bug in the BIOSes of some HP boxes with AMD Turions which
connects IO-APIC pins with ACPI thermal trip points in such a way that
if the state of the IO-APIC is not as expected by the (buggy) BIOS, the
thermal trip points are set to insanely low values (usually all of them
become 16 degrees Celsius). As a result, thermal throttling kicks in
and knock the system down to its shoes.
Unfortunately some of the recent IO-APIC changes made the bug show up.
To prevent this from happening, blacklist machines that are known to be
affected (nx6115 and 6715b in this particular case).
This fixes http://bugzilla.kernel.org/show_bug.cgi?id=11516 listed as
a regression from 2.6.26.
On my box it was caused by:
commit
691874fa96d6349a8b60f8ea9c2bae52ece79941
Author: Maciej W. Rozycki <macro@linux-mips.org>
Date: Tue May 27 21:19:51 2008 +0100
x86: I/O APIC: timer through 8259A second-chance
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
and the whole story is described in this (huge) thread:
http://marc.info/?l=linux-kernel&m=
121358440508410&w=4
Matthew Garrett told us about that happening on the nx6125:
http://marc.info/?l=linux-kernel&m=
121396307411930&w=4
and then Maciej analysed the breakage on the basis of a DSDT from the
nx6325:
http://marc.info/?l=linux-kernel&m=
121401068718826&w=4
As far as the Dmitry's and Jason's boxes are concerned, I recognized the
symptoms and asked them to verify that the blacklisting helped.
It appears that the buggy BIOS code has been copy-pasted to the entire
range of machines, for no good reason.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Jason Vas Dias <jason.vas.dias@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Marcel Holtmann [Mon, 6 Oct 2008 10:22:52 +0000 (12:22 +0200)]
[Bluetooth] Add reset quirk for A-Link BlueUSB21 dongle
The new A-Link Bluetooth dongle is another one based on the BCM2046 chip
from Broadcom and it also needs to send HCI_Reset before it becomes fully
operational. Without the quirk it will show a lot of I/O errors.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 6 Oct 2008 10:22:51 +0000 (12:22 +0200)]
[Bluetooth] Add reset quirk for new Targus and Belkin dongles
Targus and Belkin have come out with new Bluetooth 2.1 capable dongles
using the latest BCM2046 chip from Broadcom. Both of them are so called
HID proxy dongles and they need to send HCI_Reset before they become
fully operational.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 6 Oct 2008 10:22:51 +0000 (12:22 +0200)]
[Bluetooth] Fix double frees on error paths of btusb and bpa10x drivers
The transfer buffer of an URB will be automatically freed when using
the URB_FREE_BUFFER transfer_flag. So the extra calls to kfree() will
cause a double free.
Reported-by: Justin Mattock <justinmattock@gmail.com>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Ralf Baechle [Fri, 3 Oct 2008 21:43:38 +0000 (22:43 +0100)]
[MIPS] IP27: Fix build errors if CONFIG_MAPPED_KERNEL=y
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 3 Oct 2008 23:06:29 +0000 (00:06 +0100)]
[MIPS] Fix CMP Kconfig configuration and mark as broken.
Because sync-r4k.c doesn't build.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Bartlomiej Zolnierkiewicz [Sun, 5 Oct 2008 16:23:28 +0000 (18:23 +0200)]
ide: workaround for bogus gcc warning in ide_sysfs_register_port()
Reported-by: "Steven Noonan" <steven@uplinklabs.net>
Suggested-by: "Elias Oltmanns" <eo@nebensachen.de>
Cc: mingo@elte.hu
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Bodo Eggert [Sun, 5 Oct 2008 16:23:28 +0000 (18:23 +0200)]
ide-cd: Optiarc DVD RW AD-7200A does play audio
The Optiarc DVD RW AD-7200A can play audio, but tells it could not.
Signed-off-by: Bodo Eggert <7eggert@gmx.de>
Tested-by: Nick Warne <nick@ukfsn.org>
Received-from: Borislav Petkov <petkovbb@googlemail.com>
[bart: keep "audio" quirks together]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Ralf Baechle [Sun, 5 Oct 2008 16:23:28 +0000 (18:23 +0200)]
IDE: Fix platform device registration in Swarm IDE driver (v2)
The Swarm IDE driver uses a release method which is defined in the driver
itself thus potentially oopsable. The simple fix would be to just leak
the device but this patch goes the full length and moves the entire
handling of the platform device in the platform code and retains only
the platform driver code in drivers/ide/mips/swarm.c.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: remove no longer needed BLK_DEV_IDE_SWARM from ide/Kconfig]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Sergei Shtylylov [Sun, 5 Oct 2008 16:23:27 +0000 (18:23 +0200)]
ide-dma: fix ide_build_dmatable() for TRM290
Apparently, 'xcount' being 0 does not mean 0 bytes for TRM290; it means 4 bytes,
judging from the code immediately preceding this check. So, we must never try
to "split" the PRD for TRM290.
This is probably never hit anyway -- with the DMA buffers aligned to at least
512 bytes and ATAPI DMA not being used for non block I/O commands...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Borislav Petkov [Sun, 5 Oct 2008 16:23:27 +0000 (18:23 +0200)]
ide-cd: temporary tray close fix
This one fixes http://bugzilla.kernel.org/show_bug.cgi?id=11602.
A more generic fix for drives which cannot autoclose tray will follow.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
[bart: add an extra parentheses for consistency with the rest of kernel code]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Yinghai Lu [Sat, 4 Oct 2008 22:55:12 +0000 (15:55 -0700)]
x86: gart iommu have direct mapping when agp is present too
move init_memory_mapping() out of init_k8_gatt.
for: http://bugzilla.kernel.org/show_bug.cgi?id=11676
2.6.27-rc2 to rc8, apgart fails, iommu=soft works, regression
This is needed because we need to map the GART aperture even
if the GATT is not initialized.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Wiktor Grebla [Sun, 28 Sep 2008 04:37:48 +0000 (01:37 -0300)]
V4L/DVB (9103): em28xx: HVR-900 B3C0 - fix audio clicking issue
Fixed audio clicking problem which could be heard when using analog tv or composite input
Signed-off-by: Wiktor Grebla <greblus@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Darron Broad [Tue, 30 Sep 2008 05:46:41 +0000 (02:46 -0300)]
V4L/DVB (9099): em28xx: Add detection for K-WORLD DVB-T 310U
Correct firmware type to MTS
Correct audio routing for composite/s-video
Add DVB-T detection.
This patch uses the eeprom hash method for detection as the vendor/product
ids are also used for the DIGIVOX_AD. This may be a clone of the same
product. Explanatory text has been added prior to the hask look-up in
anticipation that it may help others.
The following has been tested to work:
Analogue TV (PAL-I)
Composite In
DVB-T (UK Crystal Palace)
USB AUDIO
The following has not been tested but probably works:
S-Video In
Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean-Francois Moine [Thu, 2 Oct 2008 11:06:59 +0000 (08:06 -0300)]
V4L/DVB (9092): gspca: Bad init values for sonixj ov7660.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean-Francois Moine [Sun, 21 Sep 2008 06:28:55 +0000 (03:28 -0300)]
V4L/DVB (9080): gspca: Add a delay after writing to the sonixj sensors.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Shane [Sun, 14 Sep 2008 07:17:46 +0000 (04:17 -0300)]
V4L/DVB (9075): gspca: Bad check of returned status in i2c_read() spca561.
This makes auto gain functional on 04fc:0561.
Signed-off-by: Shane <gnome42@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Ralph Loader [Tue, 23 Sep 2008 00:06:48 +0000 (21:06 -0300)]
V4L/DVB (9053): fix buffer overflow in uvc-video
There is a buffer overflow in drivers/media/video/uvc/uvc_ctrl.c:
INFO: 0xf2c5ce08-0xf2c5ce0b. First byte 0xa1 instead of 0xcc
INFO: Allocated in uvc_query_v4l2_ctrl+0x3c/0x239 [uvcvideo] age=13 cpu=1 pid=4975
...
A fixed size 8-byte buffer is allocated, and a variable size field is read
into it; there is no particular bound on the size of the field (it is
dependent on hardware and configuration) and it can overflow [also
verified by inserting printk's.]
The patch attempts to size the buffer to the correctly.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patrick Boettcher [Sun, 7 Sep 2008 19:04:38 +0000 (16:04 -0300)]
V4L/DVB (9043): S5H1420: Fix size of shadow-array to avoid overflow
The array size of 'shadow' still needs to be fixed in order to not overflow when reading register 0x00.
Thanks to Oliver Endriss for pointing that out.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patrick Boettcher [Sat, 6 Sep 2008 16:31:58 +0000 (13:31 -0300)]
V4L/DVB (9037): Fix support for Hauppauge Nova-S SE
Different backends have different input busses (saa7146, flexcop).
To reflect that a config-option to the s5h1420-driver was added which makes
the output mode selectable.
Furthermore the s5h1420-driver is now doing the same i2c-method as it was done
before adding support for other i2c-users.
This patch needs to go into the current release of the kernel, as this driver
is currently broken.
(Thanks to Eberhard Kaltenhaeuser for helping out to debug this issue.)
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Andreas Oberritter [Wed, 24 Sep 2008 08:00:37 +0000 (05:00 -0300)]
V4L/DVB (9029): Fix deadlock in demux code
The functions dvb_dmxdev_section_callback, dvb_dmxdev_ts_callback,
dvb_dmx_swfilter_packet, dvb_dmx_swfilter_packets, dvb_dmx_swfilter and
dvb_dmx_swfilter_204 may be called from both interrupt and process
context. Therefore they need to be protected by spin_lock_irqsave()
instead of spin_lock().
This fixes a deadlock discovered by lockdep.
Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Michael Krufky [Tue, 16 Sep 2008 19:46:42 +0000 (16:46 -0300)]
V4L/DVB (8979): sms1xxx: Add new USB product ID for Hauppauge WinTV MiniStick
2040:5510 is the same hardware as 2040:5500
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Michael Krufky [Fri, 12 Sep 2008 02:02:12 +0000 (23:02 -0300)]
V4L/DVB (8978): sms1xxx: fix product name for Hauppauge WinTV MiniStick
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Devin Heitmueller [Tue, 16 Sep 2008 05:02:12 +0000 (02:02 -0300)]
V4L/DVB (8967): Use correct XC3028L firmware for AMD ATI TV Wonder 600
The AMD ATI TV Wonder 600 has an XC3028L and *not* an XC3028, so we need to
load the proper firmware to prevent the device from overheating.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Dean Anderson [Tue, 9 Sep 2008 15:29:56 +0000 (12:29 -0300)]
V4L/DVB (8963): s2255drv field count fix
Fixes videobuf field_count
Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean Delvare [Fri, 5 Sep 2008 13:39:27 +0000 (10:39 -0300)]
V4L/DVB (8961): zr36067: Fix RGBR pixel format
The zr36067 driver is improperly declaring pixel format RGBP twice,
once as "16-bit RGB LE" and once as "16-bit RGB BE". The latter is
actually RGBR. Fix the code to properly map both pixel formats.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Andrew Morton [Wed, 3 Sep 2008 05:15:39 +0000 (02:15 -0300)]
V4L/DVB (8960): drivers/media/video/cafe_ccic.c needs mm.h
sparc32 allmodconfig:
drivers/media/video/cafe_ccic.c: In function 'cafe_setup_siobuf':
drivers/media/video/cafe_ccic.c:1192: error: implicit declaration of function 'PAGE_ALIGN'
drivers/media/video/cafe_ccic.c: At top level:
drivers/media/video/cafe_ccic.c:1430: error: variable 'cafe_v4l_vm_ops' has initializer but incomplete type
drivers/media/video/cafe_ccic.c:1431: error: unknown field 'open' specified in initializer
drivers/media/video/cafe_ccic.c:1431: warning: excess elements in struct initializer
drivers/media/video/cafe_ccic.c:1431: warning: (near initialization for 'cafe_v4l_vm_ops')
drivers/media/video/cafe_ccic.c:1432: error: unknown field 'close' specified in initializer
drivers/media/video/cafe_ccic.c:1433: warning: excess elements in struct initializer
drivers/media/video/cafe_ccic.c:1433: warning: (near initialization for 'cafe_v4l_vm_ops')
drivers/media/video/cafe_ccic.c: In function 'cafe_v4l_mmap':
drivers/media/video/cafe_ccic.c:1444: error: 'VM_WRITE' undeclared (first use in this function)
drivers/media/video/cafe_ccic.c:1444: error: (Each undeclared identifier is reported only once
drivers/media/video/cafe_ccic.c:1444: error: for each function it appears in.)
drivers/media/video/cafe_ccic.c:1444: error: 'VM_SHARED' undeclared (first use in this function)
drivers/media/video/cafe_ccic.c:1461: error: 'VM_DONTEXPAND' undeclared (first use in this function)
This build breakage is caused by some header file shuffle in linux-next. But
I suggest that this patch be merged ahead of linux-next to avoid bisection
breakage.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean Delvare [Sun, 7 Sep 2008 08:56:55 +0000 (05:56 -0300)]
V4L/DVB (8958): zr36067: Return proper bytes-per-line value
The zr36067 driver should return the actual bytes-per-line value when
queried with ioctl VIDIOC_G_FMT, instead of 0. Otherwise user-space
applications can get confused.
Likewise, with ioctl VIDIOC_S_FMT, we are supposed to fill the
bytes-per-line value. And we shouldn't fail if the caller sets the
initial value to something different from 0. This is perfectly valid
for applications to pre-fill this field with the value they expect.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean Delvare [Sun, 7 Sep 2008 08:21:34 +0000 (05:21 -0300)]
V4L/DVB (8957): zr36067: Restore the default pixel format
Restore the default pixel format to YUYV as it used to be before
kernel 2.6.23. It was accidentally changed to BGR3 by commit
603d6f2c8f9f3604f9c6c1f8903efc2df30a000f.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean Delvare [Sun, 7 Sep 2008 16:47:03 +0000 (13:47 -0300)]
V4L/DVB (8955): bttv: Prevent NULL pointer dereference in radio_open
Fix the following crash in the bttv driver:
BUG: unable to handle kernel NULL pointer dereference at
000000000000036c
IP: [<
ffffffffa037860a>] radio_open+0x3a/0x170 [bttv]
This happens because radio_open assumes that all present bttv devices
have a radio function. If a bttv device without radio and one with
radio are installed on the same system, and the one without radio is
registered first, then radio_open checks for the radio device number
of a bttv device that has no radio function, and this breaks. All we
have to do to fix it is to skip bttv devices without a radio function.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Douglas Schilling Landgraf [Mon, 8 Sep 2008 06:22:55 +0000 (03:22 -0300)]
V4L/DVB (8935): em28xx-cards: Remove duplicate entry (EM2800_BOARD_KWORLD_USB2800)
Removed duplicated entry for EM2800_BOARD_KWORLD_USB2800
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Costantino Leandro [Tue, 9 Sep 2008 07:32:46 +0000 (04:32 -0300)]
V4L/DVB (8933): gspca: Disable light frquency for zc3xx cs2102 Kokom.
CS2102K stop streaming on setlightfreq (50Hz & 60Hz).
Disable it for now until a correct solution is found.
Signed-off-by: Costantino Leandro <le_costantino@pixartargentina.com.ar>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Jean-Francois Moine [Fri, 5 Sep 2008 15:49:54 +0000 (12:49 -0300)]
V4L/DVB (8926): gspca: Bad fix of leak memory (changeset
43d2ead315b1).
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Hans Verkuil [Sat, 6 Sep 2008 10:22:13 +0000 (07:22 -0300)]
V4L/DVB (8919): cx18: Fix tuner audio input for Compro H900 cards
Earlier fixes to get the tuner audio working correctly broke the audio
on the Compro VideoMate H900 cards. This is now fixed.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Linus Torvalds [Sat, 4 Oct 2008 19:15:13 +0000 (12:15 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
clockevents: check broadcast tick device not the clock events device
Linus Torvalds [Sat, 4 Oct 2008 19:14:46 +0000 (12:14 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 setup: correct segfault in generation of 32-bit reloc kernel
Thomas Gleixner [Sat, 4 Oct 2008 08:51:07 +0000 (10:51 +0200)]
clockevents: check broadcast tick device not the clock events device
Impact: jiffies increment too fast.
Hugh Dickins noted that with NOHZ=n and HIGHRES=n jiffies get
incremented too fast. The reason is a wrong check in the broadcast
enter/exit code, which keeps the local apic timer in periodic mode
when the switch happens.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Linus Torvalds [Sat, 4 Oct 2008 01:22:36 +0000 (18:22 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
selinux: Fix an uninitialized variable BUG/panic in selinux_secattr_to_sid()
Rafael J. Wysocki [Fri, 3 Oct 2008 22:23:49 +0000 (15:23 -0700)]
ACPI: Make /proc/acpi/wakeup interface handle PCI devices (again)
Make the ACPI /proc/acpi/wakeup interface set the appropriate wake-up bits
of physical devices corresponding to the ACPI devices and make those bits
be set initially for devices that are enabled to wake up by default. This
is needed to restore the 2.6.26 and earlier behavior for the PCI devices
that were previously handled correctly with the help of the
/proc/acpi/wakeup interface.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sven Wegener [Fri, 3 Oct 2008 22:23:48 +0000 (15:23 -0700)]
leds-pca955x: add proper error handling and fix bogus memory handling
Check the return value of led_classdev_register and unregister all
registered devices, if registering one device fails. Also the dynamic
memory handling is totally bogus. You can't allocate multiple chunks via
kzalloc() and expect them to be in order later. I wonder how this ever
worked.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Acked-by: Nate Case <ncase@xes-inc.com>
Tested-by: Nate Case <ncase@xes-inc.com>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sven Wegener [Fri, 3 Oct 2008 22:23:47 +0000 (15:23 -0700)]
leds-fsg: change order of initialization and deinitialization
On initialization, we first do the ioremap and then register the led devices.
On deinitialization, we do it in reverse order. This prevents someone calling
into the brightness_set functions with an invalid latch_address.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Acked-by: Rod Whitby <rod@whitby.id.au>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Haavard Skinnemoen [Fri, 3 Oct 2008 22:23:46 +0000 (15:23 -0700)]
dw_dmac: fix copy/paste bug in tasklet
The tasklet checks RAW.BLOCK twice, and does not check RAW.XFER. This is
obviously wrong, and could theoretically cause the driver to hang.
Reported-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Kerrisk [Fri, 3 Oct 2008 22:23:45 +0000 (15:23 -0700)]
Documentation/HOWTO: info about interface changes should CC linux-api@vger
The "Documentation" section of this file mentions that when an interface
change is made, I should be CCed with info about the change (so that
man-pages can document it). Additionally request that this info be CCed
to the new linux-api@vger.kernel.org list.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Kerrisk [Fri, 3 Oct 2008 22:23:44 +0000 (15:23 -0700)]
SubmitChecklist: interfaces changes should CC linux-api@
Mention that patches that change the kernel-userland interface should
be CCed to the new list linux-api@vger.kernel.org.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Kerrisk [Fri, 3 Oct 2008 22:23:44 +0000 (15:23 -0700)]
MAINTAINERS: add mailing list for man-pages
Nowadays, man-pages has an associated mailing list. Mention that list
in MAINTAINERS.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Jackson [Fri, 3 Oct 2008 22:23:42 +0000 (15:23 -0700)]
cpusets: remove pj from cpuset maintainers
Remove myself from the kernel MAINTAINERS file for cpusets. I am leaving
SGI and probably will not be active in Linux kernel work. I can be
reached at <pj@usa.net>. Contact Derek Fults <dfults@sgi.com> for future
SGI+cpuset related issues. I'm off to the next chapter of this good life.
Signed-off-by: Paul Jackson <pj@sgi.com>
Cc: Paul Menage <menage@google.com>
Cc: Derek Fults <dfults@sgi.com>
Cc: John Hesterberg <jh@sgi.com>
Cc: Paul Jackson <pj@usa.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Fri, 3 Oct 2008 22:23:41 +0000 (15:23 -0700)]
include/linux/stacktrace.h: declare struct task_struct
include/linux/stacktrace.h:13: warning:
'struct task_struct' declared inside parameter list
(This might be a hard error on sparc64, which uses this header and has
-Werror)
Reported-by: "Randy.Dunlap" <rdunlap@xenotime.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Lennert Buytenhek [Fri, 3 Oct 2008 22:23:39 +0000 (15:23 -0700)]
orion_spi: fix handling of default transfer speed
Accept zero (the default!) as a per-transfer clock speed override.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Helt [Fri, 3 Oct 2008 22:23:38 +0000 (15:23 -0700)]
fbdev: fix recursive notifier and locking when fbdev console is blanked
Fix infinite recursive notifier in the fbdev layer. This causes recursive
locking. Dmitry Baryshkov found the problem and confirmed that the patch
fixes the bug.
After doing
# echo 1 > /sys/class/graphics/fb0/blank
I got the following in my kernel log:
=============================================
[ INFO: possible recursive locking detected ]
2.6.27-rc6-00086-gda63874-dirty #97
---------------------------------------------
echo/1564 is trying to acquire lock:
((fb_notifier_list).rwsem){..--}, at: [<
c005a384>] __blocking_notifier_call_chain+0x38/0x6c
but task is already holding lock:
((fb_notifier_list).rwsem){..--}, at: [<
c005a384>] __blocking_notifier_call_chain+0x38/0x6c
other info that might help us debug this:
2 locks held by echo/1564:
#0: (&buffer->mutex){--..}, at: [<
c00ddde0>] sysfs_write_file+0x30/0x80
#1: ((fb_notifier_list).rwsem){..--}, at: [<
c005a384>] __blocking_notifier_call_chain+0x38/0x6c
stack backtrace:
[<
c0029fe4>] (dump_stack+0x0/0x14) from [<
c0060ce0>] (print_deadlock_bug+0xa4/0xd0)
[<
c0060c3c>] (print_deadlock_bug+0x0/0xd0) from [<
c0060e54>] (check_deadlock+0x148/0x17c)
r6:
c397a1e0 r5:
c397a530 r4:
c04fcf98
[<
c0060d0c>] (check_deadlock+0x0/0x17c) from [<
c00637e8>] (validate_chain+0x3c4/0x4f0)
[<
c0063424>] (validate_chain+0x0/0x4f0) from [<
c0063efc>] (__lock_acquire+0x5e8/0x6b4)
[<
c0063914>] (__lock_acquire+0x0/0x6b4) from [<
c006402c>] (lock_acquire+0x64/0x78)
[<
c0063fc8>] (lock_acquire+0x0/0x78) from [<
c0316ca8>] (down_read+0x4c/0x60)
r7:
00000009 r6:
ffffffff r5:
c0427a40 r4:
c005a384
[<
c0316c5c>] (down_read+0x0/0x60) from [<
c005a384>] (__blocking_notifier_call_chain+0x38/0x6c)
r5:
c0427a40 r4:
c0427a74
[<
c005a34c>] (__blocking_notifier_call_chain+0x0/0x6c) from [<
c005a3d8>] (blocking_notifier_call_chain+0x20/0x28)
r8:
00000009 r7:
c086d640 r6:
c3967940 r5:
00000000 r4:
c38984b8
[<
c005a3b8>] (blocking_notifier_call_chain+0x0/0x28) from [<
c014baa0>] (fb_notifier_call_chain+0x1c/0x24)
[<
c014ba84>] (fb_notifier_call_chain+0x0/0x24) from [<
c014c18c>] (fb_blank+0x64/0x70)
[<
c014c128>] (fb_blank+0x0/0x70) from [<
c0155978>] (fbcon_blank+0x114/0x1bc)
r5:
00000001 r4:
c38984b8
[<
c0155864>] (fbcon_blank+0x0/0x1bc) from [<
c0170ea8>] (do_blank_screen+0x1e0/0x2a0)
[<
c0170cc8>] (do_blank_screen+0x0/0x2a0) from [<
c0154024>] (fbcon_fb_blanked+0x74/0x94)
r5:
c3967940 r4:
00000001
[<
c0153fb0>] (fbcon_fb_blanked+0x0/0x94) from [<
c0154228>] (fbcon_event_notify+0x100/0x12c)
r5:
fffffffe r4:
c39bc194
[<
c0154128>] (fbcon_event_notify+0x0/0x12c) from [<
c005a0d4>] (notifier_call_chain+0x38/0x7c)
[<
c005a09c>] (notifier_call_chain+0x0/0x7c) from [<
c005a3a0>] (__blocking_notifier_call_chain+0x54/0x6c)
r8:
c3b51ea0 r7:
00000009 r6:
ffffffff r5:
c0427a40 r4:
c0427a74
[<
c005a34c>] (__blocking_notifier_call_chain+0x0/0x6c) from [<
c005a3d8>] (blocking_notifier_call_chain+0x20/0x28)
r8:
00000001 r7:
c3a7e000 r6:
00000000 r5:
00000000 r4:
c38984b8
[<
c005a3b8>] (blocking_notifier_call_chain+0x0/0x28) from [<
c014baa0>] (fb_notifier_call_chain+0x1c/0x24)
[<
c014ba84>] (fb_notifier_call_chain+0x0/0x24) from [<
c014c18c>] (fb_blank+0x64/0x70)
[<
c014c128>] (fb_blank+0x0/0x70) from [<
c014e450>] (store_blank+0x54/0x7c)
r5:
c38984b8 r4:
c3b51ec4
[<
c014e3fc>] (store_blank+0x0/0x7c) from [<
c017981c>] (dev_attr_store+0x28/0x2c)
r8:
00000001 r7:
c042bf80 r6:
c39eba10 r5:
c3967c30 r4:
c38e0140
[<
c01797f4>] (dev_attr_store+0x0/0x2c) from [<
c00ddaac>] (flush_write_buffer+0x54/0x68)
[<
c00dda58>] (flush_write_buffer+0x0/0x68) from [<
c00dde08>] (sysfs_write_file+0x58/0x80)
r8:
c3b51f78 r7:
c3bcb070 r6:
c39eba10 r5:
00000001 r4:
00000001
[<
c00dddb0>] (sysfs_write_file+0x0/0x80) from [<
c009de04>] (vfs_write+0xb8/0x148)
[<
c009dd4c>] (vfs_write+0x0/0x148) from [<
c009e384>] (sys_write+0x44/0x70)
r7:
00000004 r6:
c3bcb070 r5:
00000000 r4:
00000000
[<
c009e340>] (sys_write+0x0/0x70) from [<
c0025d00>] (ret_fast_syscall+0x0/0x2c)
r6:
4001b000 r5:
00000001 r4:
401dc658
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Reported-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Testted-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Marcin Slusarz [Fri, 3 Oct 2008 22:23:36 +0000 (15:23 -0700)]
rtc: fix kernel panic on second use of SIGIO nofitication
When userspace uses SIGIO notification and forgets to disable it before
closing file descriptor, rtc->async_queue contains stale pointer to struct
file. When user space enables again SIGIO notification in different
process, kernel dereferences this (poisoned) pointer and crashes.
So disable SIGIO notification on close.
Kernel panic:
(second run of qemu (requires echo 1024 > /sys/class/rtc/rtc0/max_user_freq))
general protection fault: 0000 [1] PREEMPT
CPU 0
Modules linked in: af_packet snd_pcm_oss snd_mixer_oss snd_seq_oss snd_seq_midi_event snd_seq usbhid tuner tea5767 tda8290 tuner_xc2028 xc5000 tda9887 tuner_simple tuner_types mt20xx tea5761 tda9875 uhci_hcd ehci_hcd usbcore bttv snd_via82xx snd_ac97_codec ac97_bus snd_pcm snd_timer ir_common compat_ioctl32 snd_page_alloc videodev v4l1_compat snd_mpu401_uart snd_rawmidi v4l2_common videobuf_dma_sg videobuf_core snd_seq_device snd btcx_risc soundcore tveeprom i2c_viapro
Pid: 5781, comm: qemu-system-x86 Not tainted 2.6.27-rc6 #363
RIP: 0010:[<
ffffffff8024f891>] [<
ffffffff8024f891>] __lock_acquire+0x3db/0x73f
RSP: 0000:
ffffffff80674cb8 EFLAGS:
00010002
RAX:
ffff8800224c62f0 RBX:
0000000000000046 RCX:
0000000000000002
RDX:
0000000000000000 RSI:
0000000000000000 RDI:
ffff8800224c62f0
RBP:
ffffffff80674d08 R08:
0000000000000002 R09:
0000000000000001
R10:
ffffffff80238941 R11:
0000000000000001 R12:
0000000000000000
R13:
6b6b6b6b6b6b6b6b R14:
ffff88003a450080 R15:
0000000000000000
FS:
00007f98b69516f0(0000) GS:
ffffffff80623200(0000) knlGS:
00000000f7cc86d0
CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
CR2:
0000000000a87000 CR3:
0000000022598000 CR4:
00000000000006e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000ffff0ff0 DR7:
0000000000000400
Process qemu-system-x86 (pid: 5781, threadinfo
ffff880028812000, task
ffff88003a450080)
Stack:
ffffffff80674cf8 0000000180238440 0000000200000002 0000000000000000
ffff8800224c62f0 0000000000000046 0000000000000000 0000000000000002
0000000000000002 0000000000000000 ffffffff80674d68 ffffffff8024fc7a
Call Trace:
<IRQ> [<
ffffffff8024fc7a>] lock_acquire+0x85/0xa9
[<
ffffffff8029cb62>] ? send_sigio+0x2a/0x184
[<
ffffffff80491d1f>] _read_lock+0x3e/0x4a
[<
ffffffff8029cb62>] ? send_sigio+0x2a/0x184
[<
ffffffff8029cb62>] send_sigio+0x2a/0x184
[<
ffffffff8024fb97>] ? __lock_acquire+0x6e1/0x73f
[<
ffffffff8029cd4d>] ? kill_fasync+0x2c/0x4e
[<
ffffffff8029cd10>] __kill_fasync+0x54/0x65
[<
ffffffff8029cd5b>] kill_fasync+0x3a/0x4e
[<
ffffffff80402896>] rtc_update_irq+0x9c/0xa5
[<
ffffffff80404640>] cmos_interrupt+0xae/0xc0
[<
ffffffff8025d1c1>] handle_IRQ_event+0x25/0x5a
[<
ffffffff8025e5e4>] handle_edge_irq+0xdd/0x123
[<
ffffffff8020da34>] do_IRQ+0xe4/0x144
[<
ffffffff8020bad6>] ret_from_intr+0x0/0xf
<EOI> [<
ffffffff8026fdc2>] ? __alloc_pages_internal+0xe7/0x3ad
[<
ffffffff8033fe67>] ? clear_page_c+0x7/0x10
[<
ffffffff8026fc10>] ? get_page_from_freelist+0x385/0x450
[<
ffffffff8026fdc2>] ? __alloc_pages_internal+0xe7/0x3ad
[<
ffffffff80280aac>] ? anon_vma_prepare+0x2e/0xf6
[<
ffffffff80279400>] ? handle_mm_fault+0x227/0x6a5
[<
ffffffff80494716>] ? do_page_fault+0x494/0x83f
[<
ffffffff8049251d>] ? error_exit+0x0/0xa9
Code: cc 41 39 45 28 74 24 e8 5e 1d 0f 00 85 c0 0f 84 6a 03 00 00 83 3d 8f a9 aa 00 00 be 47 03 00 00 0f 84 6a 02 00 00 e9 53 03 00 00 <41> ff 85 38 01 00 00 45 8b be 90 06 00 00 41 83 ff 2f 76 24 e8
RIP [<
ffffffff8024f891>] __lock_acquire+0x3db/0x73f
RSP <
ffffffff80674cb8>
---[ end trace
431877d860448760 ]---
Kernel panic - not syncing: Aiee, killing interrupt handler!
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Moore [Fri, 3 Oct 2008 14:51:15 +0000 (10:51 -0400)]
selinux: Fix an uninitialized variable BUG/panic in selinux_secattr_to_sid()
At some point during the 2.6.27 development cycle two new fields were added
to the SELinux context structure, a string pointer and a length field. The
code in selinux_secattr_to_sid() was not modified and as a result these two
fields were left uninitialized which could result in erratic behavior,
including kernel panics, when NetLabel is used. This patch fixes the
problem by fully initializing the context in selinux_secattr_to_sid() before
use and reducing the level of direct context manipulation done to help
prevent future problems.
Please apply this to the 2.6.27-rcX release stream.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
Linus Torvalds [Fri, 3 Oct 2008 21:11:43 +0000 (14:11 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] SMTC: Fix SMTC dyntick support.
[MIPS] SMTC: Close tiny holes in the SMTC IPI replay system.
[MIPS] SMTC: Fix holes in SMTC and FPU affinity support.
[MIPS] SMTC: Build fix: Fix filename in Makefile
[MIPS] Build fix: Fix irq flags type
Linus Torvalds [Fri, 3 Oct 2008 20:43:05 +0000 (13:43 -0700)]
Merge branch 'for-linus' of git://git390.osdl.marist.edu/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] qdio: prevent stack clobber
[S390] nohz: Fix __udelay.
H. Peter Anvin [Fri, 3 Oct 2008 20:00:56 +0000 (13:00 -0700)]
x86 setup: correct segfault in generation of 32-bit reloc kernel
Impact: segfault on build of a 32-bit relocatable kernel
When converting arch/x86/boot/compressed/relocs.c to support unlimited
sections, the computation of sym_strtab in walk_relocs() was done
incorrectly. This causes a segfault for some people when building the
relocatable 32-bit kernel.
Pointed out by Anonymous <pageexec@freemail.hu>.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Linus Torvalds [Fri, 3 Oct 2008 20:38:07 +0000 (13:38 -0700)]
Fix init/main.c to use regular printk with '%pF' for initcall fn
.. small detail, but the silly e1000e initcall warning debugging caused
me to look at this code. Rather than gouge my eyes out with a spoon, I
just fixed it.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>