Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
cfq-iosched: cache prio_tree root in cfqq->p_root
cfq-iosched: fix bug with aliased request and cooperation detection
cfq-iosched: clear ->prio_trees[] on cfqd alloc
block: fix intermittent dm timeout based oops
umem: fix request_queue lock warning
block: simplify I/O stat accounting
pktcdvd.h should include mempool.h
cfq-iosched: use the default seek distance when there aren't enough seek samples
cfq-iosched: make seek_mean converge more quickly
block: make blk_abort_queue() ignore non-request based devices
block: include empty disks in /proc/diskstats
bio: use bio_kmalloc() in copy/map functions
bio: fix bio_kmalloc()
block: fix queue bounce limit setting
block: fix SG_IO vector request data length handling
scatterlist: make sure sg_miter_next() doesn't return 0 sized mappings
Jonathan Corbet [Wed, 22 Apr 2009 11:01:49 +0000 (12:01 +0100)]
Delete slow-work timers properly
Slow-work appears to delete its timer as soon as the first user
unregisters, even though other users could be active. At the same time, it
never seems to delete slow_work_oom_timer. Arrange for both to happen in
the shutdown path.
Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (94 commits)
netfilter: ctnetlink: fix gcc warning during compilation
net/netrom: Fix socket locking
netlabel: Always remove the correct address selector
ucc_geth.c: Fix upsmr setting in RMII mode
8139too: fix HW initial flow
af_iucv: Fix race when queuing incoming iucv messages
af_iucv: Test additional sk states in iucv_sock_shutdown
af_iucv: Reject incoming msgs if RECV_SHUTDOWN is set
af_iucv: fix oops in iucv_sock_recvmsg() for MSG_PEEK flag
af_iucv: consider state IUCV_CLOSING when closing a socket
iwlwifi: DMA fixes
iwlwifi: add debugging for TX path
mwl8: fix build warning.
mac80211: fix alignment calculation bug
mac80211: do not print WARN if config interface
iwl3945: use cancel_delayed_work_sync to cancel rfkill_poll
iwlwifi: fix EEPROM validation mask to include OTP only devices
atmel: fix netdev ops conversion
pcnet_cs: add cis(firmware) of the Allied Telesis LA-PCM
mlx4_en: Fix cleanup if workqueue create in mlx4_en_add() fails
...
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: Fix bus type probing for ESP and LE devices.
sparc32: Update defconfig.
sparc64: Update defconfig.
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
powerpc: Fix modular build of ide-pmac when mediabay is built in
powerpc/pasemi: Fix build error on UP
powerpc: Make macintosh/mediabay driver depend on CONFIG_BLOCK
maintainers: Fix PS3 patterns
powerpc/ps3: Fix CONFIG_PS3_FLASH=n build warning
powerpc/32: Don't clobber personality flags on exec
powerpc: Fix crash on CPU hotplug
powerpc/85xx: Remove defconfigs that mpc85xx_{smp_}defconfig cover
powerpc/85xx: Added SMP defconfig
powerpc/85xx: Enabled a bunch of FSL specific drivers/options
powerpc/85xx: Updated generic mpc85xx_defconfig
powerpc: don't disable SATA interrupts on Freescale MPC8610 HPCD
fsl_rio: Pass the proper device to dma mapping routines
powerpc: Fix of_node_put() exit path in of_irq_map_one()
powerpc/5200: defconfig updates
powerpc/5200: Add FLASH nodes to lite5200 device tree
powerpc/device-tree: Document MTD nodes with multiple "reg" tuples
powerpc/of-device-tree: Factor MTD physmap bindings out of booting-without-of
powerpc/5200: Bring the legacy fsl_spi_platform_data hooks back
write_lock(¤t->fs->lock) guarantees we can't wrongly miss
LSM_UNSAFE_SHARE, this is what we care about. Use rcu_read_lock()
instead of ->siglock to iterate over the sub-threads. We must see
all CLONE_THREAD|CLONE_FS threads which didn't pass exit_fs(), it
takes fs->lock too.
With or without this patch we can miss the freshly cloned thread
and set LSM_UNSAFE_SHARE, we don't care.
do_execve() must not clear fs->in_exec if it was set by another thread
If do_execve() fails after check_unsafe_exec(), it clears fs->in_exec
unconditionally. This is wrong if we race with our sub-thread which
also does do_execve:
Two threads T1 and T2 and another process P, all share the same
->fs.
T1 starts do_execve(BAD_FILE). It calls check_unsafe_exec(), since
->fs is shared, we set LSM_UNSAFE but not ->in_exec.
P exits and decrements fs->users.
T2 starts do_execve(), calls check_unsafe_exec(), now ->fs is not
shared, we set fs->in_exec.
T1 continues, open_exec(BAD_FILE) fails, we clear ->in_exec and
return to the user-space.
T1 does clone(CLONE_FS /* without CLONE_THREAD */).
T2 continues without LSM_UNSAFE_SHARE while ->fs is shared with
another process.
Change check_unsafe_exec() to return res = 1 if we set ->in_exec, and change
do_execve() to clear ->in_exec depending on res.
When do_execve() suceeds, it is safe to clear ->in_exec unconditionally.
It can be set only if we don't share ->fs with another process, and since
we already killed all sub-threads either ->in_exec == 0 or we are the
only user of this ->fs.
Also, we do not need fs->lock to clear fs->in_exec.
Currently we look it up from ->ioprio, but ->ioprio can change if
either the process gets its IO priority changed explicitly, or if
cfq decides to temporarily boost it. So if we are unlucky, we can
end up attempting to remove a node from a different rbtree root than
where it was added.
Fix this by using ->org_ioprio as the prio_tree index, since that
will only change for explicit IO priority settings (not for a boost).
Additionally cache the rbtree root inside the cfqq, then we don't have
to add code to reinsert the cfqq in the prio_tree if IO priority changes.
cfq-iosched: fix bug with aliased request and cooperation detection
cfq_prio_tree_lookup() should return the direct match, yet it always
returns zero. Fix that.
cfq_prio_tree_add() assumes that we don't get a direct match, while
it is very possible that we do. Using O_DIRECT, you can have different
cfqq with matching requests, since you don't have the page cache
to serialize things for you. Fix this bug by only adding the cfqq if
there isn't an existing match.
Hannes Reinecke [Thu, 23 Apr 2009 08:32:59 +0000 (10:32 +0200)]
block: fix intermittent dm timeout based oops
Very rarely under stress testing of dm, oopses are occuring as
something tampers with an old stack frame. This has been traced back
to blk_abort_queue() leaving a timeout_list pointing to the stack.
The reason is that sometimes blk_abort_request() won't delete the
timer (if the request is marked as complete but before the timer has
been removed, a small race window). Fix this by splicing back from
the ususally empty list to the q->timeout_list.
Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Sage Weil [Thu, 23 Apr 2009 06:37:58 +0000 (08:37 +0200)]
umem: fix request_queue lock warning
The umem driver issues two warnings on boot, due to blk_plug_device() and
blk_remove_plug() being called without q->queue_lock held. Starting with e48ec690 (block: extend queue_flag bitops), the queue_flag_* functions
warn if q->queue_lock doesn't appear to be locked. In fact, q->queue_lock
is NULL (though that apparently isn't otherwise a problem as the driver is
using card->lock for everything).
Although blk_init_queue() with take a request_fn_proc and spinlock_t*,
there isn't a corresponding init helper that takes a make_request_fn.
Setting queue_lock to &card->lock explicitly seems to work fine for me.
The warning goes away and the device appears to behave.
This simplifies I/O stat accounting switching code and separates it
completely from I/O scheduler switch code.
Requests are accounted according to the state of their request queue
at the time of the request allocation. There is no need anymore to
flush the request queue when switching I/O accounting state.
Fix this build error:
In file included from fs/compat_ioctl.c:104:
include/linux/pktcdvd.h:285: error: expected specifier-qualifier-list before 'mempool_t'
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
David S. Miller [Fri, 17 Apr 2009 11:14:15 +0000 (04:14 -0700)]
sparc: Fix bus type probing for ESP and LE devices.
If there is a dummy "espdma" or "ledma" parent device above ESP scsi
or LE ethernet device nodes, we have to match the bus as SBUS.
Otherwise the address and size cell counts are wrong and we don't
calculate the final physical device resource values correctly at all.
Commit 5280267c1dddb8d413595b87dc406624bb497946 ("sparc: Fix handling
of LANCE and ESP parent nodes in of_device.c") was meant to fix this
problem, but that only influences the inner loop of
build_device_resources(). We need this logic to also kick in at the
beginning of build_device_resources() as well, when we make the first
attempt to determine the device's immediate parent bus type for 'reg'
property element extraction.
Based almost entirely upon a patch by Friedrich Oslage.
Tested-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>
netfilter: ctnetlink: fix gcc warning during compilation
This patch fixes a (bogus?) gcc warning during compilation:
net/netfilter/nf_conntrack_netlink.c:1234: warning: 'helpname' may be used uninitialized in this function
net/netfilter/nf_conntrack_netlink.c:991: warning: 'helpname' may be used uninitialized in this function
In fact, helpname is initialized by ctnetlink_parse_help() so
I cannot see a way to use it without being initialized.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Jean Delvare [Wed, 22 Apr 2009 07:49:51 +0000 (00:49 -0700)]
net/netrom: Fix socket locking
Patch "af_rose/x25: Sanity check the maximum user frame size"
(commit 83e0bbcbe2145f160fbaa109b0439dae7f4a38a9) from Alan Cox got
locking wrong. If we bail out due to user frame size being too large,
we must unlock the socket beforehand.
Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Moore [Tue, 21 Apr 2009 10:04:22 +0000 (10:04 +0000)]
netlabel: Always remove the correct address selector
The NetLabel address selector mechanism has a problem where it can get
mistakenly remove the wrong selector when similar addresses are used. The
problem is caused when multiple addresses are configured that have different
netmasks but the same address, e.g. 127.0.0.0/8 and 127.0.0.0/24. This patch
fixes the problem.
Reported-by: Etienne Basset <etienne.basset@numericable.fr> Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org> Tested-by: Etienne Basset <etienne.basset@numericable.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Jianjun kong [Mon, 20 Apr 2009 23:48:25 +0000 (23:48 +0000)]
8139too: fix HW initial flow
While ifconfig eth0 up kernel calls open() of 8139 driver(8139too.c).
In rtl8139_hw_start() of rtl8139_open(), 8139 driver enable RX before
setting up the DMA buffer address. In this interval where RX was
enabled and DMA buffer address is not yet set up, any incoming
broadcast packet would be send to a strange physical address:
0x003e8800 which is the default value of DMA buffer address.
Unfortunately, this address is used by Linux kernel. So kernel panics.
This patch fix it by setting up DMA buffer address before RX enabled
and everything is fine even under broadcast packets attack.
Signed-off-by: Jonathan Lin <jon.lin@vatics.com> Signed-off-by: Amos Kong <jianjun@zeuux.org> Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
af_iucv: Fix race when queuing incoming iucv messages
AF_IUCV runs into a race when queuing incoming iucv messages
and receiving the resulting backlog.
If the Linux system is under pressure (high load or steal time),
the message queue grows up, but messages are not received and queued
onto the backlog queue. In that case, applications do not
receive any data with recvmsg() even if AF_IUCV puts incoming
messages onto the message queue.
The race can be avoided if the message queue spinlock in the
message_pending callback is spreaded across the entire callback
function.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
af_iucv: Test additional sk states in iucv_sock_shutdown
Add few more sk states in iucv_sock_shutdown().
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
af_iucv: Reject incoming msgs if RECV_SHUTDOWN is set
Reject incoming iucv messages if the receive direction has been shut down.
It avoids that the queue of outstanding messages increases and exceeds the
message limit of the iucv communication path.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
af_iucv: fix oops in iucv_sock_recvmsg() for MSG_PEEK flag
If iucv_sock_recvmsg() is called with MSG_PEEK flag set, the skb is enqueued
twice. If the socket is then closed, the pointer to the skb is freed twice.
Remove the skb_queue_head() call for MSG_PEEK, because the skb_recv_datagram()
function already handles MSG_PEEK (does not dequeue the skb).
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Moyer [Tue, 21 Apr 2009 05:31:56 +0000 (07:31 +0200)]
cfq-iosched: use the default seek distance when there aren't enough seek samples
If the cfq io context doesn't have enough samples yet to provide a mean
seek distance, then use the default threshold we have for seeky IO instead
of defaulting to 0.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jeff Moyer [Tue, 21 Apr 2009 05:25:04 +0000 (07:25 +0200)]
cfq-iosched: make seek_mean converge more quickly
Right now, depending on the first sector to which a process issues I/O,
the seek time may start out way out of whack. So make sure we start
with 0 sectors in seek, instead of the offset of the first request
issued.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
/proc/diskstats used to show stats for all disks whether they're
zero-sized or not and their non-zero partitions. Commit 074a7aca7afa6f230104e8e65eba3420263714a5 accidentally changed the
behavior such that it doesn't print out zero sized disks. This patch
implements DISK_PITER_INCL_EMPTY_PART0 flag to partition iterator and
uses it in diskstats_show() such that empty part0 is shown in
/proc/diskstats.
There is no reason to use mempool backed allocation for map functions.
Also, because kern mapping is used inside LLDs (e.g. for EH), using
mempool backed allocation can lead to deadlock under extreme
conditions (mempool already consumed by the time a request reached EH
and requests are blocked on EH).
Impact: fix bio_kmalloc() and its destruction path
bio_kmalloc() was broken in two ways.
* bvec_alloc_bs() first allocates bvec using kmalloc() and then
ignores it and allocates again like non-kmalloc bvecs.
* bio_kmalloc_destructor() didn't check for and free bio integrity
data.
This patch fixes the above problems. kmalloc patch is separated out
from bio_alloc_bioset() and allocates the requested number of bvecs as
inline bvecs.
* bio_alloc_bioset() no longer takes NULL @bs. None other than
bio_kmalloc() used it and outside users can't know how it was
allocated anyway.
* Define and use BIO_POOL_NONE so that pool index check in
bvec_free_bs() triggers if inline or kmalloc allocated bvec gets
there.
* Relocate destructors on top of each allocation function so that how
they're used is more clear.
Impact: don't set GFP_DMA in q->bounce_gfp unnecessarily
All DMA address limits are expressed in terms of the last addressable
unit (byte or page) instead of one plus that. However, when
determining bounce_gfp for 64bit machines in blk_queue_bounce_limit(),
it compares the specified limit against 0x100000000UL to determine
whether it's below 4G ending up falsely setting GFP_DMA in
q->bounce_gfp.
As DMA zone is very small on x86_64, this makes larger SG_IO transfers
very eager to trigger OOM killer. Fix it. While at it, rename the
parameter to @dma_mask for clarity and convert comment to proper
winged style.
block: fix SG_IO vector request data length handling
Impact: fix SG_IO behavior such that it matches the documentation
SG_IO howto says that if ->dxfer_len and sum of iovec disagress, the
shorter one wins. However, the current implementation returns -EINVAL
for such cases. Trim iovc if it's longer than ->dxfer_len.
This patch uses iov_*() helpers which take struct iovec * by casting
struct sg_iovec * to it. sg_iovec is always identical to iovec and
this will be further cleaned up with later patches.
scatterlist: make sure sg_miter_next() doesn't return 0 sized mappings
Impact: fix not-so-critical but annoying bug
sg_miter_next() returns 0 sized mapping if there is an zero sized sg
entry in the list or at the end of each iteration. As the users
always check the ->length field, this bug shouldn't be critical other
than causing unnecessary iteration.
powerpc: Fix modular build of ide-pmac when mediabay is built in
Now that the powermac IDE host driver can be modular, we need to
export check_media_bay_by_base() and media_bay_set_ide_infos()
from drivers/macintosh/mediabay.c for it.
This fixes the following build error:
> CC [M] drivers/ide/pmac.o
> drivers/ide/pmac.c: In function ‘pmac_ide_init_dev’:
> drivers/ide/pmac.c:955: error: implicit declaration of function
> ‘check_media_bay_by_base’
> drivers/ide/pmac.c: In function ‘pmac_ide_setup_device’:
> drivers/ide/pmac.c:1090: error: implicit declaration of function
> ‘media_bay_set_ide_infos’
> make[2]: *** [drivers/ide/pmac.o] Error 1
> make[1]: *** [drivers/ide] Error 2
> make: *** [drivers] Error 2
A non-SMP version of smp_send_stop() is now included in smp.h.
Remove the unneeded definition in the pasemi setup.c.
Fixes build errors like these when CONFIG_SMP=n:
arch/powerpc/platforms/pasemi/setup.c:48: error: redefinition of ‘smp_send_stop’
include/linux/smp.h:125: error: previous definition of 'smp_send_stop' was here
Reported-by: subrata@linux.vnet.ibm.com Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
Correct the MAINTAINERS file patterns for PS3. Removes some PS3
patterns that were under 'CELL BROADBAND ENGINE ARCHITECTURE', and
adds missing PS3 sound and RTC driver patterns.
Andreas Schwab [Thu, 16 Apr 2009 06:22:01 +0000 (06:22 +0000)]
powerpc/32: Don't clobber personality flags on exec
Now that ppc32 implements address randomization it also wants to inherit
personality flags like ADDR_NO_RANDOMIZE across exec, for things like
`setarch ppc -R' to work. But the ppc32 version of SET_PERSONALITY
forcefully sets PER_LINUX, clearing all personality flags. So be
careful about preserving the flags.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Arjan van de Ven [Tue, 21 Apr 2009 20:32:54 +0000 (13:32 -0700)]
driver synchronization: make scsi_wait_scan more advanced
There is currently only one way for userspace to say "wait for my storage
device to get ready for the modules I just loaded": to load the
scsi_wait_scan module. Expectations of userspace are that once this
module is loaded, all the (storage) devices for which the drivers
were loaded before the module load are present.
Now, there are some issues with the implementation, and the async
stuff got caught in the middle of this: The existing code only
waits for the scsy async probing to finish, but it did not take
into account at all that probing might not have begun yet.
(Russell ran into this problem on his computer and the fix works for him)
This patch fixes this more thoroughly than the previous "fix", which
had some bad side effects (namely, for kernel code that wanted to wait for
the scsi scan it would also do an async sync, which would deadlock if you did
it from async context already.. there's a report about that on lkml):
The patch makes the module first wait for all device driver probes, and then it
will wait for the scsi parallel scan to finish.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Tested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Tue, 21 Apr 2009 22:00:29 +0000 (23:00 +0100)]
PERCPU: Collect the DECLARE/DEFINE declarations together
Collect the DECLARE/DEFINE declarations together in linux/percpu-defs.h so
that they're in one place, and give them descriptive comments, particularly
the SHARED_ALIGNED variant.
It would be nice to collect these in linux/percpu.h, but that's not possible
without sorting out the severe #include recursion between the x86 arch headers
and the general headers (and possibly other arches too).
Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Tue, 21 Apr 2009 22:00:24 +0000 (23:00 +0100)]
FRV: Fix the section attribute on UP DECLARE_PER_CPU()
In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU()
does not agree with that specified by DEFINE_PER_CPU(). This means that
architectures that have a small data section references relative to a base
register may throw up linkage errors due to too great a displacement between
where the base register points and the per-CPU variable.
On FRV, the .h declaration says that the variable is in the .sdata section, but
the .c definition says it's actually in the .data section. The linker throws
up the following errors:
kernel/built-in.o: In function `release_task':
kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o
kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o
To fix this, DECLARE_PER_CPU() should simply apply the same section attribute
as does DEFINE_PER_CPU(). However, this is made slightly more complex by
virtue of the fact that there are several variants on DEFINE, so these need to
be matched by variants on DECLARE.
Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: fix btrfs fallocate oops and deadlock
Btrfs: use the right node in reada_for_balance
Btrfs: fix oops on page->mapping->host during writepage
Btrfs: add a priority queue to the async thread helpers
Btrfs: use WRITE_SYNC for synchronous writes
Kumar Gala [Wed, 15 Apr 2009 21:33:08 +0000 (16:33 -0500)]
powerpc/85xx: Added SMP defconfig
Since the vast majority of 85xx platforms are UP we introduce a new SMP
config for the few platforms that have more than one core. Beyond
CONFIG_SMP=y and its dependencies this should be identical to
mpc85xx_defconfig.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
A few issues wrt DMA were uncovered when using the driver with swiotlb.
- driver should not use memory after it has been mapped
- iwl3945's RX queue management cannot use all of iwlagn because
the size of the RX buffer is different. Revert back to using
iwl3945 specific routines that map/unmap memory.
- no need to "dma_syn_single_range_for_cpu" followed by pci_unmap_single,
we can just call pci_unmap_single initially
- only map the memory area that will be used by device. this is especially
relevant to the mapping of iwl_cmd. we should not map the entire
structure because the meta data at the beginning of structure contains
the address to be used later for unmapping. If the address to be used for
unmapping is stored in mapped data it creates a problem.
- ensure that _if_ memory needs to be modified after it is mapped that we
call _sync_single_for_cpu first, and then release it back to device with
_sync_single_for_device
- we mapped the wrong length of data for host commands, with mapped length
differing with length provided to device, fix that.
Thanks to Jason Andryuk <jandryuk@gmail.com> for significant bisecting
help to find these issues.
This fixes http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1964
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Jason Andryuk <jandryuk@gmail.com> Tested-by: Ben Gamari <bgamari@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
When debugging TX issues it is helpful to know the seq nr of the
frame being transmitted. The seq nr is printed as part of ucode's
log informing us which frame is being processed. Having this information
printed in driver log makes it easy to match activities between driver
and firmware.
Also make possible to print TX flags directly. These are already printed
as part of entire TX command, but having it printed directly in cpu format
makes it easier to look at.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch fixes a build warning in mwl8.c.
(Marvell TOPDOG wireless driver)
The warning it fixes is: "large integer implicitly truncated to unsigned type."
The rx_ctrl member of the mwl8k_rx_desc struct is 8 bit (__u8 ), whereas trying
to assign it a 32 bit value (which is returned from cpu_to_le32())
causes the compiler to issue
a truncation warning.
Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Johannes Berg [Mon, 20 Apr 2009 23:36:59 +0000 (01:36 +0200)]
mac80211: fix alignment calculation bug
When checking whether or not a given frame needs to be
moved to be properly aligned to a 4-byte boundary, we
use & 4 which wasn't intended, this code should check
the lowest two bits.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
It is expected that config interface will always succeed as mac80211
will only request what driver supports. The exception here is when a
device has rfkill enabled. At this time the rfkill state is unknown to
mac80211 and config interface can fail. When this happens we deal with
this error instead of printing a WARN.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Jay Sternberg [Mon, 20 Apr 2009 21:36:54 +0000 (14:36 -0700)]
iwlwifi: fix EEPROM validation mask to include OTP only devices
Fix the bug where some revisions of 6000 series hardware cannot
be used. Later versions of 6000 series have the EEPROM replaced by
OTP. For these devices to be used we need to expand valid EEPROM mask.
Signed-off-by: Jay Sternberg <jay.e.sternberg@linux.intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Commit a6dc60f8975ad96d162915e07703a4439c80dcf0 ("vmscan: rename
sc.may_swap to may_unmap") removed the may_swap flag, but memcg had used
it as a flag for "we need to use swap?", as the name indicate.
And in the current implementation, memcg cannot reclaim mapped file
caches when mem+swap hits the limit.
re-introduce may_swap flag and handle it at get_scan_ratio(). This
patch doesn't influence any scan_control users other than memcg.
Noticing that every caller of mpt_config has its CONFIGPARMS struct
declared on the stack and thus the &pCfg->timer is always on the stack I
changed init_timer() to init_timer_on_stack() and it seems to have shut
up.....
Cc: "Moore, Eric Dean" <Eric.Moore@lsil.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: "Desai, Kashyap" <Kashyap.Desai@lsi.com> Cc: <stable@kernel.org> [2.6.29.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robin Holt [Tue, 21 Apr 2009 19:24:53 +0000 (12:24 -0700)]
sgi-xp/sgi-gru: allow modules to load on non-uv systems
For an upcoming distro release, we need to have the xp kernel module
loadable even when not on UV equipment. The xpc module will not load.
This will allow one set of modules dependent upon xp to work on either UV
or non-UV equipment.
Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
WANG Cong [Tue, 21 Apr 2009 19:24:52 +0000 (12:24 -0700)]
uml: kill a kconfig warning
Got this warning from Kconfig:
boolean symbol INPUT tested for 'm'? test forced to 'n'
because INPUT is tristate, not bool.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Tue, 21 Apr 2009 19:24:51 +0000 (12:24 -0700)]
frv: insert PCI root bus resources for the MB93090 devel motherboard
Insert PCI root bus resources for the FRV-based MB93090 development kit
motherboard. This is required because the CPU's window onto the PCI bus
address space is considerably smaller than the CPU's full address space
and non-PCI devices lie outside of the PCI window that we might want to
access.
Without this patch, the PCI root bus uses the platform-level bus
resources, and these are then confined to the PCI window, thus making
platform_device_add() reject devices outside of this window.
Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Halasa [Tue, 21 Apr 2009 19:24:49 +0000 (12:24 -0700)]
rtc-cmos: fix printk output
With no IRQ available/defined, RTC-CMOS driver prints something like:
rtc0: alarms up to one no, y3k, 114 bytes nvram
^^^^
I guess the following is a bit easier to understand:
rtc0: no alarms, y3k, 114 bytes nvram
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is a doc-only patch which I hope will reduce the number of
spi_master controller driver patches starting out with a common
implementation bug.
(As in: almost every spi_master driver I see starts out with its
version of this bug. Sigh.)
It just re-emphasizes that the setup() method may be called for one
device while a transfer is active on another ... which means that most
driver implementations shouldn't touch any registers.
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>
Robert P. J. Day [Tue, 21 Apr 2009 19:24:47 +0000 (12:24 -0700)]
MAINTAINERS: add a more searchable string for the H8300 architecture.
Add a parenthesized string of "H8300" for more convenient searchability
in the MAINTAINERS file.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matt Mackall [Tue, 21 Apr 2009 19:24:47 +0000 (12:24 -0700)]
MAINTAINERS: add Matt Mackall to embedded maintainers
Impact: make more work for myself
Signed-off-by: Matt Mackall <mpm@selenic.com> Cc: David Woodhouse <dwmw2@infradead.org> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On line 944 the return value of flush() is considered as a boolean,
but limit reaches -1 upon timeout which evaluates to true.
On 540, 594, 720 the same occurs for wait_ssp_rx_stall()
On 536 the same occurs for wait_dma_channel_stop()
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Eric Miao <eric.miao@marvell.com> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Tue, 21 Apr 2009 19:24:45 +0000 (12:24 -0700)]
MAINTAINERS: update KMEMTRACE pattern after file rename
Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Daniel Ribeiro [Tue, 21 Apr 2009 19:24:43 +0000 (12:24 -0700)]
pxa2xx_spi: restore DRCMR on resume
If DMA is enabled, any spi_sync call after suspend/resume would block
forever, because DRCMR is lost on suspend. This patch restores DRCMR to
the same values set by probe.
Signed-off-by: Daniel Ribeiro <drwyrm@gmail.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>
drivers/input/serio/hp_sdc.c: fix crash when removing hp_sdc module
On parisc machines, which don't have HIL, removing the hp_sdc module
panics the kernel. Fix this by returning early in hp_sdc_exit() if no HP
SDC controller was found.
Add functionality to probe for the hp_sdc_mlc kernel module (which takes
care of the upper layer HIL functionality on parisc) after two seconds.
This is needed to get all the other HIL drivers (keyboard / mouse/ ..)
drivers automatically loaded by udev later as well.
Signed-off-by: Helge Deller <deller@gmx.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Frans Pop <elendil@planet.nl> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Akinobu Mita [Tue, 21 Apr 2009 19:24:05 +0000 (12:24 -0700)]
hugetlbfs: return negative error code for bad mount option
This fixes the following BUG:
# mount -o size=MM -t hugetlbfs none /huge
hugetlbfs: Bad value 'MM' for mount option 'size=MM'
------------[ cut here ]------------
kernel BUG at fs/super.c:996!
Due to
BUG_ON(!mnt->mnt_sb);
in vfs_kern_mount().
Also, remove unused #include <linux/quotaops.h>
Cc: William Irwin <wli@holomorphy.com> Cc: <stable@kernel.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bela Lubkin noticed that the statistics for send IPMB and LAN commands
in the IPMI driver could be incremented even if an error occurred. Move
the increments to the proper place to avoid this.
Also add some statistics for retransmissions that failed, and some little
helper functions to neaten up the code a little.
Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: Bela Lubkin <blubkin@vmware.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The IPMI driver would attempt to use the event buffer even if that
didn't exist on the BMC. This patch modified the IPMI driver to check
for the event buffer's existence before trying to use it.
Magnus Damm [Tue, 21 Apr 2009 19:24:02 +0000 (12:24 -0700)]
clocksource: add enable() and disable() callbacks
Add enable() and disable() callbacks for clocksources.
This allows us to put unused clocksources in power save mode. The
functions clocksource_enable() and clocksource_disable() wrap the
callbacks and are inserted in the timekeeping code to enable before use
and disable after switching to a new clocksource.
Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
pxafb: lcsr1 is unused without CONFIG_FB_PXA_OVERLAY
Fixes the warning:
drivers/video/pxafb.c: In function 'pxafb_handle_irq':
drivers/video/pxafb.c:1442: warning: unused variable 'lcsr1'
[akpm@linux-foundation.org: save an ifdef] Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Eric Miao <eric.miao@marvell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Timur Tabi [Mon, 20 Apr 2009 15:54:35 +0000 (10:54 -0500)]
powerpc: don't disable SATA interrupts on Freescale MPC8610 HPCD
The ULI 1575 PCI quirk function for the Freescale MPC8610 HPCD was disabling
the SATA INTx interrupt, even when SATA support was enabled. This was safe,
because the SATA driver re-enabled it. But with commit a5bfc471 ("ahci: drop
intx manipulation on msi enable"), the driver no longer does this, and so SATA
support on the 8610 HPCD is broken.
The original quirk function disabled INTx because it caused some other
interrupt problem during early development on this board, but no one remembers
any more what that problem was, and it doesn't seem to occur any more.
Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Jean Delvare [Tue, 21 Apr 2009 19:47:22 +0000 (21:47 +0200)]
go7007: Convert to the new i2c device binding model
Move the go7007 driver away from the legacy i2c binding model, which
is going away really soon now.
The I2C addresses of the audio and video chips in s2250-board didn't
look quite right, apparently they were left-aligned values when Linux
wants right-aligned values, so I fixed them too.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Greg Kroah-Hartman <gregkh@suse.de>
Chris Mason [Tue, 21 Apr 2009 15:53:38 +0000 (11:53 -0400)]
Btrfs: fix btrfs fallocate oops and deadlock
Btrfs fallocate was incorrectly starting a transaction with a lock held
on the extent_io tree for the file, which could deadlock. Strictly
speaking it was using join_transaction which would be safe, but it is better
to move the transaction outside of the lock.
When preallocated extents are overwritten, btrfs_mark_buffer_dirty was
being called on an unlocked buffer. This was triggering an assertion and
oops because the lock is supposed to be held.
The bug was calling btrfs_mark_buffer_dirty on a leaf after btrfs_del_item had
been run. btrfs_del_item takes care of dirtying things, so the solution is a
to skip the btrfs_mark_buffer_dirty call in this case.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
GFS2: Fix page_mkwrite() return code
GFS2: Clear dirty bit at end of inode glock sync
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
reiserfs: fix j_last_flush_trans_id type
fs: Mark get_filesystem_list() as __init function.
kill vfs_stat_fd / vfs_lstat_fd
Separate out common fstatat code into vfs_fstatat
ecryptfs: use memdup_user()
ncpfs: use memdup_user()
xfs: use memdup_user()
sysfs: use memdup_user()
btrfs: use memdup_user()
xattr: use memdup_user()
autofs4: use memchr() in invalid_string()
Documentation/filesystems: remove out of date reference to BKL being held
Fix i_mutex vs. readdir handling in nfsd
fs/compat_ioctl: fix build when !BLOCK
Fix autofs_expire()
No need for crossing to mountpoint in audit_tag_tree()
Safer nfsd_cross_mnt()
Touch all affected namespaces on propagation of mount
Fix AUTOFS_DEV_IOCTL_REQUESTER_CMD
NFS: Fix the XDR iovec calculation in nfs3_xdr_setaclargs
Commit ae46141ff08f1965b17c531b571953c39ce8b9e2 (NFSv3: Fix posix ACL code)
introduces a bug in the calculation of the XDR header iovec. In the case
where we are inlining the acls, we need to adjust the length of the iovec
req->rq_svec, in addition to adjusting the total buffer length.
Roland Dreier [Mon, 20 Apr 2009 18:32:08 +0000 (18:32 +0000)]
mlx4_en: Fix cleanup if workqueue create in mlx4_en_add() fails
If creating a workqueue fails, don't jump to the error path where that
same workqueue is destroyed, since destroy_workqueue() can't handle a
NULL pointer.
This was spotted by the Coverity checker (CID 2617).
Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / karo-tx-linux.git / log