J. Bruce Fields [Sat, 24 Apr 2010 19:35:43 +0000 (15:35 -0400)]
nfsd4: fix unlikely race in session replay case
In the replay case, the
renew_client(session->se_client);
happens after we've droppped the sessionid_lock, and without holding a
reference on the session; so there's nothing preventing the session
being freed before we get here.
Thanks to Benny Halevy for catching a bug in an earlier version of this
patch.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Acked-by: Benny Halevy <bhalevy@panasas.com>
J. Bruce Fields [Thu, 22 Apr 2010 21:04:25 +0000 (17:04 -0400)]
nfsd4: fix filehandle comment
Minor typos.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Dan Carpenter [Thu, 22 Apr 2010 09:30:59 +0000 (11:30 +0200)]
nfsd: potential ERR_PTR dereference on exp_export() error paths.
We "goto finish" from several places where "exp" is an ERR_PTR. Also I
changed the check for "fsid_key" so that it was consistent with the check
I added.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Wed, 21 Apr 2010 16:27:19 +0000 (12:27 -0400)]
nfsd4: complete enforcement of 4.1 op ordering
Enforce the rules about compound op ordering.
Motivated by implementing RECLAIM_COMPLETE, for which the client is
implicit in the current session, so it is important to ensure a
succesful SEQUENCE proceeds the RECLAIM_COMPLETE.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Mon, 8 Mar 2010 04:39:01 +0000 (23:39 -0500)]
nfsd4: allow 4.0 clients to change callback path
The rfc allows a client to change the callback parameters, but we didn't
previously implement it.
Teach the callbacks to rerun themselves (by placing themselves on a
workqueue) when they recognize that their rpc task has been killed and
that the callback connection has changed.
Then we can change the callback connection by setting up a new rpc
client, modifying the nfs4 client to point at it, waiting for any work
in progress to complete, and then shutting down the old client.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Mon, 8 Mar 2010 17:37:27 +0000 (12:37 -0500)]
nfsd4: rearrange cb data structures
Mainly I just want to separate the arguments used for setting up the tcp
client from the rest.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Thu, 4 Mar 2010 16:32:59 +0000 (11:32 -0500)]
nfsd4: cl_count is unused
Now that the shutdown sequence guarantees callbacks are shut down before
the client is destroyed, we no longer have a use for cl_count.
We'll probably reinstate a reference count on the client some day, but
it will be held by users other than callbacks.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Wed, 3 Mar 2010 19:52:55 +0000 (14:52 -0500)]
nfsd4: don't sleep in lease-break callback
The NFSv4 server's fl_break callback can sleep (dropping the BKL), in
order to allocate a new rpc task to send a recall to the client.
As far as I can tell this doesn't cause any races in the current code,
but the analysis is difficult. Also, the sleep here may complicate the
move away from the BKL.
So, just schedule some work to do the job for us instead. The work will
later also prove useful for restarting a call after the callback
information is changed.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Mon, 19 Apr 2010 19:12:51 +0000 (15:12 -0400)]
nfsd4: indentation cleanup
Looks like a put-and-paste mistake.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Thu, 15 Apr 2010 19:11:09 +0000 (15:11 -0400)]
nfsd4: consistent session flag setting
We should clear these flags on any new create_session, not just on the
first one.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Mon, 22 Feb 2010 01:53:04 +0000 (17:53 -0800)]
nfsd4: remove probe task's reference on client
Any null probe rpc will be synchronously destroyed by the
rpc_shutdown_client() in expire_client(), so the rpc task cannot outlast
the nfs4 client. Therefore there's no need for that task to hold a
reference on the client.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Mon, 22 Feb 2010 01:51:53 +0000 (17:51 -0800)]
nfsd4: remove dprintk
I haven't found this useful.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Mon, 22 Feb 2010 01:41:19 +0000 (17:41 -0800)]
nfsd4: shutdown callbacks on expiry
Once we've expired the client, there's no further purpose to the
callbacks; go ahead and shut down the callback client rather than
waiting for the last reference to go.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Thu, 18 Feb 2010 16:27:24 +0000 (08:27 -0800)]
nfsd4: preallocate nfs4_rpc_args
Instead of allocating this small structure, just include it in the
delegation.
The nfsd4_callback structure isn't really necessary yet, but we plan to
add to it all the information necessary to perform a callback.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Tue, 30 Mar 2010 01:02:31 +0000 (21:02 -0400)]
svcrpc: don't hold sv_lock over svc_xprt_put()
svc_xprt_put() can call tcp_close(), which can sleep, so we shouldn't be
holding this lock.
In fact, only the xpt_list removal and the sv_tmpcnt decrement should
need the sv_lock here.
Reported-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Li Zefan [Thu, 11 Mar 2010 22:08:10 +0000 (14:08 -0800)]
sunrpc/cache: fix module refcnt leak in a failure path
Don't forget to release the module refcnt if seq_open() returns failure.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: J. Bruce Fields <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Jeff Layton [Fri, 19 Mar 2010 12:06:28 +0000 (08:06 -0400)]
nfsd: don't break lease while servicing a COMMIT
This is the second attempt to fix the problem whereby a COMMIT call
causes a lease break and triggers a possible deadlock.
The problem is that nfsd attempts to break a lease on a COMMIT call.
This triggers a delegation recall if the lease is held for a delegation.
If the client is the one holding the delegation and it's the same one on
which it's issuing the COMMIT, then it can't return that delegation
until the COMMIT is complete. But, nfsd won't complete the COMMIT until
the delegation is returned. The client and server are essentially
deadlocked until the state is marked bad (due to the client not
responding on the callback channel).
The first patch attempted to deal with this by eliminating the open of
the file altogether and simply had nfsd_commit pass a NULL file pointer
to the vfs_fsync_range. That would conflict with some work in progress
by Christoph Hellwig to clean up the fsync interface, so this patch
takes a different approach.
This declares a new NFSD_MAY_NOT_BREAK_LEASE access flag that indicates
to nfsd_open that it should not break any leases when opening the file,
and has nfsd_commit set that flag on the nfsd_open call.
For now, this patch leaves nfsd_commit opening the file with write
access since I'm not clear on what sort of access would be more
appropriate.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: stable@kernel.org
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
NeilBrown [Wed, 3 Feb 2010 06:31:31 +0000 (17:31 +1100)]
nfsd: factor out hash functions for export caches.
Both the _lookup and the _update functions for these two caches
independently calculate the hash of the key.
So factor out that code for improved reuse.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
NeilBrown [Wed, 3 Feb 2010 06:31:31 +0000 (17:31 +1100)]
sunrpc: never return expired entries in sunrpc_cache_lookup
If sunrpc_cache_lookup finds an expired entry, remove it from
the cache and return a freshly created non-VALID entry instead.
This ensures that we only ever get a usable entry, or an
entry that will become usable once an update arrives.
i.e. we will never need to repeat the lookup.
This allows us to remove the 'is_expired' test from cache_check
(i.e. from cache_is_valid). cache_check should never get an expired
entry as 'lookup' will never return one. If it does happen - due to
inconvenient timing - then just accept it as still valid, it won't be
very much past it's use-by date.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
NeilBrown [Wed, 3 Feb 2010 06:31:31 +0000 (17:31 +1100)]
sunrpc/cache: factor out cache_is_expired
This removes a tiny bit of code duplication, but more important
prepares for following patch which will perform the expiry check in
cache_lookup and the rest of the validity check in cache_check.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
NeilBrown [Wed, 3 Feb 2010 06:31:31 +0000 (17:31 +1100)]
sunrpc: don't keep expired entries in the auth caches.
currently expired entries remain in the auth caches as long
as there is a reference.
This was needed long ago when the auth_domain cache used the same
cache infrastructure. But since that (being a very different sort
of cache) was separated, this test is no longer needed.
So remove the test on refcnt and tidy up the surrounding code.
This allows the cache_dequeue call (which needed to be there to
drop a potentially awkward reference) can be moved outside of the
spinlock which is a better place for it.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
J. Bruce Fields [Tue, 9 Mar 2010 22:22:08 +0000 (17:22 -0500)]
Merge commit 'v2.6.34-rc1' into for-2.6.35-incoming
Linus Torvalds [Mon, 8 Mar 2010 18:45:44 +0000 (10:45 -0800)]
Linux 2.6.34-rc1
Linus Torvalds [Mon, 8 Mar 2010 18:17:20 +0000 (10:17 -0800)]
Merge git://git./linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (62 commits)
msi-laptop: depends on RFKILL
msi-laptop: Detect 3G device exists by standard ec command
msi-laptop: Add resume method for set the SCM load again
msi-laptop: Support some MSI 3G netbook that is need load SCM
msi-laptop: Add threeg sysfs file for support query 3G state by standard 66/62 ec command
msi-laptop: Support standard ec 66/62 command on MSI notebook and nebook
Driver core: create lock/unlock functions for struct device
sysfs: fix for thinko with sysfs_bin_attr_init()
sysfs: Kill unused sysfs_sb variable.
sysfs: Pass super_block to sysfs_get_inode
driver core: Use sysfs_rename_link in device_rename
sysfs: Implement sysfs_rename_link
sysfs: Pack sysfs_dirent more tightly.
sysfs: Serialize updates to the vfs inode
sysfs: windfarm: init sysfs attributes
sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on module dynamic attributes
sysfs: Document sysfs_attr_init and sysfs_bin_attr_init
sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on dynamic attributes
sysfs: Use one lockdep class per sysfs attribute.
sysfs: Only take active references on attributes.
...
Linus Torvalds [Mon, 8 Mar 2010 15:35:30 +0000 (07:35 -0800)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] i6300esb.c: change platform_driver to pci_driver
[WATCHDOG] i6300esb: fix unlock register with
[WATCHDOG] drivers/watchdog/wdt.c:wdt_ioctl(): make `ident' non-static
[WATCHDOG] change reboot_notifier to platform-shutdown method.
[WATCHDOG] watchdog_info constify
[WATCHDOG] gef_wdt: Author corrections following split of GE Fanuc joint venture
[WATCHDOG] iTCO_wdt: clean up probe(), modify err msg
[WATCHDOG] ep93xx: watchdog timer driver for TS-72xx SBCs cleanup
[WATCHDOG] support for max63xx watchdog timer chips
[WATCHDOG] ep93xx: added platform side support for TS-72xx WDT driver
[WATCHDOG] ep93xx: implemented watchdog timer driver for TS-72xx SBCs
Linus Torvalds [Mon, 8 Mar 2010 15:34:26 +0000 (07:34 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (26 commits)
ALSA: hdmi - show debug message on changing audio infoframe
ALSA: hdmi - merge common code for intelhdmi and nvhdmi
ALSA: hda - Add ASRock mobo to MSI blacklist
ALSA: hda: uninitialized variable fix
ALSA: hda: Use LPIB for a Biostar Microtech board
ALSA: usb/audio.h: Fix field order
ALSA: fix jazz16 compile (udelay)
ALSA: hda: Use LPIB for Dell Latitude 131L
ALSA: hda - Build hda_eld into snd-hda-codec module
ALSA: hda - Support NVIDIA MCP89 and GT21x hdmi audio
ALSA: hda - Support max codecs to 8 for nvidia hda controller
ALSA: riptide: clean up while loop
ALSA: usbaudio - remove debug "SAMPLE BYTES" printk line
ALSA: timer - pass real event in snd_timer_notify1() to instance callback
ALSA: oxygen: change || to &&
ALSA: opti92x: use PnP data to select Master Control port
ASoC: fix ak4104 register array access
ASoC: soc_pcm_open: Add missing bailout tag
ALSA: usbaudio: Fix wrong bitrate for Creative Creative VF0470 Live Cam
ALSA: ua101: removing debugging code
...
Linus Torvalds [Mon, 8 Mar 2010 15:33:46 +0000 (07:33 -0800)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] smsgiucv_app: deliver z/VM CP special messages (SMSG) as uevents
[S390] smsgiucv: declare char pointers as "const"
[S390] dasd: automatic recognition of read-only devices
[S390] remove unused qdio flags in zfcp and qeth
[S390] Cleanup xtime usage
[S390] qdio: add missing bracket
[S390] cio: fix init_count in case of recognition after steal lock
[S390] dasd: security and PSF update patch for EMC CKD ioctl
[S390] hvc_iucv: allocate memory buffers for IUCV in zone DMA
[S390] uaccess: make sure copy_from_user_overflow is builtin
Christian Kujau [Mon, 8 Mar 2010 15:03:09 +0000 (15:03 +0000)]
FS-Cache: Remove the EXPERIMENTAL flag
Remove the EXPERIMENTAL flag from FS-Cache so that Ubuntu can make use of the
facility.
Signed-off-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wim Van Sebroeck [Mon, 8 Mar 2010 13:48:01 +0000 (13:48 +0000)]
[WATCHDOG] i6300esb.c: change platform_driver to pci_driver
Since the intel 6300esb platform uses a dedicated PCI ID for
it's watchdog timer (00:1d.4), it's better and easier to have
this as a pci_driver.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Hendrik Brueckner [Mon, 8 Mar 2010 11:26:26 +0000 (12:26 +0100)]
[S390] smsgiucv_app: deliver z/VM CP special messages (SMSG) as uevents
The smsgiucv_app driver registers a callback with the smsgiucv driver
to receive z/VM CP special messages (SMSG) starting with "APP".
When the callback is called for special messages, the driver creates
an uevent for the received message. The uevent consists of additional
environment data containing the message prefix ("APP"), message sender,
and message content.
udev rules can be used to trigger application specific actions through
matching the content or sender of the special message.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Hendrik Brueckner [Mon, 8 Mar 2010 11:26:25 +0000 (12:26 +0100)]
[S390] smsgiucv: declare char pointers as "const"
Declare the smsgiucv prefix char pointer as "const" and use
use const char pointers in callback functions.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Weinhuber [Mon, 8 Mar 2010 11:26:24 +0000 (12:26 +0100)]
[S390] dasd: automatic recognition of read-only devices
In z/VM it is possible to attach a device as read-only. To prevent
unintentional write requests and subsequent I/O errors, we can detect
this configuration using the z/VM DIAG 210 interface and set the
respective linux block device to read-only as well.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Ursula Braun [Mon, 8 Mar 2010 11:25:20 +0000 (12:25 +0100)]
[S390] remove unused qdio flags in zfcp and qeth
zfcp and qeth are setting flags for the qdio-layer, but these flags
are not used in qdio. Patch removes the flag definitions from qdio
and their settings in zfcp and qeth.
Cc: Jan Glauber <jang@linux.vnet.ibm.com>
Cc: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
John Stultz [Mon, 8 Mar 2010 11:25:19 +0000 (12:25 +0100)]
[S390] Cleanup xtime usage
This replaces direct xtime usage in the s390 arch with timekeeping accessors,
so we can further clean up the timekeeping core.
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Ursula Braun [Mon, 8 Mar 2010 11:25:18 +0000 (12:25 +0100)]
[S390] qdio: add missing bracket
Add a missing bracket to only log the outbound handler event in the
appropriate case.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Sebastian Ott [Mon, 8 Mar 2010 11:25:17 +0000 (12:25 +0100)]
[S390] cio: fix init_count in case of recognition after steal lock
After we try to steal a lock on a ccw device in boxed state,
we have to restart device recognition and potentially reprobing.
In this case ccw_device_init_count was erroneously decreased
twice. This patch fixes the issue.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Nigel Hislop [Mon, 8 Mar 2010 11:25:16 +0000 (12:25 +0100)]
[S390] dasd: security and PSF update patch for EMC CKD ioctl
Remove the PSF order/suborder check from the Symmetrix CKD dasd ioctl.
In exchange restrict the ioctl to CAP_SYS_ADMIN and CAP_SYS_RAWIO.
Signed-off-by: Nigel Hislop <hislop_nigel@emc.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Hendrik Brueckner [Mon, 8 Mar 2010 11:25:15 +0000 (12:25 +0100)]
[S390] hvc_iucv: allocate memory buffers for IUCV in zone DMA
The device driver must allocate memory for IUCV buffers with GFP_DMA,
because IUCV cannot address memory above 2GB (31bit addresses only).
Because the IUCV ignores the higher bits of the address, sending and
receiving IUCV data with this driver might cause memory corruptions.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 8 Mar 2010 11:25:14 +0000 (12:25 +0100)]
[S390] uaccess: make sure copy_from_user_overflow is builtin
If there is no in kernel image caller modules will suffer:
ERROR: "copy_from_user_overflow" [net/core/pktgen.ko] undefined!
ERROR: "copy_from_user_overflow" [net/can/can-raw.ko] undefined!
ERROR: "copy_from_user_overflow" [fs/cifs/cifs.ko] undefined!
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Wim Van Sebroeck [Mon, 8 Mar 2010 11:02:38 +0000 (11:02 +0000)]
[WATCHDOG] i6300esb: fix unlock register with
Before you can read or write from the i6300esb memeory mapped registers,
you need to unlock these. This is done by writing the magic numbers 0x80
and 0x86 to the reload register. The size of the reload register is 32bit
though.
Also binary 11 is hex 0x03 and not 0x11.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Takashi Iwai [Mon, 8 Mar 2010 08:35:50 +0000 (09:35 +0100)]
Merge branch 'topic/misc' into for-linus
Takashi Iwai [Mon, 8 Mar 2010 08:35:48 +0000 (09:35 +0100)]
Merge branch 'topic/asoc' into for-linus
Takashi Iwai [Mon, 8 Mar 2010 08:35:43 +0000 (09:35 +0100)]
Merge branch 'topic/hda' into for-linus
Wu Fengguang [Mon, 8 Mar 2010 02:45:38 +0000 (10:45 +0800)]
ALSA: hdmi - show debug message on changing audio infoframe
Also change printk level for the two others.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Wu Fengguang [Mon, 8 Mar 2010 02:44:23 +0000 (10:44 +0800)]
ALSA: hdmi - merge common code for intelhdmi and nvhdmi
Create patch_hdmi.c to hold common code from intelhdmi and nvhdmi.
For now the patch_hdmi.c file is simply included by patch_intelhdmi.c
and patch_nvhdmi.c, and does not represent a real codec.
There are no behavior changes to intelhdmi. However nvhdmi made several
changes when copying code out of intelhdmi, which are all reverted in
this patch. Wei Ni confirmed that the reverted code actually works fine.
Tested-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Randy Dunlap [Wed, 3 Feb 2010 22:24:28 +0000 (14:24 -0800)]
msi-laptop: depends on RFKILL
msi-laptop uses rfkill*() interfaces so it should depend on RFKILL.
msi-laptop.c:(.text+0x1fcd1b): undefined reference to `rfkill_alloc'
msi-laptop.c:(.text+0x1fcd76): undefined reference to `rfkill_register'
msi-laptop.c:(.text+0x1fcdc8): undefined reference to `rfkill_destroy'
msi-laptop.c:(.text+0x1fcdd9): undefined reference to `rfkill_unregister'
This repairs "msi-laptop: Detect 3G device exists by standard ec command",
which is in some gregkh tree.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Cc: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lee, Chun-Yi [Wed, 27 Jan 2010 04:23:00 +0000 (12:23 +0800)]
msi-laptop: Detect 3G device exists by standard ec command
Detect 3G device exists by standard ec command. Driver will not create the threeg sysfs
file and threeg rfkill interface if there have no internal 3G device in MSI notebook/netbook.
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lee, Chun-Yi [Tue, 26 Jan 2010 16:13:45 +0000 (00:13 +0800)]
msi-laptop: Add resume method for set the SCM load again
Implement the resume method for set the load SCM flag after system reusme.
Without this patch, the wifi function key on SCM model will back to BIOS
control mode then confuse with the userland software control.
e.g. MSI N034
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lee, Chun-Yi [Thu, 21 Jan 2010 16:15:59 +0000 (00:15 +0800)]
msi-laptop: Support some MSI 3G netbook that is need load SCM
Some MSI 3G netbook only have one fn key to control Wlan/Bluetooth/3G,
those netbook will load the SCM (windows app) to disable the original
Wlan/Bluetooth control by BIOS when user press fn key, then control
Wlan/Bluetooth/3G by SCM (software control by OS). Without SCM, user
cann't on/off 3G module on those 3G netbook.
On Linux, msi-laptop driver will do the same thing to disable the
original BIOS control, then might need use HAL or other userland
application to do the software control that simulate with SCM.
e.g. MSI N034 netbook
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lee, Chun-Yi [Sat, 9 Jan 2010 15:17:07 +0000 (23:17 +0800)]
msi-laptop: Add threeg sysfs file for support query 3G state by standard 66/62 ec command
Add threeg sysfs file for support query 3G state by standard 66/62 ec
command, the MSI standard ec interface supported this feature.
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lee, Chun-Yi [Sat, 9 Jan 2010 13:16:52 +0000 (21:16 +0800)]
msi-laptop: Support standard ec 66/62 command on MSI notebook and nebook
Suppport standard ec 66/62 command on MSI notebook and nebook. MSI
netbook and notebook already support 66/62 command, so, add new
get_state function, and put the old model to non-standard model, but
driver still support those old model.
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 17 Feb 2010 18:57:05 +0000 (10:57 -0800)]
Driver core: create lock/unlock functions for struct device
In the future, we are going to be changing the lock type for struct
device (once we get the lockdep infrastructure properly worked out) To
make that changeover easier, and to possibly burry the lock in a
different part of struct device, let's create some functions to lock and
unlock a device so that no out-of-core code needs to be changed in the
future.
This patch creates the device_lock/unlock/trylock() functions, and
converts all in-tree users to them.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Dave Young <hidave.darkstar@gmail.com>
Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Magnus Damm <damm@igel.co.jp>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Alex Chiang <achiang@hp.com>
Cc: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrew Patterson <andrew.patterson@hp.com>
Cc: Yu Zhao <yu.zhao@intel.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: CHENG Renquan <rqcheng@smu.edu.sg>
Cc: Oliver Neukum <oliver@neukum.org>
Cc: Frans Pop <elendil@planet.nl>
Cc: David Vrabel <david.vrabel@csr.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Stephen Rothwell [Mon, 1 Mar 2010 09:38:36 +0000 (20:38 +1100)]
sysfs: fix for thinko with sysfs_bin_attr_init()
After merging the final tree, today's linux-next build (powerpc
allyesconfig) failed like this:
drivers/pci/pci-sysfs.c: In function 'pci_create_legacy_files':
drivers/pci/pci-sysfs.c:645: error: lvalue required as unary '&' operand
drivers/pci/pci-sysfs.c:658: error: lvalue required as unary '&' operand
Caused by commit "sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on
dynamic attributes" interacting with commit "sysfs: Use one lockdep
class per sysfs attribute") both from the driver-core tree.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Sat, 13 Feb 2010 03:22:28 +0000 (19:22 -0800)]
sysfs: Kill unused sysfs_sb variable.
Now that there are no more users we can remove
the sysfs_sb variable.
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Sat, 13 Feb 2010 03:22:27 +0000 (19:22 -0800)]
sysfs: Pass super_block to sysfs_get_inode
Currently sysfs_get_inode magically returns an inode on
sysfs_sb. Make the super_block parameter explicit and
the code becomes clearer.
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Sat, 13 Feb 2010 03:22:26 +0000 (19:22 -0800)]
driver core: Use sysfs_rename_link in device_rename
Don't open code the renaming of symlinks in sysfs
instead use the new helper function sysfs_rename_link
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Sat, 13 Feb 2010 03:22:25 +0000 (19:22 -0800)]
sysfs: Implement sysfs_rename_link
Because of rename ordering problems we occassionally give false
warnings about invalid sysfs operations. So using sysfs_rename
create a sysfs_rename_link function that doesn't need strange
workarounds.
Cc: Benjamin Thery <benjamin.thery@bull.net>
Cc: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Sat, 13 Feb 2010 03:22:24 +0000 (19:22 -0800)]
sysfs: Pack sysfs_dirent more tightly.
Placing the 16bit s_mode between a pointer and a long doesn't pack well
especailly on 64bit where we wast 48 bits. So move s_mode and
declare it as a unsigned short. This is the sysfs backing store
after all we don't need fields extra large just in case someday
we want userspace to be able to use a larger value.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Sat, 13 Feb 2010 03:22:23 +0000 (19:22 -0800)]
sysfs: Serialize updates to the vfs inode
The vfs depends upon filesystem methods to update the
vfs inode. Sysfs adds to the normal number of places
where the vfs inode is updated by also updatng the
vfs inode in sysfs_refresh_inode.
Typically the inode mutex is used to serialize updates
to the vfs inode, but grabbing the inode mutex in
sysfs_permission and sysfs_getattr causes deadlocks,
because sometimes the vfs calls those operations with
the inode mutex held. Therefore sysfs can not use the
inode mutex to serial updates to the vfs inode.
The sysfs_mutex is acquired in all of the routines
where sysfs updates the vfs inode, and with a small
change we can consistently protext sysfs vfs inode
updates with the sysfs_mutex. To protect the sysfs
vfs inode updates with the sysfs_mutex simply requires
extending the scope of sysfs_mutex in sysfs_setattr
over inode_setattr, and over inode_change_ok (so we
have an unchanging inode when we perform the check).
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Johannes Berg [Sat, 20 Feb 2010 15:43:02 +0000 (16:43 +0100)]
sysfs: windfarm: init sysfs attributes
This is required for lockdep.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Fri, 12 Feb 2010 21:41:56 +0000 (13:41 -0800)]
sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on module dynamic attributes
A little more whack-a-mole annotating the dynamic sysfs attributes. I
had everything built into my earlier test kernel, and so I missed
these.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Fri, 12 Feb 2010 12:35:32 +0000 (04:35 -0800)]
sysfs: Document sysfs_attr_init and sysfs_bin_attr_init
I have added a new requirement to the external sysfs interface
that dynamically allocated sysfs attributes must call sysfs_attr_init
if lockdep is enabled. For the time being callying sysfs_attr_init
is only mandatory if lockdep is enabled, so we can live with a few
unconverted instances until we find them all. As this is part of
the public interface of sysfs it is a good idea to document these
pseudo functions so someone inspeciting the code can find out
what has happened.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Thu, 11 Feb 2010 23:23:05 +0000 (15:23 -0800)]
sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on dynamic attributes
These are the non-static sysfs attributes that exist on
my test machine. Fix them to use sysfs_attr_init or
sysfs_bin_attr_init as appropriate. It simply requires
making a sysfs attribute present to see this. So this
is a little bit tedious but otherwise not too bad.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Thu, 11 Feb 2010 23:21:53 +0000 (15:21 -0800)]
sysfs: Use one lockdep class per sysfs attribute.
Acknowledge that the logical sysfs rwsem has one instance per
sysfs attribute with different locking depencencies for different
attributes.
There is a sysfs idiom where writing to one sysfs file causes the
addition or removal of other sysfs files. Lumping all of the
sysfs attributes together in one lock class causes lockdep to
generate lots of false positives.
This introduces the requirement that non-static sysfs attributes
need to be initialized with sysfs_attr_init or sysfs_bin_attr_init.
Strictly speaking this requirement only exists when lockdep is
enabled, and when lockdep is enabled we get a bit fat warning
if this requirement is not met.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Thu, 11 Feb 2010 23:20:00 +0000 (15:20 -0800)]
sysfs: Only take active references on attributes.
If we exclude directories and symlinks from the set of sysfs
dirents where we need active references we are left with
sysfs attributes (binary or not).
- Tweak sysfs_deactivate to only do something on attributes
- Move lockdep initialization into sysfs_file_add_mode to
limit it to just attributes.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Thu, 11 Feb 2010 23:18:38 +0000 (15:18 -0800)]
sysfs: Remove sysfs_get/put_active_two
It turns out that holding an active reference on a directory is
pointless. The purpose of the active references are to allows us to
block when removing sysfs entries that have custom methods so we don't
remove modules while running modular code and to keep those custom
methods from accessing data structures after the files have been
removed. Further sysfs_remove_dir remove all elements in the
directory before removing the directory itself, so there is no chance
we will remove a directory with active children.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ben Hutchings [Sun, 14 Feb 2010 14:18:53 +0000 (14:18 +0000)]
Driver core: Fix first line of kernel-doc for a few functions
The function name must be followed by a space, hypen, space, and a
short description.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Hans J. Koch [Wed, 10 Feb 2010 19:12:42 +0000 (20:12 +0100)]
UIO: Remove SMX Cryptengine driver
Ben Nizette, the author of this driver, told me in a private mail that this
project has been cancelled. He suggested to remove the driver for now, and
will come back with a new version should the hardware really exist.
This patch completely removes the driver.
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
John Ogness [Thu, 11 Feb 2010 14:38:53 +0000 (15:38 +0100)]
UIO: minor Kconfig fixes
Two trivial fixes for the Userspace IO Kconfig file:
1) uio_sercos3 is a PCI driver, so let it depend on PCI.
2) "default n" under UIO_PCI_GENERIC is luxury since it is already the default.
Acked-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Hans J. Koch [Tue, 9 Feb 2010 19:13:49 +0000 (20:13 +0100)]
UIO: Add a driver for Hilscher netX-based fieldbus cards
This patch adds a Userspace IO driver for netX-based fieldbus cards by
Hilscher (see http://www.hilscher.com). ATM, cifX and comX cards are
supported. The userspace part for this driver is provided by Hilscher
and should come with the card.
The driver is in use for several months now and has been tested by
people at Hilscher and Linutronix.
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:56 +0000 (20:56 +0100)]
auxdisplay: move cfag12864bfb's probe function to .devinit.text
A pointer to cfag12864bfb_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Avuton Olrich <avuton@gmail.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:55 +0000 (20:56 +0100)]
media: move omap24xxcam's probe function to .devinit.text
A pointer to omap24xxcam_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Acked-by: Trilok Soni <soni.trilok@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:54 +0000 (20:56 +0100)]
w1: move omap_hdq's probe function to .devinit.text
A pointer to omap_hdq_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Stanley.Miao <stanley.miao@windriver.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Madhusudhan Chikkature <madhu.cr@ti.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:53 +0000 (20:56 +0100)]
i2c: move i2c_omap's probe function to .devinit.text
A pointer to omap_i2c_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: chandra shekhar <x0044955@ti.com>
Cc: Jason P Marini <jason.marini@gmail.com>
Cc: Syed Mohammed Khasim <x0khasim@ti.com>
Cc: Jarkko Nikula <jarkko.nikula@nokia.com>
Cc: Juha Yrjola <juha.yrjola@solidboot.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:52 +0000 (20:56 +0100)]
x86: move hp-wmi's probe function to .devinit.text
A pointer to hp_wmi_bios_setup is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Frans Pop <elendil@planet.nl>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:51 +0000 (20:56 +0100)]
platform-drivers: move probe to .devinit.text in drivers/video
A pointer to a probe callback is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: Alberto Mardegan <mardy@users.sourceforge.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andriy Skulysh <askulysh@gmail.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Frans Pop <elendil@planet.nl>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Helge Deller <deller@gmx.de>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Ian Molton <spyro@f2s.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Kaj-Michael Lang <milang@tal.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Magnus Damm <damm@igel.co.jp>
Cc: Martin Michlmayr <tbm@cyrius.com>
Cc: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Pavel Machek <pavel@suse.cz>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Roland Stigge <stigge@antcom.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vincent Sanders <vince@simtec.co.uk>
Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: James Simmons <jsimmons@infradead.org>
Acked-by: Peter Jones <pjones@redhat.com>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:50 +0000 (20:56 +0100)]
platform-drivers: move probe to .devinit.text in drivers/scsi
A pointer to a probe callback is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Dmitri Vorobiev <dmitri.vorobiev@movial.fi>
Cc: Henrik Kretzschmar <henne@nachtwindheim.de>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: peter fuerst <post@pfrst.de>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Thu, 4 Feb 2010 19:56:49 +0000 (20:56 +0100)]
platform-drivers: move probe to .devinit.text in arch/arm
A pointer to a probe callback is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Cc: Paul Sokolovsky <pmiscml@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Uwe Kleine-König [Tue, 26 Jan 2010 08:35:00 +0000 (09:35 +0100)]
Driver core: make struct platform_driver.id_table const
This fixes a warning on several pxa based machines:
arch/arm/mach-pxa/ssp.c:475: warning: initialization discards qualifiers from pointer target type
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Vikram Dhillon <dhillonv10@gmail.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Emese Revfy [Tue, 19 Jan 2010 01:58:23 +0000 (02:58 +0100)]
Driver core: Constify struct sysfs_ops in struct kobj_type
Constify struct sysfs_ops.
This is part of the ops structure constification
effort started by Arjan van de Ven et al.
Benefits of this constification:
* prevents modification of data that is shared
(referenced) by many other structure instances
at runtime
* detects/prevents accidental (but not intentional)
modification attempts on archs that enforce
read-only kernel data at runtime
* potentially better optimized code as the compiler
can assume that the const data cannot be changed
* the compiler/linker move const data into .rodata
and therefore exclude them from false sharing
Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: David Teigland <teigland@redhat.com>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 21 Jan 2010 23:07:59 +0000 (15:07 -0800)]
sysdev: fix up the probe/release attributes
These should be sysdev attributes, not class attributes. This patch
should resolve the problem.
Thanks to Stephen Rothwell for pointing out the problem.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Stefan Richter [Fri, 15 Jan 2010 12:23:51 +0000 (13:23 +0100)]
HOWTO: Updates on subsystem trees, patchwork, -next (vs. -mm)
One of the roles which -mm fulfilled some time ago (to offer an
integration testing ground) has been taken over by -next. This is still
news to Documentation/HOWTO, so mention it there.
Also add a word on how patchwork is used to track patches as they make
their way into subsystem trees. Remove some arbitrary links to
subsystem repositories; they can all be found in the MAINTAINERS
database.
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Emese Revfy [Thu, 31 Dec 2009 13:52:51 +0000 (14:52 +0100)]
kobject: Constify struct kset_uevent_ops
Constify struct kset_uevent_ops.
This is part of the ops structure constification
effort started by Arjan van de Ven et al.
Benefits of this constification:
* prevents modification of data that is shared
(referenced) by many other structure instances
at runtime
* detects/prevents accidental (but not intentional)
modification attempts on archs that enforce
read-only kernel data at runtime
* potentially better optimized code as the compiler
can assume that the const data cannot be changed
* the compiler/linker move const data into .rodata
and therefore exclude them from false sharing
Signed-off-by: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Luis R. Rodriguez [Thu, 14 Jan 2010 02:18:15 +0000 (21:18 -0500)]
driver-core: firmware_class: remove base.h header inclusion
base.h is used by base drivers for sharing internal structures.
Turns out firmware_class does not depend on it at all so remove it.
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Fri, 1 Jan 2010 22:43:53 +0000 (14:43 -0800)]
sysfs: Cache the last sysfs_dirent to improve readdir scalability v2
When sysfs_readdir stops short we now cache the next
sysfs_dirent to return to user space in filp->private_data.
There is no impact on the rest of sysfs by doing this and
in the common case it allows us to pick up exactly where
we left off with no seeking.
Additionally I drop and regrab the sysfs_mutex around
filldir to avoid a page fault abritrarily increasing the
hold time on the sysfs_mutex.
v2: Returned to using INT_MAX as the EOF condition.
seekdir is ambiguous unless all directory entries have
a unique f_pos value.
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14949
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kay Sievers [Thu, 14 Jan 2010 21:54:37 +0000 (22:54 +0100)]
Driver-Core: require valid action string in uevent trigger
No longer fall back to "add" and warn, but always require a valid
action-string written to the "uevent" file.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kay Sievers [Thu, 14 Jan 2010 21:49:39 +0000 (22:49 +0100)]
Driver-Core: disable /sbin/hotplug by default
No recent mainstream system uses the /sbin/hotplug fork-bomb any more.
Disable it by default to reflect how it is used these days.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kay Sievers [Thu, 14 Jan 2010 21:47:57 +0000 (22:47 +0100)]
Driver-Core: devtmpfs - remove EXPERIMENTAL and flush out the description
All major distros enable devtmpfs on recent systems, so remove
the EXPERIMENTAL flag, and make the description a bit more instructive.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kay Sievers [Wed, 13 Jan 2010 13:16:36 +0000 (14:16 +0100)]
Driver-Core: devtmpfs - reset inode permissions before unlinking
Before unlinking the inode, reset the current permissions of possible
references like hardlinks, so granted permissions can not be retained
across the device lifetime by creating hardlinks, in the unusual case
that there is a user-writable directory on the same filesystem.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:09 +0000 (12:48 +0100)]
driver core: Convert some drivers to CLASS_ATTR_STRING
Convert some drivers who export a single string as class attribute
to the new class_attr_string functions. This removes redundant
code all over.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:08 +0000 (12:48 +0100)]
driver core: Add class_attr_string for simple read-only string
Several drivers just export a static string as class attributes.
Use the new extensible attribute support to define a simple
CLASS_ATTR_STRING() macro for this.
This will allow to remove code from drivers in followon patches.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:07 +0000 (12:48 +0100)]
driver-core: Add attribute argument to class_attribute show/store
Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.
Also drivers can extend the attributes with own data fields
and use that in the low level function.
This makes the class attributes the same as sysdev_class attributes
and plain attributes.
This will allow further cleanups in drivers.
Full tree sweep converting all users.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Heiko Carstens [Fri, 12 Feb 2010 10:19:24 +0000 (11:19 +0100)]
sysdev: fix missing s390 conversion
In linux-next "sysdev: Pass attribute in sysdev_class attributes show/store"
forgot to convert one place in s390 code. Here is the missing part.
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:06 +0000 (12:48 +0100)]
sysdev: Fix type of sysdev class attribute in memory driver
This attribute is really a sysdev_class attribute, not a plain class attribute.
They are identical in layout currently, but this might not always be
the case.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:05 +0000 (12:48 +0100)]
sysdev: Add sysdev_create/remove_files
Allow to create/remove arrays of sysdev attributes
Just wrappers around sysfs_create/move_files
Will be used later to clean up some drivers.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:04 +0000 (12:48 +0100)]
sysdev: Use sysdev_class attribute arrays in node driver
Convert the node driver to sysdev_class attribute arrays. This
greatly cleans up the code and remove a lot of code.
Saves ~150 bytes of code on x86-64.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:03 +0000 (12:48 +0100)]
sysdev: Convert node driver
Use sysdev_class attribute arrays in node driver
Convert the node driver to sysdev_class attribute arrays. This
greatly cleans up the code and remove a lot of code.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:02 +0000 (12:48 +0100)]
sysfs: Add attribute array to sysdev classes
Add a attribute array that is automatically registered and unregistered
to struct sysdev_class. This is similar to what struct class has.
A lot of drivers add list of attributes, so it's better to do
this easily in the common sysdev layer.
This adds a new field to struct sysdev_class. I audited the
whole tree and there are no dynamically allocated sysdev classes,
so this is fully compatible.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:01 +0000 (12:48 +0100)]
sysfs: Add sysfs_add/remove_files utility functions
Adding/Removing a whole array of attributes is very common. Add a standard
utility function to do this with a simple function call, instead of
requiring drivers to open code this.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andi Kleen [Tue, 5 Jan 2010 11:48:00 +0000 (12:48 +0100)]
sysdev: Convert cpu driver sysdev class attributes
Using the new attribute argument convert the cpu driver class attributes
to carry the node state. Then use a shared function to do what a lot of
individual functions did before.
This eliminates an ugly macro.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>