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2010-03-09powerpc: Fix SMP build with disabled CPU hotplugging.Adam Lackorzynski
Compiling 2.6.33 with SMP enabled and HOTPLUG_CPU disabled gives me the following link errors: LD init/built-in.o LD .tmp_vmlinux1 arch/powerpc/platforms/built-in.o: In function `.smp_xics_setup_cpu': smp.c:(.devinit.text+0x88): undefined reference to `.set_cpu_current_state' smp.c:(.devinit.text+0x94): undefined reference to `.set_default_offline_state' arch/powerpc/platforms/built-in.o: In function `.smp_pSeries_kick_cpu': smp.c:(.devinit.text+0x13c): undefined reference to `.set_preferred_offline_state' smp.c:(.devinit.text+0x148): undefined reference to `.get_cpu_current_state' smp.c:(.devinit.text+0x1a8): undefined reference to `.get_cpu_current_state' make: *** [.tmp_vmlinux1] Error 1 The following change fixes that for me and seems to work as expected. Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-03-09powerpc: Dynamically allocate pacasMichael Ellerman
On 64-bit kernels we currently have a 512 byte struct paca_struct for each cpu (usually just called "the paca"). Currently they are statically allocated, which means a kernel built for a large number of cpus will waste a lot of space if it's booted on a machine with few cpus. We can avoid that by only allocating the number of pacas we need at boot. However this is complicated by the fact that we need to access the paca before we know how many cpus there are in the system. The solution is to dynamically allocate enough space for NR_CPUS pacas, but then later in boot when we know how many cpus we have, we free any unused pacas. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-03-09Merge commit 'kumar/next' into mergeBenjamin Herrenschmidt
2010-03-08Linux 2.6.34-rc1Linus Torvalds
2010-03-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* 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. ...
2010-03-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds
* 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
2010-03-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/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 ...
2010-03-08Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds
* '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
2010-03-08FS-Cache: Remove the EXPERIMENTAL flagChristian Kujau
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>
2010-03-08[WATCHDOG] i6300esb.c: change platform_driver to pci_driverWim Van Sebroeck
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>
2010-03-08[S390] smsgiucv_app: deliver z/VM CP special messages (SMSG) as ueventsHendrik Brueckner
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>
2010-03-08[S390] smsgiucv: declare char pointers as "const"Hendrik Brueckner
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>
2010-03-08[S390] dasd: automatic recognition of read-only devicesStefan Weinhuber
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>
2010-03-08[S390] remove unused qdio flags in zfcp and qethUrsula Braun
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>
2010-03-08[S390] Cleanup xtime usageJohn Stultz
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>
2010-03-08[S390] qdio: add missing bracketUrsula Braun
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>
2010-03-08[S390] cio: fix init_count in case of recognition after steal lockSebastian Ott
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>
2010-03-08[S390] dasd: security and PSF update patch for EMC CKD ioctlNigel Hislop
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>
2010-03-08[S390] hvc_iucv: allocate memory buffers for IUCV in zone DMAHendrik Brueckner
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>
2010-03-08[S390] uaccess: make sure copy_from_user_overflow is builtinHeiko Carstens
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>
2010-03-08[WATCHDOG] i6300esb: fix unlock register withWim Van Sebroeck
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>
2010-03-08Merge branch 'topic/misc' into for-linusTakashi Iwai
2010-03-08Merge branch 'topic/asoc' into for-linusTakashi Iwai
2010-03-08Merge branch 'topic/hda' into for-linusTakashi Iwai
2010-03-08ALSA: hdmi - show debug message on changing audio infoframeWu Fengguang
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>
2010-03-08ALSA: hdmi - merge common code for intelhdmi and nvhdmiWu Fengguang
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>
2010-03-07msi-laptop: depends on RFKILLRandy Dunlap
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>
2010-03-07msi-laptop: Detect 3G device exists by standard ec commandLee, Chun-Yi
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>
2010-03-07msi-laptop: Add resume method for set the SCM load againLee, Chun-Yi
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>
2010-03-07msi-laptop: Support some MSI 3G netbook that is need load SCMLee, Chun-Yi
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>
2010-03-07msi-laptop: Add threeg sysfs file for support query 3G state by standard ↵Lee, Chun-Yi
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>
2010-03-07msi-laptop: Support standard ec 66/62 command on MSI notebook and nebookLee, Chun-Yi
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>
2010-03-07Driver core: create lock/unlock functions for struct deviceGreg Kroah-Hartman
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>
2010-03-07sysfs: fix for thinko with sysfs_bin_attr_init()Stephen Rothwell
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>
2010-03-07sysfs: Kill unused sysfs_sb variable.Eric W. Biederman
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>
2010-03-07sysfs: Pass super_block to sysfs_get_inodeEric W. Biederman
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>
2010-03-07driver core: Use sysfs_rename_link in device_renameEric W. Biederman
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>
2010-03-07sysfs: Implement sysfs_rename_linkEric W. Biederman
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>
2010-03-07sysfs: Pack sysfs_dirent more tightly.Eric W. Biederman
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>
2010-03-07sysfs: Serialize updates to the vfs inodeEric W. Biederman
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>
2010-03-07sysfs: windfarm: init sysfs attributesJohannes Berg
This is required for lockdep. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on module dynamic attributesEric W. Biederman
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>
2010-03-07sysfs: Document sysfs_attr_init and sysfs_bin_attr_initEric W. Biederman
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>
2010-03-07sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on dynamic attributesEric W. Biederman
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>
2010-03-07sysfs: Use one lockdep class per sysfs attribute.Eric W. Biederman
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>
2010-03-07sysfs: Only take active references on attributes.Eric W. Biederman
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>
2010-03-07sysfs: Remove sysfs_get/put_active_twoEric W. Biederman
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>
2010-03-07Driver core: Fix first line of kernel-doc for a few functionsBen Hutchings
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>
2010-03-07UIO: Remove SMX Cryptengine driverHans J. Koch
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>
2010-03-07UIO: minor Kconfig fixesJohn Ogness
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>