Commit Graph

29192 Commits

Author SHA1 Message Date
Jaswinder Singh Rajput bd71b5f734 headers_check fix: linux/efs_fs_sb.h
fix the following 'make headers_check' warning:

  usr/include/linux/efs_fs_sb.h:49: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:47:07 +05:30
Jaswinder Singh Rajput 4144147081 headers_check fix: linux/edd.h
fix the following 'make headers_check' warning:

  usr/include/linux/edd.h:70: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:46:40 +05:30
Jaswinder Singh Rajput 57d1780fab headers_check fix: linux/dn.h
fix the following 'make headers_check' warning:

  usr/include/linux/dn.h:75: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:46:03 +05:30
Jaswinder Singh Rajput 37eb1f4c33 headers_check fix: linux/dlm_plock.h
fix the following 'make headers_check' warning:

  usr/include/linux/dlm_plock.h:25: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:45:32 +05:30
Jaswinder Singh Rajput 59e4cf19ed headers_check fix: linux/cgroupstats.h
fix the following 'make headers_check' warning:

  usr/include/linux/cgroupstats.h:31: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:44:41 +05:30
Jaswinder Singh Rajput 960066a919 headers_check fix: linux/cdrom.h
fix the following 'make headers_check' warning:

  usr/include/linux/cdrom.h:155: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:44:08 +05:30
Jaswinder Singh Rajput 9fa91d99bf headers_check fix: linux/capability.h
fix the following 'make headers_check' warning:

  usr/include/linux/capability.h:73: extern's make no sense in userspace

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:41:27 +05:30
Jaswinder Singh Rajput 4502b80e44 headers_check fix: linux/blktrace_api.h
fix the following 'make headers_check' warning:

  usr/include/linux/blktrace_api.h:96: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:40:35 +05:30
Jaswinder Singh Rajput 1da9ebd5ab headers_check fix: linux/bfs_fs.h
fix the following 'make headers_check' warning:

  usr/include/linux/bfs_fs.h:24: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:40:06 +05:30
Jaswinder Singh Rajput 5d461bfebe headers_check fix: linux/auto_fs4.h
fix the following 'make headers_check' warning:

  usr/include/linux/auto_fs4.h:132: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:39:42 +05:30
Jaswinder Singh Rajput f757f603f7 headers_check fix: linux/atmbr2684.h
fix the following 'make headers_check' warning:

  usr/include/linux/atmbr2684.h:88: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:39:08 +05:30
Jaswinder Singh Rajput 85c09569e5 headers_check fix: linux/atalk.h
fix the following 'make headers_check' warning:

  usr/include/linux/atalk.h:15: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:38:37 +05:30
Jaswinder Singh Rajput bd247b348a headers_check fix: linux/aio_abi.h
fix the following 'make headers_check' warning:

  usr/include/linux/aio_abi.h:58: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:38:03 +05:30
Jaswinder Singh Rajput 4c866d4440 headers_check fix: usb/gadgetfs.h
fix the following 'make headers_check' warning:

  usr/include/linux/usb/gadgetfs.h:21: include of <linux/types.h> is preferred over <asm/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:37:37 +05:30
Jaswinder Singh Rajput d815158569 headers_check fix: usb/cdc.h
fix the following 'make headers_check' warning:

  usr/include/linux/usb/cdc.h:50: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:37:05 +05:30
Jaswinder Singh Rajput 30f410a6d3 headers_check fix: tc_ematch/tc_em_text.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_ematch/tc_em_text.h:11: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:36:36 +05:30
Jaswinder Singh Rajput ac836c6f1b headers_check fix: tc_ematch/tc_em_nbyte.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_ematch/tc_em_nbyte.h:8: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:36:12 +05:30
Jaswinder Singh Rajput 9976007a13 headers_check fix: tc_ematch/tc_em_meta.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_ematch/tc_em_meta.h:18: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:35:46 +05:30
Jaswinder Singh Rajput ba3a51e3b8 headers_check fix: tc_ematch/tc_em_cmp.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_ematch/tc_em_cmp.h:8: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:35:22 +05:30
Jaswinder Singh Rajput 5dbbf3bcae headers_check fix: tc_act/tc_pedit.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_act/tc_pedit.h:19: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:34:34 +05:30
Jaswinder Singh Rajput 9c536d2758 headers_check fix: tc_act/tc_mirred.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_act/tc_mirred.h:16: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:34:04 +05:30
Jaswinder Singh Rajput 2d594c0c8a headers_check fix: tc_act/tc_gact.h
fix the following 'make headers_check' warning:

  usr/include/linux/tc_act/tc_gact.h:19: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:33:38 +05:30
Jaswinder Singh Rajput 550e978aa5 headers_check fix: spi/spidev.h
fix the following 'make headers_check' warning:

  usr/include/linux/spi/spidev.h:83: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:33:12 +05:30
Jaswinder Singh Rajput bcf74582af headers_check fix: raid/md_p.h
fix the following 'make headers_check' warning:

  usr/include/linux/raid/md_p.h:85: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:32:45 +05:30
Jaswinder Singh Rajput 03cf1e0c3b headers_check fix: nfsd/syscall.h
fix the following 'make headers_check' warnings:

  usr/include/linux/nfsd/syscall.h:12: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/linux/nfsd/syscall.h:104: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 23:30:42 +05:30
Jaswinder Singh Rajput 9e87b1e53f headers_check fix: nfsd/nfsfh.h
fix the following 'make headers_check' warnings:

  usr/include/linux/nfsd/nfsfh.h:17: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/linux/nfsd/nfsfh.h:28: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 20:04:03 +05:30
Jaswinder Singh Rajput 3187cedf15 headers_check fix: nfsd/export.h
fix the following 'make headers_check' warning:

  usr/include/linux/nfsd/export.h:13: include of <linux/types.h> is preferred over <asm/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 20:03:06 +05:30
Jaswinder Singh Rajput 9df27bab62 headers_check fix: netfilter/xt_conntrack.h
fix the following 'make headers_check' warning:

  usr/include/linux/netfilter/xt_conntrack.h:40: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 20:00:47 +05:30
Jaswinder Singh Rajput b852d36b86 headers_check fix: dvb/video.h
fix the following 'make headers_check' warnings:

  usr/include/linux/dvb/video.h:29: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/linux/dvb/video.h:102: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 19:59:53 +05:30
Jaswinder Singh Rajput 8996be9de9 headers_check fix: dvb/net.h
fix the following 'make headers_check' warnings:

  usr/include/linux/dvb/net.h:27: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/linux/dvb/net.h:31: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 19:58:00 +05:30
Jaswinder Singh Rajput de189f078e headers_check fix: dvb/frontend.h
fix the following 'make headers_check' warnings:

  usr/include/linux/dvb/frontend.h:29: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/linux/dvb/frontend.h:76: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 19:56:41 +05:30
Jaswinder Singh Rajput c86629c855 headers_check fix: dvb/dmx.h
fix the following 'make headers_check' warnings:

  usr/include/linux/dvb/dmx.h:27: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/linux/dvb/dmx.h:90: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 19:55:32 +05:30
Jaswinder Singh Rajput 15cf98ad29 headers_check fix: dvb/audio.h
fix the following 'make headers_check' warning:

  usr/include/linux/dvb/audio.h:133: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 19:53:38 +05:30
Jaswinder Singh Rajput 9d6aa4c7ec headers_check fix: can/bcm.h
fix the following 'make headers_check' warning:

  usr/include/linux/can/bcm.h:29: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-01-30 19:50:25 +05:30
Randy Dunlap 5872fb94f8 Documentation: move DMA-mapping.txt to Doc/PCI/
Move DMA-mapping.txt to Documentation/PCI/.

DMA-mapping.txt was supposed to be moved from Documentation/ to
Documentation/PCI/.  The 00-INDEX files in those two directories
were updated, along with a few other text files, but the file
itself somehow escaped being moved, so move it and update more
text files and source files with its new location.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
cc:	Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:19:29 -08:00
Linus Torvalds 0d28088496 Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6
* 'linux-next' of git://git.infradead.org/ubi-2.6:
  UBI: allow direct user-space I/O
  UBI: fix resource de-allocation
  UBI: remove unused variable
  UBI: use nicer 64-bit math
  UBI: add ioctl compatibility
  UBI: constify file operations
  UBI: allow all ioctls
  UBI: remove unnecessry header inclusion
  UBI: improve ioctl commentaries
  UBI: add ioctl for is_mapped operation
  UBI: add ioctl for unmap operation
  UBI: add ioctl for map operation
2009-01-29 18:12:58 -08:00
Davide Libenzi 9df04e1f25 epoll: drop max_user_instances and rely only on max_user_watches
Linus suggested to put limits where the money is, and max_user_watches
already does that w/out the need of max_user_instances.  That has the
advantage to mitigate the potential DoS while allowing pretty generous
default behavior.

Allowing top 4% of low memory (per user) to be allocated in epoll watches,
we have:

LOMEM    MAX_WATCHES (per user)
512MB    ~178000
1GB      ~356000
2GB      ~712000

A box with 512MB of lomem, will meet some challenge in hitting 180K
watches, socket buffers math teaches us.  No more max_user_instances
limits then.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Cc: Bron Gondwana <brong@fastmail.fm>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:45 -08:00
Paul Menage 804b3c28a4 cgroups: add cpu_relax() calls in css_tryget() and cgroup_clear_css_refs()
css_tryget() and cgroup_clear_css_refs() contain polling loops; these
loops should have cpu_relax calls in them to reduce cross-cache traffic.

Signed-off-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:45 -08:00
Ivan Kokshaysky e5d9a90c36 alpha: use syscall wrappers
Convert OSF syscalls and add alpha specific SYSCALL_ALIAS() macro.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:44 -08:00
Masami Hiramatsu dc19835df6 kprobes: fix module compilation error with CONFIG_KPROBES=n
Define kprobes related data structures even if CONFIG_KPROBES is not set.
This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
kprobe using modules.

[akpm@linux-foundation.org: fix build for non-kprobes-supporting architectures]
Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:43 -08:00
Kumar Gala d8204ee2ad dmi: Fix build breakage
Commit d7b1956fed ("DMI: Introduce
dmi_first_match to make the interface more flexible") introduced compile
errors like the following when !CONFIG_DMI

    drivers/ata/sata_sil.c: In function 'sil_broken_system_poweroff':
    drivers/ata/sata_sil.c:713: error: implicit declaration of function 'dmi_first_match'
    drivers/ata/sata_sil.c:713: warning: initialization makes pointer from integer without a cast

We just need a dummy version of dmi_first_match() to fix this all up.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-28 07:50:14 -08:00
Eric Anholt 30b2363408 drm: Rip out the racy, unused vblank signal code.
Schedule a vblank signal, kill the process, and we'll go walking over freed
memory.  Given that no open-source userland exists using this, nor have I
ever heard of a consumer, just let this code die.

Signed-off-by: Eric Anholt <eric@anholt.net>
Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-28 07:50:14 -08:00
Linus Torvalds e4a7ca2903 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (36 commits)
  USB: Driver for Freescale QUICC Engine USB Host Controller
  USB: option: add QUANTA HSDPA Data Card device ids
  USB: storage: Add another unusual_dev for off-by-one bug
  USB: unusual_dev: usb-storage needs to ignore a device
  USB: GADGET: fix !x & y
  USB: new id for ti_usb_3410_5052 driver
  USB: cdc-acm: Add another conexant modem to the quirks
  USB: 'option' driver - onda device MT503HS has wrong id
  USB: Remove ZTE modem from unusual_devices
  USB: storage: support of Dane-Elec MediaTouch USB device
  USB: usbmon: Implement compat_ioctl
  USB: add kernel-doc for wusb_dev in struct usb_device
  USB: ftdi_sio driver support of bar code scanner from Diebold
  USB: ftdi_sio: added Alti-2 VID and Neptune 3 PID
  USB: cp2101 device
  USB: usblp.c: add USBLP_QUIRK_BIDIR to Brother HL-1440
  USB: remove vernier labpro from ldusb
  USB: CDC-ACM quirk for MTK GPS
  USB: cdc-acm: support some gps data loggers
  USB: composite: Fix bug: low byte of w_index is the usb interface number not the whole 2 bytes of w_index
  ...
2009-01-27 16:08:04 -08:00
Inaky Perez-Gonzalez 11e76ae0f3 USB: add kernel-doc for wusb_dev in struct usb_device
Reported by Randy Dunlap from a warning on the v2.6.29 merge window.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Cc: David Vrabel <david.vrabel@csr.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-27 16:15:36 -08:00
Alexey Dobriyan 40413dcb7b Fix longstanding "error: storage size of '__mod_dmi_device_table' isn't known"
gcc 3.4.6 doesn't like MODULE_DEVICE_TABLE(dmi, x) expansion enough to
error out.  Shut it up in a most simple way.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-27 16:06:21 -08:00
Linus Torvalds 490a8d70cd Merge branch 'hibern_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'hibern_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  SATA PIIX: Blacklist system that spins off disks during ACPI power off
  SATA Sil: Blacklist system that spins off disks during ACPI power off
  SATA AHCI: Blacklist system that spins off disks during ACPI power off
  SATA: Blacklisting of systems that spin off disks during ACPI power off
  DMI: Introduce dmi_first_match to make the interface more flexible
  Hibernation: Introduce system_entering_hibernation
2009-01-27 07:50:41 -08:00
Linus Torvalds 8c022fdd5f Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  pata-rb532-cf: remove set_irq_type from finish_io
  [libata] pata_via: support VX855, future chips whose IDE controller use 0x0571
  sata_mv: no longer experimental (v2)
  sata_mv: msi masking fix (v2)
  sata_mv: Properly initialize main irq mask
  sata_mv: remove bogus nsect restriction
  sata_mv: don't read hc_irq_cause
  sata_mv: fix 8-port timeouts on 508x/6081 chips
  sata_nv: fix MCP5x reset
  sata_nv: rename nv_nf2_hardreset()
  libata: set NODEV_HINT for 0x7f status
  libata-sff: fix incorrect EH message
2009-01-27 07:47:22 -08:00
Sidney Amani 766fb95ba0 UBI: allow direct user-space I/O
Introduce a new ioctl UBI_IOCSETPROP to set properties
on a volume. Also add the first property:
UBI_PROP_DIRECT_WRITE, this property is used to set the
ability to use direct writes in userspace

Signed-off-by: Sidney Amani <seed@uffs.org>
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-01-27 16:54:41 +02:00
Rafael J. Wysocki 2a6e58d273 SATA: Blacklisting of systems that spin off disks during ACPI power off
Introduce new libata flags ATA_FLAG_NO_POWEROFF_SPINDOWN and
ATA_FLAG_NO_HIBERNATE_SPINDOWN that, if set, will prevent disks from
being spun off during system power off and hibernation, respectively
(to handle the hibernation case we need the new system state
SYSTEM_HIBERNATE_ENTER that can be checked against by libata, in
analogy with SYSTEM_POWER_OFF).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-27 02:15:49 -05:00
Rafael J. Wysocki d7b1956fed DMI: Introduce dmi_first_match to make the interface more flexible
Some notebooks from HP have the problem that their BIOSes attempt to
spin down hard drives before entering ACPI system states S4 and S5.
This leads to a yo-yo effect during system power-off shutdown and the
last phase of hibernation when the disk is first spun down by the
kernel and then almost immediately turned on and off by the BIOS.
This, in turn, may result in shortening the disk's life times.

To prevent this from happening we can blacklist the affected systems
using DMI information.  However, only the on-board controlles should
be blacklisted and their PCI slot numbers can be used for this
purpose.  Unfortunately the existing interface for checking DMI
information of the system is not very convenient for this purpose,
because to use it, we would have to define special callback functions
or create a separate struct dmi_system_id table for each blacklisted
system.

To overcome this difficulty introduce a new function
dmi_first_match() returning a pointer to the first entry in an array
of struct dmi_system_id elements that matches the system DMI
information.  Then, we can use this pointer to access the entry's
.driver_data field containing the additional information, such as
the PCI slot number, allowing us to do the desired blacklisting.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-27 02:15:47 -05:00