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Valkyriefb and macfb will adopt the same card if they get the chance, so
remove valkyrie support from macfb. Also fix the "valkyriefb: can't do
832x624x8" problem reported by Raylynn Knight some time ago, by adding
vmode 13 support for CONFIG_MAC. Also add vmode 11 since that works too.
Make use of the monitor sense lines on 68k Macs too. Also some cleanups.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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The valkyriefb driver assumes that this logic holds:
mac_vmode_to_var(X, cmode, &var);
mac_var_to_vmode(&var, &vmode, &cmode);
assert(vmode == X);
But it doesn't hold because mac_var_to_vmode() can return a mode with a
slower pixel clock, even when a match is available. So we end up with this
failure:
using video mode 11 and color mode 0.
valkyriefb: vmode 12 not valid.
valkyriefb: can't set default video mode
valkyriefb: vmode 12 not valid.
Rather than have mac_var_to_mode() return the first reasonable mode it
finds, have it return the mode that is closest to the requested one (or
the mode with the closest longer pixel clock period if there is no exact
match).
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Move platform device code from the drivers to the platform init function.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Move platform device code from the driver to the platform init function.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Remove the old 68k Mac serial port code and a lot of related cruft. Add
new SCC platform devices to mac 68k platform.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Add platform driver support to the pmac-zilog driver, for m68k macs.
Place the powermac-specific code inside #ifdef CONFIG_PPC_PMAC.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Whitespace cleanups and comment typo fix.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Adjust the platform device code to conform with the code style used in the
rest of this patch series. No need to name resources nor to register
devices which are not applicable.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Cleanup whitespace and comments. Remove some dead code.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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After commit e0c0978699a83f26f2341f7eedc1463b79e31aff ("ataflop: remove
buggy/commented-out IRQ disable from do_fd_request()") the `flags' variable
became unused:
drivers/block/ataflop.c:1473: warning: unused variable 'flags'
Hence remove it.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
@depends on haskernel@
expression x,__divisor;
@@
- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Trivial patch which adds the __init macro to the module_init
function and all of its helper functions of drivers/char/vme_scc.c
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Remove the comments referring to a function map_chunk that no longer exists.
Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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The test in __ioremap to reject memory ranges crossing the 0 boundary
rejects also memory ranges ending at the end of the memory. Fix that.
Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Make asm/swab.h compatible with ColdFire ISA_B CPUs.
Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PM / Hibernate: Fix preallocating of memory
PM / Hibernate: Remove swsusp.c finally
PM / Hibernate: Remove trailing space in message
PM: Allow SCSI devices to suspend/resume asynchronously
PM: Allow USB devices to suspend/resume asynchronously
USB: implement non-tree resume ordering constraints for PCI host controllers
PM: Allow PCI devices to suspend/resume asynchronously
PM / Hibernate: Swap, remove useless check from swsusp_read()
PM / Hibernate: Really deprecate deprecated user ioctls
PM: Allow device drivers to use dpm_wait()
PM: Start asynchronous resume threads upfront
PM: Add facility for advanced testing of async suspend/resume
PM: Add a switch for disabling/enabling asynchronous suspend/resume
PM: Asynchronous suspend and resume of devices
PM: Add parent information to timing messages
PM: Document device power attributes in sysfs
PM / Runtime: Add sysfs switch for disabling device run-time PM
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There's currently an open Ubuntu bug[0], with the intent to compile NFS_FSCACHE
(and possibly AFS_FSCACHE, 9P_FSCACHE) into the standard Ubuntu kernel.
However, since *_FSCACHE still depends on EXPERIMENTAL, this won't happen.
As Arjan van de Ven pointed out[1], the EXPERIMENTAL flag doesn't mean that
much any more, I propose the following patch to fs/nfs/Kconfig. I'd do the
same for fs/9p/Kconfig and fs/afs/Kconfig, but as I did not test 9p or AFS, I
feel it would not be appropriate for me to remove the flag.
[0] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/440522/comments/5
[1] http://lkml.org/lkml/2010/1/23/145
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>
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git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
toshiba_acpi: Add full hotkey support
hp-wmi: Add support for tablet rotation key
dell-laptop: Add another Dell laptop to the DMI whitelist
classmate-laptop: use a single MODULE_DEVICE_TABLE to get correct aliases
dell-laptop: Pay attention to which devices the hardware switch controls
dell-laptop: Use buffer with 32-bit physical address
dell-laptop: Blacklist machines not supporting dell-laptop
dell-laptop: Block software state changes when rfkill hard blocked
dell-laptop: Fix small memory leak
dell-laptop: Fix platform device unregistration
dell-laptop: Update rfkill state on kill switch
compal-laptop: Replace sysfs support with rfkill support
compal-laptop: Add support for known Compal made Dell laptops
MAINTAINERS: update drivers/platform/x86 information
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git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
dlm: use bastmode in debugfs output
dlm: Send lockspace name with uevents
dlm: send reply before bast
dlm: fix ordering of bast and cast
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* 'for-linus' of git://oss.sgi.com/xfs/xfs: (52 commits)
fs/xfs: Correct NULL test
xfs: optimize log flushing in xfs_fsync
xfs: only clear the suid bit once in xfs_write
xfs: kill xfs_bawrite
xfs: log changed inodes instead of writing them synchronously
xfs: remove invalid barrier optimization from xfs_fsync
xfs: kill the unused XFS_QMOPT_* flush flags V2
xfs: Use delay write promotion for dquot flushing
xfs: Sort delayed write buffers before dispatch
xfs: Don't issue buffer IO direct from AIL push V2
xfs: Use delayed write for inodes rather than async V2
xfs: Make inode reclaim states explicit
xfs: more reserved blocks fixups
xfs: turn off sign warnings
xfs: don't hold onto reserved blocks on remount,ro
xfs: quota limit statvfs available blocks
xfs: replace KM_LARGE with explicit vmalloc use
xfs: cleanup up xfs_log_force calling conventions
xfs: kill XLOG_VEC_SET_TYPE
xfs: remove duplicate buffer flags
...
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6
* 'ibft-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6:
ibft: Update MAINTAINERS file.
drivers/firmware/iscsi_ibft.c: remove NIPQUAD_FMT, use %pI4
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (362 commits)
V4L-DVB: cx88-dvb: remove extra attribution for core
V4L/DVB: v4l: soc_camera: fix bound checking of mbus_fmt[] index
V4L/DVB: Add support for SMT7020 to cx88
V4L/DVB: radio-si470x: Use UTF-8 encoding on a comment
V4L/DVB: MAINTAINERS: Telegent tlg2300 section fix
V4L/DVB: gspca_stv06xx: Add support for camera button
V4L/DVB: gspca_ov519: add support for the button on ov511 based cams
V4L/DVB: gspca_ov519: Add support for the button on ov518 based cams
V4L/DVB: gspca_ov519: add support for the button on ov519 based cams
V4L/DVB: gspca_main: Fix a compile error when CONFIG_INPUT is not set
V4L/DVB: gspca_main: some input error handling fixes
V4L/DVB: gspca_main: Allow use of input device creation code for non int. inputs
V4L/DVB: gspca_pac7302: much improved exposure control
V4L/DVB: gspca_sonixb: Make sonixb driver handle pas106 and pas202 cameras
V4L/DVB: gspca_sonixb: pas106: fixup bright ctrl and add gain and exposure ctrls
V4L/DVB: Documentation: gspca.txt: update known mr97310a cams
V4L/DVB: gspca_mr97310a: add support for the Sakar 1638x CyberPix
V4L/DVB: gscpa_sonixb: limit ov7630 max framerate at 640x480
V4L/DVB: gspca_sonixb: pas202: fixup brightness ctrl and add gain and exposure ctrls
V4L/DVB: gscpa_sonixb: Differentiate between sensors with a coarse and fine expo ctrl
...
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invalid Payload Pointer
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
has a bug that causes endless loop when Payload Pointer of MPEG2-TS
frame is 182 or 183. Anyone who sends malicious MPEG2-TS frame will
cause the receiver of ULE SNDU to go into endless loop.
This patch was generated and tested against linux-2.6.32.9 and should
apply cleanly to linux-2.6.33 as well because there was only one typo
fix to dvb_net.c since v2.6.32.
This bug was brought to you by modern day Santa Claus who decided to
shower the satellite dish at Keio University with heavy snow causing
huge burst of errors. We, receiver end, received Santa Claus's gift in
the form of kernel bug.
Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code for I always produces buggy code.
Signed-off-by: Ang Way Chuang <wcang79@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'kmemcheck-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
kmemcheck: Test the full object in kmemcheck_is_obj_initialized()
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/xfs-vipt:
xfs: fix xfs to work with Virtually Indexed architectures
sh: add mm API for DMA to vmalloc/vmap areas
arm: add mm API for DMA to vmalloc/vmap areas
parisc: add mm API for DMA to vmalloc/vmap areas
mm: add coherence API for DMA to vmalloc/vmap areas
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (158 commits)
[SCSI] Fix printing of failed 32-byte commands
[SCSI] Fix printing of variable length commands
[SCSI] libsrp: fix bug in ADDITIONAL CDB LENGTH interpretation
[SCSI] scsi_dh_alua: Add IBM Power Virtual SCSI ALUA device to dev list
[SCSI] scsi_dh_alua: add netapp to dev list
[SCSI] qla2xxx: Update version number to 8.03.02-k1.
[SCSI] qla2xxx: EEH: Restore PCI saved state during pci slot reset.
[SCSI] qla2xxx: Add firmware ETS burst support.
[SCSI] qla2xxx: Correct loop-resync issues during SNS scans.
[SCSI] qla2xxx: Correct use-after-free issue in terminate_rport_io callback.
[SCSI] qla2xxx: Correct EH bus-reset handling.
[SCSI] qla2xxx: Proper clean-up of BSG requests when request times out.
[SCSI] qla2xxx: Initialize payload receive length in failure path of vendor commands
[SCSI] fix duplicate removal on error path in scsi_sysfs_add_sdev
[SCSI] fix refcounting bug in scsi_get_host_dev
[SCSI] fix memory leak in scsi_report_lun_scan
[SCSI] lpfc: correct PPC build failure
[SCSI] raid_class: add raid1e
[SCSI] mpt2sas: Do not call sas_is_tlr_enabled for RAID volumes.
[SCSI] zfcp: Introduce header file for qdio structs and inline functions
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (187 commits)
sh: remove dead LED code for migo-r and ms7724se
sh: ecovec build fix for CONFIG_I2C=n
sh: ecovec r-standby support
sh: ms7724se r-standby support
sh: SH-Mobile R-standby register save/restore
clocksource: Fix up a registration/IRQ race in the sh drivers.
sh: ms7724: modify scan_timing for KEYSC
sh: ms7724: Add sh_sir support
sh: mach-ecovec24: Add sh_sir support
sh: wire up SET/GET_UNALIGN_CTL.
sh: allow alignment fault mode to be configured at kernel boot.
sh: sh7724: Update FSI/SPU2 clock
sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
sh: add sh7724 kick callback to clk_div4_table
sh: introduce struct clk_div4_table
sh: clock-cpg div4 set_rate() shift fix
sh: Turn on speculative return for SH7785 and SH7786
sh: Merge legacy and dynamic PMB modes.
sh: Use uncached I/O helpers in PMB setup.
sh: Provide uncached I/O helpers.
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (31 commits)
crypto: aes_generic - Fix checkpatch errors
crypto: fcrypt - Fix checkpatch errors
crypto: ecb - Fix checkpatch errors
crypto: des_generic - Fix checkpatch errors
crypto: deflate - Fix checkpatch errors
crypto: crypto_null - Fix checkpatch errors
crypto: cipher - Fix checkpatch errors
crypto: crc32 - Fix checkpatch errors
crypto: compress - Fix checkpatch errors
crypto: cast6 - Fix checkpatch errors
crypto: cast5 - Fix checkpatch errors
crypto: camellia - Fix checkpatch errors
crypto: authenc - Fix checkpatch errors
crypto: api - Fix checkpatch errors
crypto: anubis - Fix checkpatch errors
crypto: algapi - Fix checkpatch errors
crypto: blowfish - Fix checkpatch errors
crypto: aead - Fix checkpatch errors
crypto: ablkcipher - Fix checkpatch errors
crypto: pcrypt - call the complete function on error
...
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Provide the right e-mail and names for me and Peter.
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
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Convert netmask to __be32 and format it with %pI4
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Konrad Rzeszutek <ketuzsezr@darnok.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: Peter Jones <pjones@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The hibernate memory preallocation code allocates memory to push some
user space data out of physical RAM, so that the hibernation image is
not too large. It allocates more memory than necessary for creating
the image, so it has to release some pages to make room for
allocations made while suspending devices and disabling nonboot CPUs,
or the system will hang due to the lack of free pages to allocate
from. Unfortunately, the function used for freeing these pages,
free_unnecessary_pages(), contains a bug that prevents it from doing
the job on all systems without highmem.
Fix this problem, which is a regression from the 2.6.30 kernel, by
using the right condition for the termination of the loop in
free_unnecessary_pages().
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Alan Jenkins <sourcejedi.lkml@googlemail.com>
Cc: stable@kernel.org
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Its contents and entry in Makefile were already removed in
8e60c6a1348e17e68ad73589a52a03876e7059be
(Shift remaining code from swsusp.c to hibernate.c)
but somehow it remained in-place (rjw: which most likely was my
mistake).
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Remove a trailing space from a message in swsusp_save().
Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Set power.async_suspend for all SCSI devices, targets and hosts, so
that they can be suspended and resumed in parallel with the main
suspend/resume thread and possibly with other devices they don't
depend on in a known way (i.e. devices which are not their parents or
children).
The power.async_suspend flag is also set for devices that don't have
suspend or resume callbacks, because otherwise they would make the
main suspend/resume thread wait for their "asynchronous" children
(during suspend) or parents (during resume), effectively negating the
possible gains from executing these devices' suspend and resume
callbacks asynchronously.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Set power.async_suspend for USB devices, endpoints and interfaces,
allowing them to be suspended and resumed asynchronously during
system sleep transitions.
The power.async_suspend flag is also set for devices that don't have
suspend or resume callbacks, because otherwise they would make the
main suspend/resume thread wait for their "asynchronous" children
(during suspend) or parents (during resume), effectively negating the
possible gains from executing these devices' suspend and resume
callbacks asynchronously.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch (as1331) adds non-tree ordering constraints needed for
proper resume of PCI USB host controllers from hibernation. The main
issue is that non-high-speed devices must not be resumed before the
high-speed root hub, because it is the ehci_bus_resume() routine which
takes care of handing the device connection over to the companion
controller. If the device resume is attempted before the handover
then the device won't be found and it will be treated as though it had
disconnected.
The patch adds a new field to the usb_bus structure; for each
full/low-speed bus this field will contain a pointer to the companion
high-speed bus (if one exists). It is used during normal device
resume; if the hs_companion pointer isn't NULL then we wait for the
root-hub device on the hs_companion bus.
A secondary issue is that an EHCI controlller shouldn't be resumed
before any of its companions. On some machines I have observed
handovers failing if the companion controller is reinitialized after
the handover. Thus, the EHCI resume routine must wait for the
companion controllers to be resumed.
The patch also fixes a small bug in usb_hcd_pci_probe(); an error path
jumps to the wrong label, causing a memory leak.
[rjw: Fixed compilation for CONFIG_PM_SLEEP unset.]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Set power.async_suspend for all PCI devices and PCIe port services,
so that they can be suspended and resumed in parallel with other
devices they don't depend on in a known way (i.e. devices which are
not their parents or children).
This only affects the "regular" suspend and resume stages, which
means in particular that the restoration of the PCI devices' standard
configuration registers during resume will still be carried out
synchronously (at the "early" resume stage).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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It will never reach here if the sws_resume_bdev is erratic.
swsusp_read() is called only from software_resume(), but after
swsusp_check() which would catch the error state.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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They were deprecated and removed from exported headers more than 2
years ago. Inform users about their removal in the future now.
(Switch cases needed to be reorderded for an easy fall through.)
And add an entry to feature-removal-schedule.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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There are some dependencies between devices (in particular, between
EHCI USB controllers and their OHCI/UHCI siblings) which are not
reflected by the structure of the device tree. With synchronous
suspend and resume these dependencies are taken into accout
automatically, because the devices in question are always registered
in the right order, but to meet these constraints with asynchronous
suspend and resume the drivers of these devices will need to use
dpm_wait() in their suspend/resume routines, so introduce a helper
function allowing them to do that.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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It has been shown by testing that total device resume time can be
reduced significantly (by as much as 50% or more) if the async
threads executing some devices' resume routines are all started
before the main resume thread starts to handle the "synchronous"
devices.
This is a consequence of the fact that the slowest devices tend to be
located at the end of dpm_list, so their resume routines are started
very late. Consequently, they have to wait for all the preceding
"synchronous" devices before their resume routines can be started
by the main resume thread, even if they are "asynchronous". By
starting their async threads upfront we effectively move those
devices towards the beginning of dpm_list, without breaking their
ordering with respect to their parents and children. As a result,
their resume routines are started much earlier and we are able to
save much more device resume time this way.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Add configuration switch CONFIG_PM_ADVANCED_DEBUG for compiling in
extra PM debugging/testing code allowing one to access some
PM-related attributes of devices from the user space via sysfs.
If CONFIG_PM_ADVANCED_DEBUG is set, add sysfs attribute power/async
for every device allowing the user space to access the device's
power.async_suspend flag and modify it, if desired.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Add sysfs attribute /sys/power/pm_async allowing the user space to
disable/enable asynchronous suspend/resume of devices.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Theoretically, the total time of system sleep transitions (suspend
to RAM, hibernation) can be reduced by running suspend and resume
callbacks of device drivers in parallel with each other. However,
there are dependencies between devices such that we're not allowed
to suspend the parent of a device before suspending the device
itself. Analogously, we're not allowed to resume a device before
resuming its parent.
The most straightforward way to take these dependencies into accout
is to start the async threads used for suspending and resuming
devices at the core level, so that async_schedule() is called for
each suspend and resume callback supposed to be executed
asynchronously.
For this purpose, introduce a new device flag, power.async_suspend,
used to mark the devices whose suspend and resume callbacks are to be
executed asynchronously (ie. in parallel with the main suspend/resume
thread and possibly in parallel with each other) and helper function
device_enable_async_suspend() allowing one to set power.async_suspend
for given device (power.async_suspend is unset by default for all
devices). For each device with the power.async_suspend flag set the
PM core will use async_schedule() to execute its suspend and resume
callbacks.
The async threads started for different devices as a result of
calling async_schedule() are synchronized with each other and with
the main suspend/resume thread with the help of completions, in the
following way:
(1) There is a completion, power.completion, for each device object.
(2) Each device's completion is reset before calling async_schedule()
for the device or, in the case of devices with the
power.async_suspend flags unset, before executing the device's
suspend and resume callbacks.
(3) During suspend, right before running the bus type, device type
and device class suspend callbacks for the device, the PM core
waits for the completions of all the device's children to be
completed.
(4) During resume, right before running the bus type, device type and
device class resume callbacks for the device, the PM core waits
for the completion of the device's parent to be completed.
(5) The PM core completes power.completion for each device right
after the bus type, device type and device class suspend (or
resume) callbacks executed for the device have returned.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Add parent information to the messages printed by the suspend/resume
core when initcall_debug is set.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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There are sysfs attributes in /sys/devices/.../power/ that haven't
been documented yet in Documentation/ABI/. Document them as
appropriate.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Add new device sysfs attribute, power/control, allowing the user
space to block the run-time power management of the devices. If this
attribute is set to "on", the driver of the device won't be able to power
manage it at run time (without breaking the rules) and the device will
always be in the full power state (except when the entire system goes
into a sleep state).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
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This is not needed, since the function already do it. Also, it causes
a warning at the compilation, since a new var is declared in the middle
of the code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (48 commits)
x86/PCI: Prevent mmconfig memory corruption
ACPI: Use GPE reference counting to support shared GPEs
x86/PCI: use host bridge _CRS info by default on 2008 and newer machines
PCI: augment bus resource table with a list
PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
PCI: read bridge windows before filling in subtractive decode resources
PCI: split up pci_read_bridge_bases()
PCIe PME: use pci_pcie_cap()
PCI PM: Run-time callbacks for PCI bus type
PCIe PME: use pci_is_pcie()
PCI / ACPI / PM: Platform support for PCI PME wake-up
ACPI / ACPICA: Multiple system notify handlers per device
ACPI / PM: Add more run-time wake-up fields
ACPI: Use GPE reference counting to support shared GPEs
PCI PM: Make it possible to force using INTx for PCIe PME signaling
PCI PM: PCIe PME root port service driver
PCI PM: Add function for checking PME status of devices
PCI: mark is_pcie obsolete
PCI: set PCI_PREF_RANGE_TYPE_64 in pci_bridge_check_ranges
PCI: pciehp: second try to get big range for pcie devices
...
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