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Matthew Garrett 96d60303fd ahci: Turn off DMA engines when there's no device attached 
According to section 10.3.1 of the AHCI spec, PxCMD.ST must not be set
unless there's a device attached. Following this saves us a measurable
quantity of power and does not impair hotplug support. Based on a patch
by Kristen Carlson Accardi.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-05-14 17:08:01 -04:00
..
accessibility
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acpi
ACPI: sleep: eliminate duplicate entries in acpisleep_dmi_table[]
2010-05-11 10:07:53 -07:00
amba
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ata
ahci: Turn off DMA engines when there's no device attached
2010-05-14 17:08:01 -04:00
atm
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
auxdisplay
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
base
Revert "memory-hotplug: add 0x prefix to HEX block_size_bytes"
2010-04-09 10:05:33 -07:00
block
Merge branch 'for-jens' of git://git.drbd.org/linux-2.6-drbd into for-linus
2010-05-04 08:48:53 +02:00
bluetooth
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
cdrom
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char
tty: Fix unbalanced BKL handling in error path
2010-05-13 12:10:56 -07:00
clocksource
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
connector
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
cpufreq
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
2010-04-24 11:35:21 -07:00
cpuidle
cpuidle: Fix incorrect optimization
2010-05-09 18:35:36 -07:00
crypto
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
dca
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
dio
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dma
Merge branch 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2010-05-06 08:37:39 -07:00
edac
edac, mce: Fix wrong mask and macro usage
2010-04-30 10:15:39 -07:00
eisa
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firewire
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
2010-04-22 12:54:54 -07:00
firmware
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip
2010-04-07 11:02:23 -07:00
gpio
it8761e_gpio: fix bug in gpio numbering
2010-05-11 17:33:41 -07:00
gpu
drivers/gpu/drm/i915/i915_irq.c:i915_error_object_create(): use correct kmap-atomic slot
2010-05-11 17:33:42 -07:00
hid
HID: fix suspend crash by moving initializations earlier
2010-05-07 23:33:52 +02:00
hwmon
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
2010-05-11 17:38:04 -07:00
i2c
i2c-core: Use per-adapter userspace device lists
2010-05-04 11:09:28 +02:00
ide
pata_pcmcia / ide-cs: Fix bad hashes for Transcend and kingston IDs
2010-05-05 14:48:48 -04:00
idle
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ieee1394
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ieee802154
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infiniband
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
2010-04-09 11:53:06 -07:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2010-05-13 07:28:43 -07:00
isdn
Fix ISDN/Gigaset build failure
2010-04-19 11:53:17 -07:00
leds
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
lguest
lguest: stop using KVM hypercall mechanism
2010-04-14 21:43:56 +09:30
macintosh
device_attributes: add sysfs_attr_init() for dynamic attributes
2010-04-07 08:38:03 -07:00
mca
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md
md: restore ability of spare drives to spin down.
2010-05-07 21:10:57 +10:00
media
V4L/DVB: pxa_camera: move fifo reset direct before dma start
2010-05-06 19:20:52 -03:00
memstick
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
message
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
mfd
mfd: Clean up after WM83xx AUXADC interrupt if it arrives late
2010-05-13 12:58:55 +02:00
misc
VMware Balloon driver
2010-04-24 11:31:26 -07:00
mmc
mmc: atmel-mci: fix in debugfs: response value printing
2010-05-11 17:33:41 -07:00
mtd
[MTD] Remove zero-length files mtdbdi.c and internal.ho
2010-05-05 15:25:12 -04:00
net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
2010-05-11 10:11:40 -07:00
nubus
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
of
of: check for IS_ERR()
2010-04-28 01:07:29 -06:00
oprofile
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
parisc
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
parport
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
pci
Revert "PCI: update bridge resources to get more big ranges in PCI assign unssigned"
2010-05-12 18:39:45 -07:00
pcmcia
Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
2010-05-07 14:11:09 -07:00
platform
eeepc-laptop: add missing sparse_keymap_free
2010-04-23 15:23:21 -04:00
pnp
Merge branches 'bugzilla-14337', 'bugzilla-14998', 'bugzilla-15407', 'bugzilla-15903' and 'misc-2.6.34' into release
2010-05-06 22:04:31 -04:00
power
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
pps
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ps3
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
rapidio
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regulator
regulator: fix enabling regulator issue on max8925
2010-04-28 15:24:34 +01:00
rtc
rtc-mxc: multiple fixes in rtc-mxc probe method
2010-04-07 08:38:05 -07:00
s390
[S390] dasd: fix race between tasklet and dasd_sleep_on
2010-05-12 09:32:26 +02:00
sbus
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
scsi
[SCSI] Retry commands with UNIT_ATTENTION sense codes to fix ext3/ext4 I/O error
2010-05-05 12:15:57 -04:00
serial
serial: imx.c: fix CTS trigger level lower to avoid lost chars
2010-05-13 12:10:56 -07:00
sfi
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sh
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
sn
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
spi
omap2_mcspi: small fixes of output data format
2010-04-28 01:25:43 -06:00
ssb
MIPS: Fix SSB PCIcore IO resource management
2010-04-12 17:26:14 +01:00
staging
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
2010-04-30 13:04:14 -07:00
tc
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
telephony
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thermal
drivers/thermal/thermal_sys.c: fix 'key f70f4b50 not in .data' in thermal_sys
2010-04-07 08:38:03 -07:00
uio
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
usb
USB: sl811-hcd: Fix device disconnect
2010-04-30 09:25:12 -07:00
uwb
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
vhost
vhost: fix barrier pairing
2010-05-12 18:04:04 +03:00
video
fbdev: bfin-t350mcqb-fb: fix fbmem allocation with blanking lines
2010-05-11 17:33:42 -07:00
virtio
virtio: Fix GFP flags passed from the virtio balloon driver
2010-04-22 07:34:05 -07:00
vlynq
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
w1
w1: fix omap 1-wire driver compilation
2010-04-24 11:31:25 -07:00
watchdog
watchdog: ep93xx_wdt.c fix default timout value in MODULE_PARM_DESC string.
2010-05-03 08:58:56 +00:00
xen
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
zorro
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Kconfig
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Makefile
virtio: initialize earlier
2010-05-07 14:01:17 -07:00