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Tejun Heo 07c53dac49 ahci: don't enter slumber on power down 
Some ATA/ATAPI devices act weirdly after the link is put into slumber
mode.  Some hang completely requiring physical power removal while
others fail to wake up till the link is hardreset a couple of times.

The addition of slumber on power down was never driven by real need.
It just followed what ahci spec said literally.  The spec itself seems
faulty in that it doesn't consider devices (not controllers) which
don't support link powersaving mode.

Theory never matches reality when it comes to dark allys of cheap
ATA/ATAPI world.  It's just unrealistic to expect vendors to test
rarely used link powersaving feature rigorously.  This patch makes
ahci more friendly to the coldness of reality.

This shouldn't have any negative effect - when suspend operation
succeeds, we power off the whole machine; otherwise, we wake up
everything.  I can't see any reason to be so elaborate with powering
down the link in the first place.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
 		2007-01-24 02:03:45 -05:00
..
acorn [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
acpi [PATCH] acpi: remove "video device notify" message 2007-01-23 07:52:07 -08:00
amba
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ata ahci: don't enter slumber on power down 2007-01-24 02:03:45 -05:00
atm [PATCH] horizon.c: missing __devinit 2007-01-23 11:09:49 -08:00
base [PATCH] fix kernel-doc warnings in 2.6.20-rc1 2006-12-22 08:55:47 -08:00
block [PATCH] Fix BUG at drivers/scsi/scsi_lib.c:1118 caused by "pktsetup dvd /dev/sr0" 2007-01-05 23:55:22 -08:00
bluetooth [Bluetooth] Correct SCO buffer for Broadcom based Dell laptops 2007-01-09 00:29:59 -08:00
cdrom [PATCH] cdrom: set default timeout to 7 seconds 2007-01-03 17:32:54 -08:00
char Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2007-01-23 11:19:32 -08:00
clocksource [PATCH] clocksource: small cleanup 2006-12-10 09:57:22 -08:00
connector [PATCH] connector: some fixes for ia64 unaligned access errors 2007-01-05 23:55:29 -08:00
cpufreq [CPUFREQ] Bug fix for acpi-cpufreq and cpufreq_stats oops on frequency change notification 2006-12-22 22:45:41 -05:00
crypto [PATCH] geode crypto is PCI device 2006-12-10 09:55:40 -08:00
dio
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dma
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edac
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eisa
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fc4 [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
firmware
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hid HID: hid/hid-input.c doesn't need to include linux/usb/input.h 2007-01-21 22:17:57 +01:00
hwmon hwmon/w83793: Hide invalid VID readings 2007-01-18 22:14:24 +01:00
i2c i2c/m41t00: Do not forget to write year 2007-01-05 17:54:05 +01:00
ide [PATCH] atiixp: Old drivers/ide layer driver for the ATIIXP hang fix 2007-01-05 23:55:22 -08:00
ieee1394 ieee1394: sbp2: fix probing of some DVD-ROM/RWs 2007-01-10 20:24:42 +01:00
infiniband IB/ehca: Fix mismatched spin_unlock in irq handler 2007-01-22 17:03:55 -08:00
input [SPARC64]: Fix of_iounmap() region release. 2006-12-31 14:06:05 -08:00
isdn [PATCH] Call init_timer() for ISDN PPP CCP reset state timer 2006-12-22 14:31:24 -08:00
kvm [PATCH] KVM: fix bogus pagefault on writable pages 2007-01-23 07:52:06 -08:00
leds [PATCH] Fix leds-s3c24xx hardware.h reference 2007-01-05 23:55:21 -08:00
macintosh [PATCH] Fix implicit declarations in via-pmu 2007-01-05 23:55:21 -08:00
mca
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md [PATCH] md: pass down BIO_RW_SYNC in raid{1,10} 2007-01-11 18:18:21 -08:00
media V4L/DVB (5123): Buf_qbuf: fix: videobuf_queue->stream corruption and lockup 2007-01-23 22:00:21 -02:00
message [SCSI] fusion: bump version 2007-01-06 09:32:49 -06:00
mfd
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misc Pull platform-drivers into test branch 2006-12-20 02:52:17 -05:00
mmc mmc: Correct definition of R6 2007-01-15 06:44:03 +01:00
mtd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2007-01-18 10:34:51 +11:00
net [PATCH] email change for shemminger@osdl.org 2007-01-23 14:18:49 -08:00
nubus
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oprofile
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parisc [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
parport [PATCH] Kconfig refactoring for better menu nesting 2006-12-10 09:55:39 -08:00
pci PCI: fix pci-driver kernel-doc 2007-01-22 12:00:54 -08:00
pcmcia [PATCH] Fix numerous kcalloc() calls, convert to kzalloc() 2006-12-13 09:05:52 -08:00
pnp [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
ps3 [POWERPC] ps3: Add vuart support 2006-12-11 13:49:53 +11:00
rapidio
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rtc [PATCH] rtc-sh: act on rtc_wkalrm.enabled when setting an alarm 2007-01-23 07:52:06 -08:00
s390 Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 2007-01-09 09:36:06 -08:00
sbus [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-01-22 10:35:34 -08:00
serial [PATCH] x86-64: modpost add more symbols to whitelist pattern2 2007-01-11 01:52:44 +01:00
sh
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sn
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spi [PATCH] spi_s3c24xx_gpio: use right header 2006-12-30 10:56:43 -08:00
tc
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telephony
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usb [PATCH] funsoft: ktermios fix 2007-01-23 11:09:49 -08:00
video backlight: fix backlight_device_register compile failures 2007-01-02 00:06:18 -05:00
w1 [PATCH] w1: Fix for kconfig entry typo 2006-12-13 09:05:48 -08:00
zorro
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Kconfig [PATCH] kvm: userspace interface 2006-12-10 09:57:22 -08:00
Makefile [PATCH] kvm: userspace interface 2006-12-10 09:57:22 -08:00