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Tejun Heo c2c7a89c5e libata: improve probe failure handling 
When link is flaky at high speed, it isn't uncommon for a device to
repeatedly fail probing sequence early after successfully negotiating
high link speed.  This often leads to consecutive hotplug events
without successful probing.

This patch improves libata EH such that it remembers probing trials
and if there have been more than two unsuccessful trials in the past
60 seconds, slows down link speed to 1.5Gbps.

As link speed negotiation is the duty of the PHY layer proper, the
goal of this fallback mechanism is to provide the last resort when
everything else fails, which unfortunately happens not too
infrequently, so no fancy 6->3->1.5 speeding down or highest
successful transmission speed seen kind of logics (yet).

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02 23:03:34 -05:00
..
accessibility
acpi Merge branch 'misc' into release 2009-01-16 14:45:34 -05:00
amba [ARM] Fix realview build 2009-01-08 16:29:41 +00:00
ata libata: improve probe failure handling 2009-02-02 23:03:34 -05:00
atm generic swap(): iphase: rename swap() to swap_byte_order() 2009-01-08 08:31:14 -08:00
auxdisplay
base driver-core: fix kernel-doc parameter name 2009-01-28 15:55:48 -08:00
block powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/block 2009-01-16 16:15:13 +11:00
bluetooth
cdrom
char Fix memory corruption in console selection 2009-01-31 15:51:31 -08:00
clocksource
connector
cpufreq Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-10 06:12:18 -08:00
cpuidle
crypto
dca
dio m68k: dio - Kill resource_size_t format warnings 2009-01-12 20:56:42 +01:00
dma i.MX31: Image Processing Unit DMA and IRQ drivers 2009-01-19 15:36:21 -07:00
edac powerpc: More printing warning fixes for the l64 to ll64 conversion 2009-01-28 17:15:52 +11:00
eisa
firewire firewire: sbp2: add workarounds for 2nd and 3rd generation iPods 2009-01-29 20:19:48 +01:00
firmware DMI: Introduce dmi_first_match to make the interface more flexible 2009-01-27 02:15:47 -05:00
gpio gpiolib: fix request related issue 2009-01-29 18:04:43 -08:00
gpu Stop playing silly games with the VM_ACCOUNT flag 2009-01-31 15:08:56 -08:00
hid HID: document difference between hid_blacklist and hid_ignore_list 2009-01-29 11:23:12 +01:00
hwmon hwmon: applesmc: add support for MacPro 3 temperature sensors 2009-01-29 18:04:45 -08:00
i2c i2c: Move old eeprom driver to /drivers/misc/eeprom 2009-01-26 21:19:53 +01:00
ide drivers/ide/palm_bk3710.c buildfix 2009-01-19 13:46:57 +01:00
idle
ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-01-29 18:09:41 -08:00
infiniband Merge branches 'ehca', 'ipoib' and 'mlx4' into for-linus 2009-01-16 15:05:54 -08:00
input input: PCF50633 input driver 2009-01-11 01:34:25 +01:00
isdn isdn: Fix missing ifdef in isdn_ppp 2009-01-26 12:24:38 -08:00
leds lis3lv02d: merge with leds hp disk 2009-01-15 16:39:40 -08:00
lguest lguest: Fix a memory leak with the lg object during launcher close 2009-01-30 11:34:11 +10:30
macintosh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-01-07 11:31:52 -08:00
mca
md md: don't retry recovery of raid1 that fails due to error on source drive. 2009-01-09 08:31:11 +11:00
media Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-01-08 11:05:59 -08:00
memstick memstick: annotate endianness of attribute structs 2009-01-09 16:54:41 -08:00
message [SCSI] mpt fusion: Add Firmware debug support 2009-01-13 10:36:02 -06:00
mfd Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-01-13 14:52:35 -08:00
misc hpilo: increment version 2009-01-29 18:04:45 -08:00
mmc [ARM] 5369/1: omap mmc: Add new omap hsmmc controller for 2430 and 34xx, v3 2009-01-24 11:41:21 +00:00
mtd Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6 2009-01-29 18:12:58 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-01-31 15:50:43 -08:00
nubus
of drivers/of: Add the of_find_i2c_device_by_node function. 2009-01-09 15:49:06 -07:00
oprofile oprofile: fix uninitialized use of struct op_entry 2009-01-17 17:26:39 +01:00
parisc Documentation: move DMA-mapping.txt to Doc/PCI/ 2009-01-29 18:19:29 -08:00
parport
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-01-26 10:13:36 -08:00
pcmcia powerpc: Change u64/s64 to a long long integer type 2009-01-13 14:47:59 +11:00
platform hp-wmi: set initial docking state 2009-01-29 18:04:45 -08:00
pnp Merge branch 'linus' into release 2009-01-09 03:39:43 -05:00
power power_supply: pda_power: Don't request shared IRQs w/ IRQF_DISABLED 2009-01-26 02:09:26 +03:00
ps3 powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/ps3 2009-01-16 16:15:14 +11:00
rapidio
regulator leds: Fix bounds checking of wm8350->pmic.led 2009-01-30 21:50:49 +00:00
rtc rtc: rtc-twl4030 don't mask alarm interrupts on shutdown 2009-01-15 16:39:36 -08:00
s390 lcs: fix compilation for !CONFIG_IP_MULTICAST 2009-01-25 17:59:26 -08:00
sbus
scsi [SCSI] ibmvfc: Fix DMA mapping leak on memory allocation failure 2009-01-25 08:14:53 -06:00
serial Add enable_ms to jsm driver 2009-01-30 08:40:54 -08:00
sh
sn
spi spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom 2009-01-26 21:19:54 +01:00
ssb
staging Documentation: move DMA-mapping.txt to Doc/PCI/ 2009-01-29 18:19:29 -08:00
tc
telephony
thermal
uio
usb USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
uwb Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-01-08 11:05:59 -08:00
video fbdev: incorrect URL given in drivers/video/Kconfig 2009-01-29 18:04:44 -08:00
virtio
w1 w1: send status messages after command processing 2009-01-08 08:31:14 -08:00
watchdog [ARM] omap: watchdog: allow OMAP watchdog driver on OMAP34xx platforms 2009-01-24 16:48:42 +00:00
xen xen: make sysfs files behave as their names suggest 2009-01-29 13:20:36 +01:00
zorro m68k: zorro - Use %pR to print resources 2009-01-12 20:56:43 +01:00
Kconfig
Makefile Merge branch 'drivers-platform' into release 2009-01-09 04:56:56 -05:00