Alan Stern 3ca9aebac2 USB: EHCI: use hrtimer for the periodic schedule ... This patch (as1573) adds hrtimer support for managing ehci-hcd's periodic schedule. There are two issues to deal with. First, the schedule's state (on or off) must not be changed until the hardware status has caught up with the current command. This is handled by an hrtimer event that polls at 1-ms intervals to see when the Periodic Schedule Status (PSS) flag matches the Periodic Schedule Enable (PSE) value. Second, the schedule should not be turned off as soon as it becomes empty. Turning the schedule on and off takes time, so we want to wait until the schedule has been empty for a suitable period before turning it off. This is handled by an hrtimer event that gets set to expire 10 ms after the periodic schedule becomes empty. The existing code polls (for up to 1125 us and with interrupts disabled!) to check the status, and doesn't implement a delay before turning off the schedule. Furthermore, if the polling fails then the driver decides that the controller has died. This has caused problems for several people; some controllers can take 10 ms or more to turn off their periodic schedules. This patch fixes these issues. It also makes the "broken_periodic" workaround unnecessary; there is no longer any danger of turning off the periodic schedule after it has been on for less than 1 ms. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-07-16 16:53:16 -07:00
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accessibility
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-07-14 12:44:26 -07:00
amba	arm-soc: driver specific updates	2012-05-26 12:22:27 -07:00
ata	Viresh has moved	2012-06-20 14:39:36 -07:00
atm	solos-pci: Fix DMA support	2012-05-24 16:22:53 -04:00
auxdisplay
base	PM / Sleep: Prevent waiting forever on asynchronous suspend after abort	2012-06-24 23:31:09 +02:00
bcma	bcma: fix null pointer in bcma_core_pci_irq_ctl	2012-06-08 13:47:07 -04:00
block	blk: fix wrong idr_pre_get() error check in loop.c	2012-07-14 15:39:58 -07:00
bluetooth	Bluetooth: btmrvl: Do not send vendor events to bluetooth stack	2012-06-19 00:19:11 -03:00
cdrom
char	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2012-06-18 12:20:36 -07:00
clk	clk: fix parent validation in __clk_set_parent()	2012-07-03 12:05:14 -07:00
clocksource	clocksource: sh_tmu: Use clockevents_config_and_register().	2012-06-11 17:10:16 +09:00
connector
cpufreq
cpuidle
crypto	arm-soc: clock driver changes	2012-05-26 12:42:29 -07:00
dca
devfreq	Power management updates for 3.5	2012-05-23 14:07:06 -07:00
dio
dma	Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma	2012-06-20 22:12:52 -07:00
edac	edac: Do alignment logic properly in edac_align_ptr()	2012-06-11 12:43:16 -03:00
eisa
extcon	extcon: max8997: Add missing kfree for info->edev in max8997_muic_remove()	2012-06-18 16:30:42 -07:00
firewire	IEEE 1394 (FireWire) subsystem updates post v3.4:	2012-05-24 12:57:47 -07:00
firmware
gpio	gpio/gpio-tps65910: gpio_chip.of_node referenced without CONFIG_OF_GPIO defined	2012-07-10 22:53:31 +02:00
gpu	drm/i915: kick any firmware framebuffers before claiming the gtt	2012-07-03 11:18:48 +01:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2012-07-13 10:33:18 -07:00
hsi
hv	Driver core pull for 3.5-rc1	2012-05-22 16:02:13 -07:00
hwmon	hwmon: (it87) Preserve configuration register bits on init	2012-07-12 22:47:37 +02:00
hwspinlock	hwspinlock/core: use global ID to register hwspinlocks on multiple devices	2012-07-07 22:35:30 +03:00
i2c	i2c: Add generic I2C multiplexer using pinctrl API	2012-06-04 16:49:43 +02:00
ide	drivers/ide/ide-cs.c: adjust suspicious bit operation	2012-06-12 15:51:41 -07:00
idle
ieee802154
iio	iio: drop wrong reference from Kconfig	2012-06-14 17:28:46 -07:00
infiniband	Merge branches 'cma' and 'ocrdma' into for-linus	2012-06-24 04:59:59 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2012-07-13 10:33:18 -07:00
iommu	iommu/amd: fix type bug in flush code	2012-07-02 12:11:40 +02:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-05-24 11:54:29 -07:00
leds	leds: heartbeat: fix bug on panic	2012-07-04 15:55:19 +08:00
lguest
macintosh
md	md: One use-after-free bugfix for RAID1	2012-07-13 17:59:33 -07:00
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-07-13 10:29:41 -07:00
memory
memstick
message	Merge branch 'akpm' (Andrew's patch-bomb)	2012-05-31 18:10:18 -07:00
mfd	mfd: Add missing hunk to change palmas irq to clear on read	2012-07-09 00:16:26 +02:00
misc	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-11 16:06:54 -07:00
mmc	mmc: cd-gpio: pass IRQF_ONESHOT to request_threaded_irq()	2012-07-10 23:03:57 -04:00
mtd	Late MTD fixes for 3.5:	2012-07-13 09:56:26 -07:00
net	e1000e: remove use of IP payload checksum	2012-07-01 00:25:32 -07:00
nfc	NFC: potential integer overflow problem in check_crc()	2012-05-25 11:16:16 -04:00
nubus
of	ARM: SoC fixes for 3.5-rc	2012-07-11 12:44:25 -07:00
oprofile	oprofile: perf: use NR_CPUS instead or nr_cpumask_bits for static array	2012-06-21 16:15:11 +02:00
parisc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-05-22 19:22:50 -07:00
parport	Driver core pull for 3.5-rc1	2012-05-22 16:02:13 -07:00
pci	PCI: EHCI: fix crash during suspend on ASUS computers	2012-07-10 09:52:05 -07:00
pcmcia
pinctrl	Merge branch 'akpm' (Andrew's patch-bomb)	2012-06-20 14:41:57 -07:00
platform	drivers/platform/x86/acerhdf.c: correct Boris' mail address	2012-06-07 14:43:55 -07:00
pnp
power	usb: phy: fix return value check of usb_get_phy	2012-07-02 10:40:49 +03:00
pps
ps3
ptp	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-05-22 19:22:50 -07:00
rapidio	rapidio/tsi721: add DMA engine support	2012-05-31 17:49:31 -07:00
regulator	regulator: Fix recursive mutex lockdep warning	2012-07-03 20:25:58 +01:00
remoteproc	remoteproc: fix missing CONFIG_FW_LOADER configurations	2012-07-04 11:01:12 +03:00
rpmsg	rpmsg: make sure inflight messages don't invoke just-removed callbacks	2012-07-04 11:51:59 +03:00
rtc	drivers/rtc/rtc-twl.c: fix threaded IRQ to use IRQF_ONESHOT	2012-07-11 16:04:48 -07:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2012-05-31 10:51:10 -07:00
sbus
scsi	scsi: set to WCE if usb cache quirk is present.	2012-07-16 16:43:49 -07:00
sfi
sh	sh: intc: Kill off special reservation interface.	2012-05-22 19:07:55 +09:00
sn
spi	SPI: fix over-eager devm_xxx() conversion	2012-06-18 11:27:04 +01:00
ssb
staging	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-06-25 14:53:09 -07:00
target	tcm_fc: Resolve suspicious RCU usage warnings	2012-07-06 12:52:09 -07:00
tc
thermal
tty	tty/hvc_opal: Fix debug function name	2012-07-10 19:16:25 +10:00
uio
usb	USB: EHCI: use hrtimer for the periodic schedule	2012-07-16 16:53:16 -07:00
uwb
vhost	vhost: use USER_DS in vhost_worker thread	2012-06-26 21:10:56 -07:00
video	fbdev fixes for 3.5	2012-07-11 16:17:14 -07:00
virt
virtio	virtio-balloon: fix add/get API use	2012-07-09 09:07:22 +09:30
vlynq
vme
w1	arm-soc: clock driver changes	2012-05-26 12:42:29 -07:00
watchdog	watchdog: core: fix WDIOC_GETSTATUS return value	2012-06-28 20:40:56 +02:00
xen	Five bug-fixes:	2012-06-15 17:17:15 -07:00
zorro
Kconfig	Staging tree pull request for 3.5-rc1	2012-05-22 16:34:21 -07:00
Makefile	arm-soc: driver specific updates	2012-05-26 12:22:27 -07:00