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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-08 13:10:57 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-08 13:10:57 -0800
commiteb59c505f8a5906ad2e053d14fab50eb8574fd6f (patch)
treec6e875adc12b481b916e847e8f80b8881a0fb02c /drivers/usb
parent1619ed8f60959829d070d8f39cd2f8ca0e7135ce (diff)
parentc233523b3d392e530033a7587d7970dc62a02361 (diff)
Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
* 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits) PM / Hibernate: Implement compat_ioctl for /dev/snapshot PM / Freezer: fix return value of freezable_schedule_timeout_killable() PM / shmobile: Allow the A4R domain to be turned off at run time PM / input / touchscreen: Make st1232 use device PM QoS constraints PM / QoS: Introduce dev_pm_qos_add_ancestor_request() PM / shmobile: Remove the stay_on flag from SH7372's PM domains PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode PM: Drop generic_subsys_pm_ops PM / Sleep: Remove forward-only callbacks from AMBA bus type PM / Sleep: Remove forward-only callbacks from platform bus type PM: Run the driver callback directly if the subsystem one is not there PM / Sleep: Make pm_op() and pm_noirq_op() return callback pointers PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412. PM / Sleep: Merge internal functions in generic_ops.c PM / Sleep: Simplify generic system suspend callbacks PM / Hibernate: Remove deprecated hibernation snapshot ioctls PM / Sleep: Fix freezer failures due to racy usermodehelper_is_disabled() ARM: S3C64XX: Implement basic power domain support PM / shmobile: Use common always on power domain governor ... Fix up trivial conflict in fs/xfs/xfs_buf.c due to removal of unused XBT_FORCE_SLEEP bit
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/storage/usb.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index c325e69415a1..aa84b3d77274 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -831,7 +831,8 @@ static int usb_stor_scan_thread(void * __us)
dev_dbg(dev, "device found\n");
- set_freezable_with_signal();
+ set_freezable();
+
/*
* Wait for the timeout to expire or for a disconnect
*
@@ -839,16 +840,16 @@ static int usb_stor_scan_thread(void * __us)
* fail to freeze, but we can't be non-freezable either. Nor can
* khubd freeze while waiting for scanning to complete as it may
* hold the device lock, causing a hang when suspending devices.
- * So we request a fake signal when freezing and use
- * interruptible sleep to kick us out of our wait early when
- * freezing happens.
+ * So instead of using wait_event_freezable(), explicitly test
+ * for (DONT_SCAN || freezing) in interruptible wait and proceed
+ * if any of DONT_SCAN, freezing or timeout has happened.
*/
if (delay_use > 0) {
dev_dbg(dev, "waiting for device to settle "
"before scanning\n");
wait_event_interruptible_timeout(us->delay_wait,
- test_bit(US_FLIDX_DONT_SCAN, &us->dflags),
- delay_use * HZ);
+ test_bit(US_FLIDX_DONT_SCAN, &us->dflags) ||
+ freezing(current), delay_use * HZ);
}
/* If the device is still connected, perform the scanning */