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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-25 12:03:58 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-25 12:03:58 +0200 |
| commit | 73692d9bb58ecc2fa73f4b2bfcf6eadaa6d49a26 (patch) | |
| tree | 7a7b6cb22d1edaec10c3ae9d961b6e04c37d380c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid (diff) | |
| parent | apm-emulation: use wait_event_freezable() instead of freezer_[do_not_]count() (diff) | |
| download | linux-dev-73692d9bb58ecc2fa73f4b2bfcf6eadaa6d49a26.tar.xz linux-dev-73692d9bb58ecc2fa73f4b2bfcf6eadaa6d49a26.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm:
apm-emulation: use wait_event_freezable() instead of freezer_[do_not_]count()
| -rw-r--r-- | drivers/char/apm-emulation.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c index a7346ab97a3c..2a2b8fd708c1 100644 --- a/drivers/char/apm-emulation.c +++ b/drivers/char/apm-emulation.c @@ -300,17 +300,13 @@ apm_ioctl(struct file *filp, u_int cmd, u_long arg) /* * Wait for the suspend/resume to complete. If there * are pending acknowledges, we wait here for them. + * wait_event_freezable() is interruptible and pending + * signal can cause busy looping. We aren't doing + * anything critical, chill a bit on each iteration. */ - freezer_do_not_count(); - - wait_event(apm_suspend_waitqueue, - as->suspend_state == SUSPEND_DONE); - - /* - * Since we are waiting until the suspend is done, the - * try_to_freeze() in freezer_count() will not trigger - */ - freezer_count(); + while (wait_event_freezable(apm_suspend_waitqueue, + as->suspend_state == SUSPEND_DONE)) + msleep(10); break; case SUSPEND_ACKTO: as->suspend_result = -ETIMEDOUT; |