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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 12:03:58 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 12:03:58 +0200
commit73692d9bb58ecc2fa73f4b2bfcf6eadaa6d49a26 (patch)
tree7a7b6cb22d1edaec10c3ae9d961b6e04c37d380c
parent31dced41c6822ce751c033a53502ea4d8d399422 (diff)
parent1d927c3b5a4005a2ebc5356e7e1eec436e15fa22 (diff)
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.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index a7346ab97a3..2a2b8fd708c 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;