diff options
Diffstat (limited to 'drivers/char/apm-emulation.c')
| -rw-r--r-- | drivers/char/apm-emulation.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c index a7346ab97a3c..f4837a893dfa 100644 --- a/drivers/char/apm-emulation.c +++ b/drivers/char/apm-emulation.c @@ -40,10 +40,7 @@ #define APM_MINOR_DEV 134 /* - * See Documentation/Config.help for the configuration options. - * - * Various options can be changed at boot time as follows: - * (We allow underscores for compatibility with the modules code) + * One option can be changed at boot time as follows: * apm=on/off enable/disable APM */ @@ -300,17 +297,13 @@ 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; |