summaryrefslogtreecommitdiff
path: root/drivers/char/apm-emulation.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/apm-emulation.c')
-rw-r--r--drivers/char/apm-emulation.c21
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;