X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Fapm-emulation.c;h=17d54315e146e5d95b794f456a270e2e818b08c6;hb=9b73e76f3cf63379dcf45fcd4f112f5812418d0a;hp=179c7a3b6e750390d1fad74211d3b5e8d42fec1d;hpb=81450b73dde07f473a4a7208b209b4c8b7251d90;p=linux-2.6

diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index 179c7a3b6e..17d54315e1 100644
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -18,8 +18,9 @@
 #include <linux/apm_bios.h>
 #include <linux/capability.h>
 #include <linux/sched.h>
-#include <linux/pm.h>
+#include <linux/suspend.h>
 #include <linux/apm-emulation.h>
+#include <linux/freezer.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
@@ -294,7 +295,6 @@ static int
 apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
 {
 	struct apm_user *as = filp->private_data;
-	unsigned long flags;
 	int err = -EINVAL;
 
 	if (!as->suser || !as->writer)
@@ -329,16 +329,17 @@ apm_ioctl(struct inode * inode, 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.
-			 *
-			 * Note: we need to ensure that the PM subsystem does
-			 * not kick us out of the wait when it suspends the
-			 * threads.
 			 */
-			flags = current->flags;
-			current->flags |= PF_NOFREEZE;
+			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();
 		} else {
 			as->suspend_state = SUSPEND_WAIT;
 			mutex_unlock(&state_lock);
@@ -365,20 +366,11 @@ apm_ioctl(struct inode * inode, 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.
-			 *
-			 * Note: we need to ensure that the PM subsystem does
-			 * not kick us out of the wait when it suspends the
-			 * threads.
 			 */
-			flags = current->flags;
-			current->flags |= PF_NOFREEZE;
-
-			wait_event_interruptible(apm_suspend_waitqueue,
+			wait_event_freezable(apm_suspend_waitqueue,
 					 as->suspend_state == SUSPEND_DONE);
 		}
 
-		current->flags = flags;
-
 		mutex_lock(&state_lock);
 		err = as->suspend_result;
 		as->suspend_state = SUSPEND_NONE;
@@ -598,7 +590,6 @@ static int __init apm_init(void)
 		kapmd_tsk = NULL;
 		return ret;
 	}
-	kapmd_tsk->flags |= PF_NOFREEZE;
 	wake_up_process(kapmd_tsk);
 
 #ifdef CONFIG_PROC_FS