X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Fgenrtc.c;h=69f0a2993af0f7456b118bcaa0931e7730751067;hb=23d077e28127ea96408032edcf9dd7062a0daaa3;hp=49f914e7921636c96bd363c9b95fcc1fb307257d;hpb=6ec129c3a2f8b38bc37e42348470ccfcb7460146;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
index 49f914e7921..69f0a2993af 100644
--- a/drivers/char/genrtc.c
+++ b/drivers/char/genrtc.c
@@ -12,7 +12,7 @@
  *
  *	This driver allows use of the real time clock (built into
  *	nearly all computers) from user space. It exports the /dev/rtc
- *	interface supporting various ioctl() and also the /proc/dev/rtc
+ *	interface supporting various ioctl() and also the /proc/driver/rtc
  *	pseudo-file for status information.
  *
  *	The ioctls can be used to set the interrupt behaviour where
@@ -173,7 +173,6 @@ static void gen_rtc_interrupt(unsigned long arg)
 static ssize_t gen_rtc_read(struct file *file, char __user *buf,
 			size_t count, loff_t *ppos)
 {
-	DECLARE_WAITQUEUE(wait, current);
 	unsigned long data;
 	ssize_t retval;
 
@@ -183,18 +182,10 @@ static ssize_t gen_rtc_read(struct file *file, char __user *buf,
 	if (file->f_flags & O_NONBLOCK && !gen_rtc_irq_data)
 		return -EAGAIN;
 
-	add_wait_queue(&gen_rtc_wait, &wait);
-	retval = -ERESTARTSYS;
-
-	while (1) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		data = xchg(&gen_rtc_irq_data, 0);
-		if (data)
-			break;
-		if (signal_pending(current))
-			goto out;
-		schedule();
-	}
+	retval = wait_event_interruptible(gen_rtc_wait,
+			(data = xchg(&gen_rtc_irq_data, 0)));
+	if (retval)
+		goto out;
 
 	/* first test allows optimizer to nuke this case for 32-bit machines */
 	if (sizeof (int) != sizeof (long) && count == sizeof (unsigned int)) {
@@ -206,10 +197,7 @@ static ssize_t gen_rtc_read(struct file *file, char __user *buf,
 		retval = put_user(data, (unsigned long __user *)buf) ?:
 			sizeof(unsigned long);
 	}
- out:
-	__set_current_state(TASK_RUNNING);
-	remove_wait_queue(&gen_rtc_wait, &wait);
-
+out:
 	return retval;
 }
 
@@ -377,7 +365,7 @@ static int gen_rtc_release(struct inode *inode, struct file *file)
 #ifdef CONFIG_PROC_FS
 
 /*
- *	Info exported via "/proc/rtc".
+ *	Info exported via "/proc/driver/rtc".
  */
 
 static int gen_rtc_proc_output(char *buf)