rtc: fix kernel panic on second use of SIGIO nofitication

[linux-2.6-omap-h63xx.git] / drivers / rtc / rtc-dev.c

diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index f118252f3a9f2b921cef3fff96fd1ef890d65b3c..52e2743b04ecf77bb6a975d6c8609fa042025dea 100644 (file)
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -422,6 +422,12 @@ done:
        return err;
 }
 
+static int rtc_dev_fasync(int fd, struct file *file, int on)
+{
+       struct rtc_device *rtc = file->private_data;
+       return fasync_helper(fd, file, on, &rtc->async_queue);
+}
+
 static int rtc_dev_release(struct inode *inode, struct file *file)
 {
        struct rtc_device *rtc = file->private_data;
@@ -434,16 +440,13 @@ static int rtc_dev_release(struct inode *inode, struct file *file)
        if (rtc->ops->release)
                rtc->ops->release(rtc->dev.parent);
 
+       if (file->f_flags & FASYNC)
+               rtc_dev_fasync(-1, file, 0);
+
        clear_bit_unlock(RTC_DEV_BUSY, &rtc->flags);
        return 0;
 }
 
-static int rtc_dev_fasync(int fd, struct file *file, int on)
-{
-       struct rtc_device *rtc = file->private_data;
-       return fasync_helper(fd, file, on, &rtc->async_queue);
-}
-
 static const struct file_operations rtc_dev_fops = {
        .owner          = THIS_MODULE,
        .llseek         = no_llseek,