---

yaml --- r: 25169 b: refs/heads/master c: 5e85bd0 h: refs/heads/master i: 25167: 8d302c0 v: v3
git-mirror · Apr 2, 2006 · 92d0f2f · 92d0f2f
1 parent 31289f0
commit 92d0f2f
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Showing 2 changed files with 10 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2f03ee8e6bd7c6f40a1a0583662308e002d357da
+refs/heads/master: 5e85bd057f0cb29881e3d55d29f48bb55bd2f450
diff --git a/trunk/drivers/media/dvb/dvb-core/dmxdev.c b/trunk/drivers/media/dvb/dvb-core/dmxdev.c
@@ -141,12 +141,18 @@ static int dvb_dvr_open(struct inode *inode, struct file *file)
 	}
 
 	if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
-		void *mem = vmalloc(DVR_BUFFER_SIZE);
+		void *mem;
+		if (!dvbdev->readers) {
+			mutex_unlock(&dmxdev->mutex);
+			return -EBUSY;
+		}
+		mem = vmalloc(DVR_BUFFER_SIZE);
 		if (!mem) {
 			mutex_unlock(&dmxdev->mutex);
 			return -ENOMEM;
 		}
 		dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
+		dvbdev->readers--;
 	}
 
 	if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
@@ -184,6 +190,7 @@ static int dvb_dvr_release(struct inode *inode, struct file *file)
 						dmxdev->dvr_orig_fe);
 	}
 	if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
+		dvbdev->readers++;
 		if (dmxdev->dvr_buffer.data) {
 			void *mem = dmxdev->dvr_buffer.data;
 			mb();
@@ -1029,8 +1036,7 @@ static struct file_operations dvb_dvr_fops = {
 
 static struct dvb_device dvbdev_dvr = {
 	.priv = NULL,
-	.users = 1,
-	.writers = 1,
+	.readers = 1,
 	.fops = &dvb_dvr_fops
 };