V4L/DVB (6584): Fix read() method

Backport read() fixes from Markus Rechberger.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 3efc05d2df67..672880383de8 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -260,6 +260,7 @@ struct em28xx {
         int vscale;             /* vertical scale factor (see datasheet) */
         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
         int type;
+        unsigned int video_bytesread;   /* Number of bytes read */
 
         unsigned long hash;     /* eeprom hash - for boards with generic ID */
         unsigned long i2c_hash; /* i2c devicelist hash - for boards with generic ID */
@@ -268,6 +269,7 @@ struct em28xx {
         enum em28xx_dev_state state;
         enum em28xx_stream_state stream;
         enum em28xx_io_method io;
+
         /* locks */
         struct mutex lock;
         spinlock_t queue_lock;