diff mbox

[1/4,media] em28xx_dvb: only call the software filter if data

Message ID 1393840127-22081-1-git-send-email-m.chehab@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mauro Carvalho Chehab March 3, 2014, 9:48 a.m. UTC 
Several URBs will be simply not filled. Don't call the DVB
core software filter for those empty URBs.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---
 drivers/media/usb/em28xx/em28xx-dvb.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c
index c1091c454354..301463f463c6 100644
--- a/drivers/media/usb/em28xx/em28xx-dvb.c
+++ b/drivers/media/usb/em28xx/em28xx-dvb.c
@@ -161,6 +161,8 @@  static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
 				if (urb->status != -EPROTO)
 					continue;
 			}
+			if (!urb->actual_length)
+				continue;
 			dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
 					urb->actual_length);
 		} else {
@@ -170,6 +172,8 @@  static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
 				if (urb->iso_frame_desc[i].status != -EPROTO)
 					continue;
 			}
+			if (!urb->iso_frame_desc[i].actual_length)
+				continue;
 			dvb_dmx_swfilter(&dev->dvb->demux,
 					 urb->transfer_buffer +
 					 urb->iso_frame_desc[i].offset,