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[media] em28xx_dvb: only call the software filter if data

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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>
This commit is contained in:
Mauro Carvalho Chehab 2014-03-02 08:20:54 -03:00
parent cd701c8975
commit ffdeca885e
1 changed files with 4 additions and 0 deletions
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4
drivers/media/usb/em28xx/em28xx-dvb.c
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@ -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,