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[media] em28xx: em28xx_urb_data_copy_vbi(): calculate vbi_size only if needed

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Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Frank Schaefer 2012-11-25 06:37:36 -03:00 committed by Mauro Carvalho Chehab
parent 0455eebfbd
commit 79ff8697e9
1 changed files with 2 additions and 3 deletions
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5
drivers/media/usb/em28xx/em28xx-video.c
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@ -525,7 +525,7 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb)
struct em28xx_buffer *buf, *vbi_buf;
struct em28xx_dmaqueue *dma_q = &dev->vidq;
struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
int xfer_bulk, vbi_size, num_packets, i, rc = 1;
int xfer_bulk, num_packets, i, rc = 1;
unsigned int actual_length, len = 0;
unsigned char *p, *outp = NULL, *vbioutp = NULL;
@ -612,9 +612,8 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb)
/* NOTE: with bulk transfers, intermediate data packets
* have no continuation header */
vbi_size = dev->vbi_width * dev->vbi_height;
if (dev->capture_type == 0) {
int vbi_size = dev->vbi_width * dev->vbi_height;
if (dev->vbi_read >= vbi_size) {
/* We've already read all the VBI data, so
treat the rest as video */