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V4L/DVB (13875): gspca - vc032x: Fix a possible crash with the vc0321 bridge.

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The frame pointer returned by get_i_frame may be NULL when the application
is too slow.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-Francois Moine 2009-12-26 08:41:17 -03:00 committed by Mauro Carvalho Chehab
parent c60503c1db
commit 9501843496
1 changed files with 4 additions and 0 deletions
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4
drivers/media/video/gspca/vc032x.c
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@ -3009,6 +3009,10 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
int l;
frame = gspca_get_i_frame(gspca_dev);
if (frame == NULL) {
gspca_dev->last_packet_type = DISCARD_PACKET;
return;
}
l = frame->data_end - frame->data;
if (len > frame->v4l2_buf.length - l)
len = frame->v4l2_buf.length - l;