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Subject: [media] gpsca: remove the risk of a division by zero Author: Luis de Bethencourt <[email protected]> Date: Mon Feb 9 07:16:25 2015 -0300 As reported by Peter Kovar, there's a potential risk of a division by zero on calls to jpeg_set_qual() when quality is zero. As quality can't be 0 or lower than that, add an extra clause to cover this special case. Cc: [email protected] Signed-off-by: Luis de Bethencourt <[email protected]> Acked-by: Hans de Goede <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/usb/gspca/topro.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) --- http://git.linuxtv.org/cgit.cgi/media_tree.git/commit/?id=19edae8c6cc7a179ec140429612f581c4c2df8d4 diff --git a/drivers/media/usb/gspca/topro.c b/drivers/media/usb/gspca/topro.c index 5fcd1ee..c70ff40 100644 --- a/drivers/media/usb/gspca/topro.c +++ b/drivers/media/usb/gspca/topro.c @@ -969,7 +969,9 @@ static void jpeg_set_qual(u8 *jpeg_hdr, { int i, sc; - if (quality < 50) + if (quality <= 0) + sc = 5000; + else if (quality < 50) sc = 5000 / quality; else sc = 200 - quality * 2; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
