Commit d6d4c0e0 authored by Luis de Bethencourt's avatar Luis de Bethencourt Committed by Mauro Carvalho Chehab
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[media] gpsca: remove the risk of a division by zero 



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.

Signed-off-by: default avatarLuis de Bethencourt <luis.bg@samsung.com>
Acked-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 4bad5d2d

drivers/media/usb/gspca/topro.c

+3 −1
Original line number Diff line number Diff line
@@ -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;