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[media] gpsca: remove the risk of a division by zero 

As reported by Coverity, there's a potential risk of a division
by zero on some calls to jpeg_set_qual(), if quality is zero.

As quality can't be 0 or lower than that, adds an extra clause
to cover this special case.

Coverity reports: CID#11922280, CID#11922293, CID#11922295

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2014-04-07 10:52:43 -03:00
parent 9b2c06a4f9
commit 32654fba2f
1 changed files with 3 additions and 1 deletions
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4
drivers/media/usb/gspca/jpeg.h
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@ -154,7 +154,9 @@ 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;