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| author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-04-07 10:52:43 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-04-08 11:01:12 -0300 |
| commit | 32654fba2fdb417390efb1af29f1b5693bc91397 (patch) | |
| tree | 8457a161db47985c2b1f571fc5cd4e5b89d0a109 /drivers/media | |
| parent | 9b2c06a4f91ce23141c58fbecb064235c06d699f (diff) | |
| download | linux-32654fba2fdb417390efb1af29f1b5693bc91397.tar.gz linux-32654fba2fdb417390efb1af29f1b5693bc91397.tar.bz2 linux-32654fba2fdb417390efb1af29f1b5693bc91397.zip | |
[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>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/usb/gspca/jpeg.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/media/usb/gspca/jpeg.h b/drivers/media/usb/gspca/jpeg.h index ab54910418b4..0aa2b671faa4 100644 --- a/drivers/media/usb/gspca/jpeg.h +++ b/drivers/media/usb/gspca/jpeg.h @@ -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; |