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| author | Andrey Utkin <andrey.krieger.utkin@gmail.com> | 2014-07-17 13:27:16 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-21 19:31:58 -0300 |
| commit | 7fcec4c14b15684b0853c9ebc4090c19adc9a1f6 (patch) | |
| tree | b2534340758b580d9cd27353eefb310f3ce4051b /drivers/staging | |
| parent | 632f2b0db9dabbaa5835b50a75a3a1639d6f6f38 (diff) | |
| download | linux-next-7fcec4c14b15684b0853c9ebc4090c19adc9a1f6.tar.gz | |
[media] staging/media/davinci_vpfe/dm365_ipipeif.c: fix negativity check
[linux-3.16-rc5/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c:210]:
(style) Checking if unsigned variable 'val' is less than zero.
val = get_oneshot_mode(ipipeif->input);
if (val < 0) {
pr_err("ipipeif: links setup required");
return -EINVAL;
}
but
static int get_oneshot_mode(enum ipipeif_input_entity input)
Introduced temporary variable for negativity check.
"val" is afterwards used in a lot of bitwise operations, so changing its type
to signed is not safe, according to CERT C Secure Coding Standards chapter
INT13-C: "Use bitwise operators only on unsigned operands"
https://www.securecoding.cert.org/confluence/display/seccode/INT13-C.+Use+bitwise+operators+only+on+unsigned+operands
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80521
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c index 59540cd4bb98..6d4893b44c1f 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c @@ -196,6 +196,7 @@ static int ipipeif_hw_setup(struct v4l2_subdev *sd) int data_shift; int pack_mode; int source1; + int tmp; ipipeif_base_addr = ipipeif->ipipeif_base_addr; @@ -206,8 +207,8 @@ static int ipipeif_hw_setup(struct v4l2_subdev *sd) outformat = &ipipeif->formats[IPIPEIF_PAD_SOURCE]; /* Combine all the fields to make CFG1 register of IPIPEIF */ - val = get_oneshot_mode(ipipeif->input); - if (val < 0) { + tmp = val = get_oneshot_mode(ipipeif->input); + if (tmp < 0) { pr_err("ipipeif: links setup required"); return -EINVAL; } |