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(parent: ad16202) | patch
pwm: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
authorXiubo Li <Li.Xiubo@freescale.com>
Mon, 18 Aug 2014 09:08:44 +0000 (17:08 +0800)
committerThierry Reding <thierry.reding@gmail.com>
Mon, 25 Aug 2014 12:38:12 +0000 (14:38 +0200)
commit533acc0e8df7d6553f11cf91c177211cb6037968
tree812cd4e995141cfe2c1ce2533f52f4017d5af6b1tree | snapshot (tar.gz zip)
parentad16202de8d884c10ef7637ea3982953519c2418commit | diff
pwm: Fix possible ZERO_SIZE_PTR pointer dereferencing error.

Since we cannot make sure the 'chip->npwm' will always be none zero here,
and then if either equal to zero, the kzalloc() will return ZERO_SIZE_PTR,
which equals to ((void *)16).

So this patch fix this with just doing the zero check before calling kzalloc().

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
drivers/pwm/core.c diff | blob | blame | history