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authorXiubo Li <Li.Xiubo@freescale.com>2014-04-30 17:31:08 +0800
committerMark Brown <broonie@linaro.org>2014-04-30 20:33:57 -0700
commitf5727cd31283aa478f7f9396c6eb7b5aceebb869 (patch)
treedb763dd8418489159f01bb5397d7895df81ca610 /Documentation/sh
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
regmap: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
Since we cannot make sure the 'len = pair_size * num_regs' will always be none zero from the users, and then if 'num_regs' equals to zero by mistake or other reasons, the kzalloc() will return ZERO_SIZE_PTR, which equals to ((void *)16). So this patch fix this with just doing the 'len' zero check before calling kzalloc(). Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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