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kzalloc could return NULL. Hence add a check to avoid NULL pointer dereference. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Cc: Stable <stable@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>