ASoC: core: fix possible ZERO_SIZE_PTR pointer dereferencing error.

Since we cannot make sure the 'params->num_regs' will always be none
zero here, and then if it equals to zero, the kmemdup() will return
ZERO_SIZE_PTR, which equals to ((void *)16).

So this patch fix this with just doing the zero check before calling

Signed-off-by: Xiubo Li <>
Signed-off-by: Mark Brown <>
1 file changed