Author: Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Some functions like kmalloc/kzalloc return NULL on failure. When NULL represents failure, !x is commonly used. This was done using Coccinelle: @@ expression *e; identifier l1; @@ e = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\)(…); … – e == NULL + !e Signed-off-by: Bhaktipriya Shridhar Signed-off-by: Greg Kroah-Hartman — drivers/staging/rtl8712/rtl871x_ioctl_linux.c | 4 ++– 1 file changed, …