From: Kangjie Lu <k...@umn.edu> Date: Wed, 26 Dec 2018 00:31:08 -0600
> When acpi_match_device fails, its return value is NULL. Directly using > the return value without a check may result in a NULL-pointer > dereference. The fix checks if acpi_match_device fails, and if so, > returns -EINVAL. > > Signed-off-by: Kangjie Lu <k...@umn.edu> Applied.
