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Kangjie Lu authored
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 <kjlu@umn.edu> Signed-off-by:
David S. Miller <davem@davemloft.net>
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