Hi!
From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit fd22781648080cc400772b3c68aa6b059d2d5420 ]
Callers are generally not supposed to check the return values from debugfs functions. Debugfs functions never return NULL so this error handling will never trigger. (Historically debugfs functions used to return a mix of NULL and error pointers but it was eventually deemed too complicated for something which wasn't intended to be used in normal situations).
Delete all the error handling.
This is wrong for 4.19.
Memory functions still return NULL here.
Best regards, Pavel