Hi Krzysztof, > I commented on your second patch, but everything is applicable here as well. > You have many useless debug messages. Many incorrect or useless > "if() return" which point to broken driver design (e.g. concurrent access to half > initialized structures where you substitute lack of synchronization with > incorrect "if() return"). Undocumented user interface is one more big trouble. > > I doubt you run checkpatch on this (be sure to run it with --strict and fix almost > everything). > > 1. I use checkpatch but without --strict. I will add it add and check again. 2. Do the debugfs interfaces need to provide a document? I don't find any reference about this. 3. I will follow the comment of second patch to fix this patch Thanks, Stanley