Xin Wang (1): It was really careless of me, earlier I wanted to keep the coding style as close as possible to the rest of the code, so I looked for similar code, e.g., line 4713 of kernel/trace/ring_buffer.c: if (ts && ! (*ts)) and line 1178 of ipc/shm.c: audit_ipc_obj(&(shp->shm_perm)). Now I removed the brackets and it passes the checkpatch.pl script, thanks! -- 2.25.1