WARNING: space prohibited between function name and open parenthesis '('
#41: FILE: kernel/bpf/verifier.c:17628:
+	     (BPF_SRC(insn->code) == BPF_X && register_is_null (src_reg)))) {

total: 0 errors, 1 warnings, 0 checks, 18 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 888e148e12d2 ("bpf: detect non null pointer with register operand in JEQ/JNE.") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 1 warnings, 0 checks, 18 lines checked