ERROR: space required before the open parenthesis '('
#109: FILE: drivers/net/veth.c:388:
+	switch(ret) {

WARNING: Prefer using '"%s...", __func__' to using 'veth_xmit', this function's name, in a string
#138: FILE: drivers/net/veth.c:416:
+		net_crit_ratelimited("veth_xmit(%s): Invalid return code(%d)",

total: 1 errors, 1 warnings, 0 checks, 108 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 cea5a055e057 ("veth: apply qdisc backpressure on full ptr_ring to reduce TX drops") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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.