==========
checkpatch - FAILED

ERROR: space required after that ',' (ctx:VxV)
#31: FILE: include/uapi/linux/netlink.h:107:
+#define NLMSG_OK(nlh,len) ((nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
                     ^

total: 1 errors, 0 warnings, 0 checks, 9 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 034e5568206f ("netlink: optimize the NMLSG_OK macro") 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.