WARNING: space prohibited between function name and open parenthesis '('
#33: FILE: include/net/page_pool/types.h:156:
+	netmem_ref (*alloc_netmems)(struct page_pool *pool, gfp_t gfp);

total: 0 errors, 1 warnings, 0 checks, 113 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 221d1c951104 ("net: page_pool: create hooks for custom page providers") 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.
total: 0 errors, 1 warnings, 0 checks, 113 lines checked