CHECK: spaces preferred around that '+' (ctx:VxV)
#33: FILE: drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c:155:
+#define GRF_BIT(nr)			(BIT(nr) | BIT(nr+16))
                    			                 ^

CHECK: spaces preferred around that '+' (ctx:VxV)
#34: FILE: drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c:156:
+#define GRF_CLR_BIT(nr)			(BIT(nr+16))
                        			       ^

CHECK: Macro argument 'nr' may be better as '(nr)' to avoid precedence issues
#34: FILE: drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c:156:
+#define GRF_CLR_BIT(nr)			(BIT(nr+16))

total: 0 errors, 0 warnings, 3 checks, 150 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 2cae97557798 ("net: stmmac: rk: replace HIWORD_UPDATE() with GRF_FIELD()") 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, 0 warnings, 3 checks, 150 lines checked