WARNING: line length of 89 exceeds 80 columns
#41: FILE: drivers/net/can/rcar/rcar_canfd.c:679:
+	unsigned int shift = reg_gen4(gpriv, 16, 24) - (ch & 1) * reg_gen4(gpriv, 16, 8);

total: 0 errors, 1 warnings, 0 checks, 42 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 c6b744a0cebb ("can: rcar_canfd: Add rcar_canfd_setrnc()") 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, 42 lines checked