WARNING: Use a single space after To:
#8: 
to:

ERROR: Unrecognized email address: ''
#8: 
to:

WARNING: line length of 81 exceeds 80 columns
#91: FILE: drivers/net/usb/lan78xx.c:1427:
+		netdev_warn(dev->net, "dataport write failed %pe", ERR_PTR(ret));

WARNING: line length of 82 exceeds 80 columns
#140: FILE: drivers/net/usb/lan78xx.c:1495:
+		netdev_warn(dev->net, "multicast write failed %pe", ERR_PTR(ret));

total: 1 errors, 3 warnings, 0 checks, 119 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 5c66ead6e3af ("net: usb: lan78xx: Improve error handling in dataport and multicast writes") 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.