WARNING: Unknown commit id '42da09fdf2bb', maybe rebased or not pulled?
#26: 
Fixes: 42da09fdf2bb ("tcp_cubic: fix to match Reno additive increment")

WARNING: line length of 86 exceeds 80 columns
#52: FILE: net/ipv4/tcp_cubic.c:310:
+			delta = (cwnd * scale) >> 3;	/* CUBIC additive increment */

WARNING: line length of 85 exceeds 80 columns
#54: FILE: net/ipv4/tcp_cubic.c:312:
+			delta = cwnd;			/* Reno additive increment */

total: 0 errors, 3 warnings, 0 checks, 25 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 b5816c7c08ce ("tcp_cubic: fix to match Reno additive increment") 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, 3 warnings, 0 checks, 25 lines checked