CHECK: Comparison to NULL could be written "buffer"
#54: FILE: drivers/mailbox/pcc.c:320:
+	if (buffer != NULL)

CHECK: Please don't use multiple blank lines
#145: FILE: drivers/mailbox/pcc.c:487:
+
+

CHECK: Please don't use multiple blank lines
#177: FILE: drivers/mailbox/pcc.c:526:
 
+

CHECK: Please don't use multiple blank lines
#190: FILE: drivers/mailbox/pcc.c:539:
+
+

total: 0 errors, 0 warnings, 4 checks, 192 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 e741cb4c7b9f ("mailbox/pcc: support mailbox management of the shared buffer") 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, 0 warnings, 4 checks, 192 lines checked