Hi Pankaj, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on net/master] [cannot apply to v5.4-rc3 next-20191014] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Pankaj-Sharma/can-m_can-add-support-for-handling-arbitration-error/20191014-193532 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> coccinelle warnings: (new ones prefixed by >>) >> drivers/net/can/m_can/m_can.c:783:9-10: WARNING: return of 0/1 in function 'is_protocol_err' with return type bool Please review and possibly fold the followup patch. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation