Hi Arun, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on linux/master v5.7-rc5 next-20200512] [cannot apply to rpmsg/for-next] [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/Arun-Kumar-Neelakantam/Add-TIOCM-Signals-support-for-RPMSG-char-devices/20200513-134544 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 24085f70a6e1b0cb647ec92623284641d8270637 config: alpha-randconfig-r012-20200513 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/rpmsg/rpmsg_char.c: In function 'rpmsg_eptdev_ioctl': >> drivers/rpmsg/rpmsg_char.c:322:9: warning: this statement may fall through [-Wimplicit-fallthrough=] 322 | ret = rpmsg_eptdev_destroy(&eptdev->dev, NULL); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/rpmsg/rpmsg_char.c:323:2: note: here 323 | default: | ^~~~~~~ vim +322 drivers/rpmsg/rpmsg_char.c 303 304 static long rpmsg_eptdev_ioctl(struct file *fp, unsigned int cmd, 305 unsigned long arg) 306 { 307 struct rpmsg_eptdev *eptdev = fp->private_data; 308 int ret; 309 310 switch (cmd) { 311 case TIOCMGET: 312 ret = rpmsg_get_signals(eptdev->ept); 313 if (ret >= 0) 314 ret = put_user(ret, (int __user *)arg); 315 break; 316 case TIOCMSET: 317 case TIOCMBIS: 318 case TIOCMBIC: 319 ret = rpmsg_eptdev_tiocmset(fp, cmd, (int __user *)arg); 320 break; 321 case RPMSG_DESTROY_EPT_IOCTL: > 322 ret = rpmsg_eptdev_destroy(&eptdev->dev, NULL); 323 default: 324 ret = -EINVAL; 325 } 326 327 return ret; 328 } 329 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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