Hi Arun, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.4-rc8 next-20191122] [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/rpmsg-core-Add-signal-API-support/20191124-174653 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 6b8a794678763130b7e7d049985008641dc494e8 config: riscv-defconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 7.4.0 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 GCC_VERSION=7.4.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag 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:324:7: warning: this statement may fall through [-Wimplicit-fallthrough=] ret = rpmsg_eptdev_destroy(&eptdev->dev, NULL); ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/rpmsg/rpmsg_char.c:325:2: note: here default: ^~~~~~~ vim +324 drivers/rpmsg/rpmsg_char.c 305 306 static long rpmsg_eptdev_ioctl(struct file *fp, unsigned int cmd, 307 unsigned long arg) 308 { 309 struct rpmsg_eptdev *eptdev = fp->private_data; 310 int ret; 311 312 switch (cmd) { 313 case TIOCMGET: 314 ret = rpmsg_get_signals(eptdev->ept); 315 if (ret >= 0) 316 ret = put_user(ret, (int __user *)arg); 317 break; 318 case TIOCMSET: 319 case TIOCMBIS: 320 case TIOCMBIC: 321 ret = rpmsg_eptdev_tiocmset(fp, cmd, (int __user *)arg); 322 break; 323 case RPMSG_DESTROY_EPT_IOCTL: > 324 ret = rpmsg_eptdev_destroy(&eptdev->dev, NULL); 325 default: 326 ret = -EINVAL; 327 } 328 329 return ret; 330 } 331 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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