Hi Deepak,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.15]
[cannot apply to next-20211109]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Deepak-Kumar-Singh/rpmsg-core-Add-signal-API-support/20211001-003225
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 02d5e016800d082058b3d3b7c3ede136cdc6ddcb
config: arm-randconfig-c002-20211001 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/b1743368f111ecd56fb976dd6dea19d041e3ad4e
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Deepak-Kumar-Singh/rpmsg-core-Add-signal-API-support/20211001-003225
        git checkout b1743368f111ecd56fb976dd6dea19d041e3ad4e
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash drivers/bluetooth/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from drivers/bluetooth/btqcomsmd.c:9:
>> include/linux/rpmsg.h:307:1: error: expected identifier or '(' before '{' token
     307 | {
         | ^
   In file included from drivers/bluetooth/btqcomsmd.c:9:
   include/linux/rpmsg.h:306:19: warning: 'rpmsg_set_flow_control' declared 'static' but never defined [-Wunused-function]
     306 | static inline int rpmsg_set_flow_control(struct rpmsg_endpoint *ept, bool enable);
         |                   ^~~~~~~~~~~~~~~~~~~~~~


vim +307 include/linux/rpmsg.h

   305	
   306	static inline int rpmsg_set_flow_control(struct rpmsg_endpoint *ept, bool enable);
 > 307	{
   308		/* This shouldn't be possible */
   309		WARN_ON(1);
   310	
   311		return -ENXIO;
   312	}
   313	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org