On Thu, Dec 19, 2019 at 03:24:01PM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing > head: 82cfd2e62b354840af6a045e084f6e9e7c49584d > commit: 1997e9dfdc84c8f73d6fc318355cf9e313aba183 [23/75] serial_core: Un-ifdef sysrq SUPPORT_SYSRQ > config: arm-randconfig-a001-20191219 (attached as .config) > compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 1997e9dfdc84c8f73d6fc318355cf9e313aba183 > # save the attached .config to linux build tree > GCC_VERSION=7.5.0 make.cross ARCH=arm > > If you fix the issue, kindly add following tag > Reported-by: kbuild test robot <lkp@xxxxxxxxx> > > All error/warnings (new ones prefixed by >>): > > In file included from include/linux/kernel.h:11:0, > from include/linux/list.h:9, > from include/linux/module.h:12, > from drivers/tty/serial/21285.c:7: > drivers/tty/serial/21285.c: In function 'serial21285_stop_tx': > >> drivers/tty/serial/21285.c:44:41: error: subscripted value is neither array nor pointer nor vector > #define tx_enabled(port) ((port)->unused[0]) > ^ Ugh, this driver did the same hack the samsung_tty driver did! That's where samsung got the idea. I'll go fix this up as well... thanks, greg k-h