Hi Xianting, Thank you for the patch! Yet something to improve: [auto build test ERROR on tty/tty-testing] [also build test ERROR on char-misc/char-misc-testing soc/for-next linus/master v5.14-rc3 next-20210730] [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/Xianting-Tian/tty-hvc-pass-DMA-capable-memory-to-put_chars/20210801-131800 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing config: sparc64-allyesconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 10.3.0 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/b33d1f04db78e1bfa5d798b676bd1062e2d54afc git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xianting-Tian/tty-hvc-pass-DMA-capable-memory-to-put_chars/20210801-131800 git checkout b33d1f04db78e1bfa5d798b676bd1062e2d54afc # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=sparc64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/tty/hvc/hvc_console.c: In function 'hvc_poll_put_char': >> drivers/tty/hvc/hvc_console.c:888:14: error: 'ch' redeclared as different kind of symbol 888 | static char ch = ch; | ^~ drivers/tty/hvc/hvc_console.c:883:73: note: previous definition of 'ch' was here 883 | static void hvc_poll_put_char(struct tty_driver *driver, int line, char ch) | ~~~~~^~ >> drivers/tty/hvc/hvc_console.c:888:19: error: initializer element is not constant 888 | static char ch = ch; | ^~ vim +/ch +888 drivers/tty/hvc/hvc_console.c 882 883 static void hvc_poll_put_char(struct tty_driver *driver, int line, char ch) 884 { 885 struct tty_struct *tty = driver->ttys[0]; 886 struct hvc_struct *hp = tty->driver_data; 887 int n; > 888 static char ch = ch; 889 890 do { 891 n = hp->ops->put_chars(hp->vtermno, &ch, 1); 892 } while (n <= 0); 893 } 894 #endif 895 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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