Hi, Thank you for the patch! Perhaps something to improve: url: https://github.com/0day-ci/linux/commits/kholk11-gmail-com/Add-Novatek-NT36xxx-touchscreen-driver/20200927-203756 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next config: i386-randconfig-m021-20201003 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/input/touchscreen/nt36xxx.c:470 nt36xxx_i2c_chip_version_init() warn: calling memset(x, y, ARRAY_SIZE()); vim +470 drivers/input/touchscreen/nt36xxx.c 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 443 static int nt36xxx_i2c_chip_version_init(struct nt36xxx_i2c *ts) 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 444 { 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 445 u8 buf[7] = { 0 }; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 446 int retry = NT36XXX_MAX_RETRIES; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 447 int sz = sizeof(trim_id_table) / sizeof(struct nt36xxx_trim_table); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 448 int i, list, mapid, ret; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 449 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 450 ret = nt36xxx_bootloader_reset(ts); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 451 if (ret < 0) { 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 452 dev_err(&ts->client->dev, "Can't reset the nvt IC\n"); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 453 return ret; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 454 } 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 455 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 456 do { 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 457 ret = nt36xxx_sw_reset_idle(ts); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 458 if (ret < 0) 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 459 continue; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 460 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 461 buf[0] = 0x00; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 462 buf[1] = NT36XXX_CMD_UNLOCK; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 463 nt36xxx_write(ts->client, ts->client->addr, buf, 2); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 464 usleep_range(10000, 11000); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 465 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 466 ret = nt36xxx_set_page(ts, NT36XXX_PAGE_CHIP_INFO); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 467 if (ret < 0) 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 468 continue; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 469 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 @470 memset(buf, 0, ARRAY_SIZE(buf)); memset() should always zero the number of bytes (sizeof(buf)), not the number of elements (ARRAY_SIZE(buf)). For u8, of course, the elements are byte size so it's the same. But if someone uses `grep -w memset $(git ls-files) | grep ARRAY_SIZE` then this will show up as improper code. 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 471 buf[0] = NT36XXX_EVT_CHIPID; 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 472 nt36xxx_read(ts->client, NT36XXX_BLDR_ADDR, buf, 7); 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 473 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 474 /* Compare read chip id with trim list */ 6375d650f6f53aa AngeloGioacchino Del Regno 2020-09-27 475 for (list = 0; list < sz; list++) { --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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