Hi Mauro, I love your patch! Yet something to improve: [auto build test ERROR on linuxtv-media/master] [also build test ERROR on next-20210616] [cannot apply to v5.13-rc6] [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/Mauro-Carvalho-Chehab/Address-so... base: git://linuxtv.org/media_tree.git master config: alpha-randconfig-r025-20210617 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 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/3bdf84a7467fed26b64ffe547f5989d73... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mauro-Carvalho-Chehab/Address-some-smatch-warnings/20210617-091510 git checkout 3bdf84a7467fed26b64ffe547f5989d73060a30e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): drivers/media/i2c/adv7842.c: In function 'edid_write_vga_segment': 739 | for (i = 0; && i < blocks * EDID_BLOCK_SIZE; i += I2C_SMBUS_BLOCK_MAX) { | ^ 739 | for (i = 0; && i < blocks * EDID_BLOCK_SIZE; i += I2C_SMBUS_BLOCK_MAX) { | ^~~ vim +/i +739 drivers/media/i2c/adv7842.c 715 716 static int edid_write_vga_segment(struct v4l2_subdev *sd) 717 { 718 struct i2c_client *client = v4l2_get_subdevdata(sd); 719 struct adv7842_state *state = to_state(sd); 720 const u8 *edid = state->vga_edid.edid; 721 u32 blocks = state->vga_edid.blocks; 722 int err = 0; 723 int i; 724 725 v4l2_dbg(2, debug, sd, "%s: write EDID on VGA port\n", __func__); 726 727 if (!state->vga_edid.present) 728 return 0; 729 730 /* HPA disable on port A and B */ 731 io_write_and_or(sd, 0x20, 0xcf, 0x00); 732 733 /* Disable I2C access to internal EDID ram from VGA DDC port */ 734 rep_write_and_or(sd, 0x7f, 0x7f, 0x00); 735 736 /* edid segment pointer '1' for VGA port */ 737 rep_write_and_or(sd, 0x77, 0xef, 0x10); 738 740 err = i2c_smbus_write_i2c_block_data(state->i2c_edid, i, 741 I2C_SMBUS_BLOCK_MAX, 742 edid + i); 743 if (err) 744 return err; 745 } 746 747 /* Calculates the checksums and enables I2C access 748 * to internal EDID ram from VGA DDC port. 749 */ 750 rep_write_and_or(sd, 0x7f, 0x7f, 0x80); 751 752 for (i = 0; i < 1000; i++) { 753 if (rep_read(sd, 0x79) & 0x20) 754 break; 755 mdelay(1); 756 } 757 if (i == 1000) { 758 v4l_err(client, "error enabling edid on VGA port\n"); 759 return -EIO; 760 } 761 762 /* enable hotplug after 200 ms */ 763 schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 5); 764 765 return 0; 766 } 767 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org