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Message-ID: <202410201033.sEvOUguy-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: "Marek Behún" CC: Arnd Bergmann Hi Marek, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 715ca9dd687f89ddaac8ec8ccb3b5e5a30311a99 commit: 74a22fced5a012c57f56d1cf7ea926cc366a2a3a platform: cznic: turris-omnia-mcu: Make poweroff and wakeup code optional date: 2 months ago :::::: branch date: 3 hours ago :::::: commit date: 2 months ago config: arc-randconfig-r073-20241020 (https://download.01.org/0day-ci/archive/20241020/202410201033.sEvOUguy-lkp@intel.com/config) compiler: arceb-elf-gcc (GCC) 13.2.0 If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202410201033.sEvOUguy-lkp@intel.com/ smatch warnings: drivers/platform/cznic/turris-omnia-mcu-gpio.c:257 omnia_ctl_cmd_locked() error: uninitialized symbol 'len'. vim +/len +257 drivers/platform/cznic/turris-omnia-mcu-gpio.c dfa556e45ae9ec Marek Behún 2024-07-01 232 dfa556e45ae9ec Marek Behún 2024-07-01 233 static int omnia_ctl_cmd_locked(struct omnia_mcu *mcu, u8 cmd, u16 val, u16 mask) dfa556e45ae9ec Marek Behún 2024-07-01 234 { dfa556e45ae9ec Marek Behún 2024-07-01 235 unsigned int len; dfa556e45ae9ec Marek Behún 2024-07-01 236 u8 buf[5]; dfa556e45ae9ec Marek Behún 2024-07-01 237 dfa556e45ae9ec Marek Behún 2024-07-01 238 buf[0] = cmd; dfa556e45ae9ec Marek Behún 2024-07-01 239 dfa556e45ae9ec Marek Behún 2024-07-01 240 switch (cmd) { dfa556e45ae9ec Marek Behún 2024-07-01 241 case OMNIA_CMD_GENERAL_CONTROL: dfa556e45ae9ec Marek Behún 2024-07-01 242 buf[1] = val; dfa556e45ae9ec Marek Behún 2024-07-01 243 buf[2] = mask; dfa556e45ae9ec Marek Behún 2024-07-01 244 len = 3; dfa556e45ae9ec Marek Behún 2024-07-01 245 break; dfa556e45ae9ec Marek Behún 2024-07-01 246 dfa556e45ae9ec Marek Behún 2024-07-01 247 case OMNIA_CMD_EXT_CONTROL: dfa556e45ae9ec Marek Behún 2024-07-01 248 put_unaligned_le16(val, &buf[1]); dfa556e45ae9ec Marek Behún 2024-07-01 249 put_unaligned_le16(mask, &buf[3]); dfa556e45ae9ec Marek Behún 2024-07-01 250 len = 5; dfa556e45ae9ec Marek Behún 2024-07-01 251 break; dfa556e45ae9ec Marek Behún 2024-07-01 252 dfa556e45ae9ec Marek Behún 2024-07-01 253 default: dfa556e45ae9ec Marek Behún 2024-07-01 254 BUG(); dfa556e45ae9ec Marek Behún 2024-07-01 255 } dfa556e45ae9ec Marek Behún 2024-07-01 256 dfa556e45ae9ec Marek Behún 2024-07-01 @257 return omnia_cmd_write(mcu->client, buf, len); dfa556e45ae9ec Marek Behún 2024-07-01 258 } dfa556e45ae9ec Marek Behún 2024-07-01 259 :::::: The code at line 257 was first introduced by commit :::::: dfa556e45ae9ecc199e598222debc8f1883a7cce platform: cznic: turris-omnia-mcu: Add support for MCU connected GPIOs :::::: TO: Marek Behún :::::: CC: Arnd Bergmann -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki