tree: https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-mem-ecc head: 5966bd4f59edbbe5873b1b4637ed50f258ced0b2 commit: b78baf1891f0b7c3f0e2e3e6022eab38ee6c871f [14/16] mtd: nand: mxic-ecc: Add Macronix external ECC engine support config: i386-randconfig-m021-20211227 (https://download.01.org/0day-ci/archive/20211227/202112271621.cNxEVvN6-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: drivers/mtd/nand/ecc-mxic.c:395 mxic_ecc_data_xfer_wait_for_completion() error: uninitialized symbol 'val'. drivers/mtd/nand/ecc-mxic.c:548 mxic_ecc_prepare_io_req_external() error: uninitialized symbol 'ret'. vim +/val +395 drivers/mtd/nand/ecc-mxic.c b78baf1891f0b7 Miquel Raynal 2021-12-16 377 static int mxic_ecc_data_xfer_wait_for_completion(struct mxic_ecc_engine *mxic) b78baf1891f0b7 Miquel Raynal 2021-12-16 378 { b78baf1891f0b7 Miquel Raynal 2021-12-16 379 u32 val; b78baf1891f0b7 Miquel Raynal 2021-12-16 380 int ret; b78baf1891f0b7 Miquel Raynal 2021-12-16 381 b78baf1891f0b7 Miquel Raynal 2021-12-16 382 if (mxic->irq) { b78baf1891f0b7 Miquel Raynal 2021-12-16 383 reinit_completion(&mxic->complete); b78baf1891f0b7 Miquel Raynal 2021-12-16 384 mxic_ecc_enable_int(mxic); b78baf1891f0b7 Miquel Raynal 2021-12-16 385 ret = wait_for_completion_timeout(&mxic->complete, b78baf1891f0b7 Miquel Raynal 2021-12-16 386 msecs_to_jiffies(1000)); b78baf1891f0b7 Miquel Raynal 2021-12-16 387 mxic_ecc_disable_int(mxic); "val" not set on this path. b78baf1891f0b7 Miquel Raynal 2021-12-16 388 } else { b78baf1891f0b7 Miquel Raynal 2021-12-16 389 ret = readl_poll_timeout(mxic->regs + INTRPT_STS, val, b78baf1891f0b7 Miquel Raynal 2021-12-16 390 val & TRANS_CMPLT, 10, USEC_PER_SEC); b78baf1891f0b7 Miquel Raynal 2021-12-16 391 writel(val, mxic->regs + INTRPT_STS); b78baf1891f0b7 Miquel Raynal 2021-12-16 392 } b78baf1891f0b7 Miquel Raynal 2021-12-16 393 b78baf1891f0b7 Miquel Raynal 2021-12-16 394 if (ret) { b78baf1891f0b7 Miquel Raynal 2021-12-16 @395 dev_err(mxic->dev, "Timeout on data xfer completion (sts 0x%08x)\n", val); ^^^ b78baf1891f0b7 Miquel Raynal 2021-12-16 396 return -ETIMEDOUT; b78baf1891f0b7 Miquel Raynal 2021-12-16 397 } b78baf1891f0b7 Miquel Raynal 2021-12-16 398 b78baf1891f0b7 Miquel Raynal 2021-12-16 399 return 0; b78baf1891f0b7 Miquel Raynal 2021-12-16 400 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org