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Subject[mtd:spi-mem-ecc 14/16] drivers/mtd/nand/ecc-mxic.c:395 mxic_ecc_data_xfer_wait_for_completion() error: uninitialized symbol 'val'.
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-lkp@intel.com/config)
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@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

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

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