[PATCH] mtd: rawnand: protect access to rawnand devices while in suspend
kernel test robot
lkp at intel.com
Mon Dec 20 10:54:45 PST 2021
Hi Sean,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on mtd/nand/next]
[also build test WARNING on linux/master linus/master v5.16-rc6 next-20211220]
[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/Sean-Nyekjaer/mtd-rawnand-protect-access-to-rawnand-devices-while-in-suspend/20211220-210300
base: https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next
config: mips-randconfig-r002-20211220 (https://download.01.org/0day-ci/archive/20211221/202112210255.fmm6tiKT-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 555eacf75f21cd1dfc6363d73ad187b730349543)
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
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://github.com/0day-ci/linux/commit/4820bae9bf9bca82933f29066b18ea85f8c06178
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Sean-Nyekjaer/mtd-rawnand-protect-access-to-rawnand-devices-while-in-suspend/20211220-210300
git checkout 4820bae9bf9bca82933f29066b18ea85f8c06178
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/mtd/nand/raw/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>
All warnings (new ones prefixed by >>):
>> drivers/mtd/nand/raw/nand_base.c:4426:2: warning: variable 'ret' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
default:
^~~~~~~
drivers/mtd/nand/raw/nand_base.c:4437:9: note: uninitialized use occurs here
return ret;
^~~
drivers/mtd/nand/raw/nand_base.c:4414:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
1 warning generated.
vim +/ret +4426 drivers/mtd/nand/raw/nand_base.c
2af7c653993199 drivers/mtd/nand/nand_base.c Simon Kagstrom 2009-10-05 4403
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4404 /**
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4405 * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4406 * @mtd: MTD device structure
844d3b427ef1a4 drivers/mtd/nand/nand_base.c Randy Dunlap 2006-06-28 4407 * @to: offset to write to
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4408 * @ops: oob operation description structure
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4409 */
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4410 static int nand_write_oob(struct mtd_info *mtd, loff_t to,
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4411 struct mtd_oob_ops *ops)
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4412 {
0813621ba898aa drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-11-11 4413 struct nand_chip *chip = mtd_to_nand(mtd);
80107e764846a6 drivers/mtd/nand/raw/nand_base.c Colin Ian King 2019-07-31 4414 int ret;
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4415
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4416 ops->retlen = 0;
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4417
4820bae9bf9bca drivers/mtd/nand/raw/nand_base.c Sean Nyekjaer 2021-12-20 4418 nand_get_device(chip);
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4419
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4420 switch (ops->mode) {
0612b9ddc2eeda drivers/mtd/nand/nand_base.c Brian Norris 2011-08-30 4421 case MTD_OPS_PLACE_OOB:
0612b9ddc2eeda drivers/mtd/nand/nand_base.c Brian Norris 2011-08-30 4422 case MTD_OPS_AUTO_OOB:
0612b9ddc2eeda drivers/mtd/nand/nand_base.c Brian Norris 2011-08-30 4423 case MTD_OPS_RAW:
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4424 break;
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4425
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 @4426 default:
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4427 goto out;
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4428 }
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4429
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4430 if (!ops->datbuf)
0813621ba898aa drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-11-11 4431 ret = nand_do_write_oob(chip, to, ops);
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4432 else
0813621ba898aa drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-11-11 4433 ret = nand_do_write_ops(chip, to, ops);
8593fbc68b0df1 drivers/mtd/nand/nand_base.c Thomas Gleixner 2006-05-29 4434
^1da177e4c3f41 drivers/mtd/nand/nand_base.c Linus Torvalds 2005-04-16 4435 out:
0813621ba898aa drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-11-11 4436 nand_release_device(chip);
^1da177e4c3f41 drivers/mtd/nand/nand_base.c Linus Torvalds 2005-04-16 4437 return ret;
^1da177e4c3f41 drivers/mtd/nand/nand_base.c Linus Torvalds 2005-04-16 4438 }
^1da177e4c3f41 drivers/mtd/nand/nand_base.c Linus Torvalds 2005-04-16 4439
---
0-DAY CI Kernel Test Service, Intel Corporation
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