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Subjectdrivers/crypto/stm32/stm32-cryp.c:1232:47: sparse: sparse: incorrect type in argument 2 (different base types)
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: dea8dcf2a9fa8cc540136a6cd885c3beece16ec3
commit: bbb2832620ac4e136416aa97af7310636422dea9 crypto: stm32 - Fix sparse warnings
date: 4 months ago
config: arm-randconfig-s032-20201220 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-184-g1b896707-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bbb2832620ac4e136416aa97af7310636422dea9
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout bbb2832620ac4e136416aa97af7310636422dea9
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


"sparse warnings: (new ones prefixed by >>)"
>> drivers/crypto/stm32/stm32-cryp.c:1232:47: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __be32 [usertype] *[assigned] iv @@ got unsigned int [usertype] * @@
drivers/crypto/stm32/stm32-cryp.c:1232:47: sparse: expected restricted __be32 [usertype] *[assigned] iv
drivers/crypto/stm32/stm32-cryp.c:1232:47: sparse: got unsigned int [usertype] *

vim +1232 drivers/crypto/stm32/stm32-cryp.c

9d3b5030bc1e44f Fabien DESSENNE 2018-02-07 1215
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1216 static void stm32_cryp_check_ctr_counter(struct stm32_cryp *cryp)
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1217 {
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1218 u32 cr;
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1219
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1220 if (unlikely(cryp->last_ctr[3] == 0xFFFFFFFF)) {
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1221 cryp->last_ctr[3] = 0;
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1222 cryp->last_ctr[2]++;
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1223 if (!cryp->last_ctr[2]) {
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1224 cryp->last_ctr[1]++;
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1225 if (!cryp->last_ctr[1])
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1226 cryp->last_ctr[0]++;
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1227 }
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1228
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1229 cr = stm32_cryp_read(cryp, CRYP_CR);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1230 stm32_cryp_write(cryp, CRYP_CR, cr & ~CR_CRYPEN);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1231
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 @1232 stm32_cryp_hw_write_iv(cryp, (u32 *)cryp->last_ctr);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1233
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1234 stm32_cryp_write(cryp, CRYP_CR, cr);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1235 }
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1236
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1237 cryp->last_ctr[0] = stm32_cryp_read(cryp, CRYP_IV0LR);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1238 cryp->last_ctr[1] = stm32_cryp_read(cryp, CRYP_IV0RR);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1239 cryp->last_ctr[2] = stm32_cryp_read(cryp, CRYP_IV1LR);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1240 cryp->last_ctr[3] = stm32_cryp_read(cryp, CRYP_IV1RR);
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1241 }
9e054ec21ef8344 Fabien DESSENNE 2017-10-19 1242

:::::: The code at line 1232 was first introduced by commit
:::::: 9e054ec21ef8344345b28603fb272fe999f735db crypto: stm32 - Support for STM32 CRYP crypto module

:::::: TO: Fabien DESSENNE <fabien.dessenne@st.com>
:::::: CC: Herbert Xu <herbert@gondor.apana.org.au>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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