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Subject[asahilinux:pr/22 96/189] drivers/platform/apple/smc_core.c:202:26: sparse: sparse: cast to restricted __be32
tree:   https://github.com/AsahiLinux/linux pr/22
head: 7ee315306d1a3b0da8cf2a53e7f55889d0e7f034
commit: 322906b25cbf56148e4b57a6368f6d715e48b022 [96/189] platform/apple: Add new Apple Mac SMC driver
config: arm64-randconfig-s032-20220327 (https://download.01.org/0day-ci/archive/20220328/202203280041.0z3zY6Vd-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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: v0.6.4-dirty
# https://github.com/AsahiLinux/linux/commit/322906b25cbf56148e4b57a6368f6d715e48b022
git remote add asahilinux https://github.com/AsahiLinux/linux
git fetch --no-tags asahilinux pr/22
git checkout 322906b25cbf56148e4b57a6368f6d715e48b022
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash

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/platform/apple/smc_core.c:202:26: sparse: sparse: cast to restricted __be32

vim +202 drivers/platform/apple/smc_core.c

182
183 struct apple_smc *apple_smc_probe(struct device *dev, const struct apple_smc_backend_ops *ops, void *cookie)
184 {
185 struct apple_smc *smc;
186 u32 count;
187 int ret;
188
189 smc = devm_kzalloc(dev, sizeof(*smc), GFP_KERNEL);
190 if (!smc)
191 return ERR_PTR(-ENOMEM);
192
193 smc->dev = dev;
194 smc->be_cookie = cookie;
195 smc->be = ops;
196 mutex_init(&smc->mutex);
197 RAW_INIT_NOTIFIER_HEAD(&smc->event_handlers);
198
199 ret = apple_smc_read_u32(smc, SMC_KEY(#KEY), &count);
200 if (ret)
201 return ERR_PTR(dev_err_probe(dev, ret, "Failed to get key count"));
> 202 smc->key_count = be32_to_cpu(count);
203
204 ret = apple_smc_get_key_by_index(smc, 0, &smc->first_key);
205 if (ret)
206 return ERR_PTR(dev_err_probe(dev, ret, "Failed to get first key"));
207
208 ret = apple_smc_get_key_by_index(smc, smc->key_count - 1, &smc->last_key);
209 if (ret)
210 return ERR_PTR(dev_err_probe(dev, ret, "Failed to get last key"));
211
212 /* Enable notifications */
213 apple_smc_write_flag(smc, SMC_KEY(NTAP), 1);
214
215 dev_info(dev, "Initialized (%d keys %p4ch..%p4ch)\n",
216 smc->key_count, &smc->first_key, &smc->last_key);
217
218 dev_set_drvdata(dev, smc);
219
220 ret = mfd_add_devices(dev, -1, apple_smc_devs, ARRAY_SIZE(apple_smc_devs), NULL, 0, NULL);
221 if (ret)
222 return ERR_PTR(dev_err_probe(dev, ret, "Subdevice initialization failed"));
223
224 return smc;
225 }
226 EXPORT_SYMBOL(apple_smc_probe);
227

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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