tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ee6050c8af96bba2f81e8b0793a1fc2f998fcd20 commit: 552a23a0e5d0a84cecd4687043d8030673981d30 Makefile: Enable -Wcast-function-type date: 12 months ago config: hexagon-randconfig-r031-20221104 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 2bbafe04fe785a9469bea5a3737f8d7d3ce4aca2) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=552a23a0e5d0a84cecd4687043d8030673981d30 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 552a23a0e5d0a84cecd4687043d8030673981d30 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/rtc/ sound/core/seq/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/rtc/rtc-msc313.c:227:38: warning: cast from 'void (*)(struct clk *)' to 'void (*)(void *)' converts to incompatible function type [-Wcast-function-type-strict] ret = devm_add_action_or_reset(dev, (void (*) (void *))clk_disable_unprepare, clk); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. -- >> sound/core/seq/seq_memory.c:154:22: warning: cast from 'int (*)(char **, const void *, int)' to 'snd_seq_dump_func_t' (aka 'int (*)(void *, void *, int)') converts to incompatible function type [-Wcast-function-type-strict] in_kernel ? (snd_seq_dump_func_t)seq_copy_in_kernel : ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/core/seq/seq_memory.c:155:10: warning: cast from 'int (*)(char **, const void *, int)' to 'snd_seq_dump_func_t' (aka 'int (*)(void *, void *, int)') converts to incompatible function type [-Wcast-function-type-strict] (snd_seq_dump_func_t)seq_copy_in_user, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 warnings generated. vim +227 drivers/rtc/rtc-msc313.c be7d9c9161b9c7 Daniel Palmer 2021-08-23 179 be7d9c9161b9c7 Daniel Palmer 2021-08-23 180 static int msc313_rtc_probe(struct platform_device *pdev) be7d9c9161b9c7 Daniel Palmer 2021-08-23 181 { be7d9c9161b9c7 Daniel Palmer 2021-08-23 182 struct device *dev = &pdev->dev; be7d9c9161b9c7 Daniel Palmer 2021-08-23 183 struct msc313_rtc *priv; be7d9c9161b9c7 Daniel Palmer 2021-08-23 184 unsigned long rate; be7d9c9161b9c7 Daniel Palmer 2021-08-23 185 struct clk *clk; be7d9c9161b9c7 Daniel Palmer 2021-08-23 186 int ret; be7d9c9161b9c7 Daniel Palmer 2021-08-23 187 int irq; be7d9c9161b9c7 Daniel Palmer 2021-08-23 188 be7d9c9161b9c7 Daniel Palmer 2021-08-23 189 priv = devm_kzalloc(&pdev->dev, sizeof(struct msc313_rtc), GFP_KERNEL); be7d9c9161b9c7 Daniel Palmer 2021-08-23 190 if (!priv) be7d9c9161b9c7 Daniel Palmer 2021-08-23 191 return -ENOMEM; be7d9c9161b9c7 Daniel Palmer 2021-08-23 192 be7d9c9161b9c7 Daniel Palmer 2021-08-23 193 priv->rtc_base = devm_platform_ioremap_resource(pdev, 0); be7d9c9161b9c7 Daniel Palmer 2021-08-23 194 if (IS_ERR(priv->rtc_base)) be7d9c9161b9c7 Daniel Palmer 2021-08-23 195 return PTR_ERR(priv->rtc_base); be7d9c9161b9c7 Daniel Palmer 2021-08-23 196 be7d9c9161b9c7 Daniel Palmer 2021-08-23 197 irq = platform_get_irq(pdev, 0); be7d9c9161b9c7 Daniel Palmer 2021-08-23 198 if (irq < 0) be7d9c9161b9c7 Daniel Palmer 2021-08-23 199 return -EINVAL; be7d9c9161b9c7 Daniel Palmer 2021-08-23 200 be7d9c9161b9c7 Daniel Palmer 2021-08-23 201 priv->rtc_dev = devm_rtc_allocate_device(dev); be7d9c9161b9c7 Daniel Palmer 2021-08-23 202 if (IS_ERR(priv->rtc_dev)) be7d9c9161b9c7 Daniel Palmer 2021-08-23 203 return PTR_ERR(priv->rtc_dev); be7d9c9161b9c7 Daniel Palmer 2021-08-23 204 be7d9c9161b9c7 Daniel Palmer 2021-08-23 205 priv->rtc_dev->ops = &msc313_rtc_ops; be7d9c9161b9c7 Daniel Palmer 2021-08-23 206 priv->rtc_dev->range_max = U32_MAX; be7d9c9161b9c7 Daniel Palmer 2021-08-23 207 be7d9c9161b9c7 Daniel Palmer 2021-08-23 208 ret = devm_request_irq(dev, irq, msc313_rtc_interrupt, IRQF_SHARED, be7d9c9161b9c7 Daniel Palmer 2021-08-23 209 dev_name(&pdev->dev), &pdev->dev); be7d9c9161b9c7 Daniel Palmer 2021-08-23 210 if (ret) { be7d9c9161b9c7 Daniel Palmer 2021-08-23 211 dev_err(dev, "Could not request IRQ\n"); be7d9c9161b9c7 Daniel Palmer 2021-08-23 212 return ret; be7d9c9161b9c7 Daniel Palmer 2021-08-23 213 } be7d9c9161b9c7 Daniel Palmer 2021-08-23 214 be7d9c9161b9c7 Daniel Palmer 2021-08-23 215 clk = devm_clk_get(dev, NULL); be7d9c9161b9c7 Daniel Palmer 2021-08-23 216 if (IS_ERR(clk)) { be7d9c9161b9c7 Daniel Palmer 2021-08-23 217 dev_err(dev, "No input reference clock\n"); be7d9c9161b9c7 Daniel Palmer 2021-08-23 218 return PTR_ERR(clk); be7d9c9161b9c7 Daniel Palmer 2021-08-23 219 } be7d9c9161b9c7 Daniel Palmer 2021-08-23 220 be7d9c9161b9c7 Daniel Palmer 2021-08-23 221 ret = clk_prepare_enable(clk); be7d9c9161b9c7 Daniel Palmer 2021-08-23 222 if (ret) { be7d9c9161b9c7 Daniel Palmer 2021-08-23 223 dev_err(dev, "Failed to enable the reference clock, %d\n", ret); be7d9c9161b9c7 Daniel Palmer 2021-08-23 224 return ret; be7d9c9161b9c7 Daniel Palmer 2021-08-23 225 } be7d9c9161b9c7 Daniel Palmer 2021-08-23 226 be7d9c9161b9c7 Daniel Palmer 2021-08-23 @227 ret = devm_add_action_or_reset(dev, (void (*) (void *))clk_disable_unprepare, clk); be7d9c9161b9c7 Daniel Palmer 2021-08-23 228 if (ret) be7d9c9161b9c7 Daniel Palmer 2021-08-23 229 return ret; be7d9c9161b9c7 Daniel Palmer 2021-08-23 230 be7d9c9161b9c7 Daniel Palmer 2021-08-23 231 rate = clk_get_rate(clk); be7d9c9161b9c7 Daniel Palmer 2021-08-23 232 writew(rate & 0xFFFF, priv->rtc_base + REG_RTC_FREQ_CW_L); be7d9c9161b9c7 Daniel Palmer 2021-08-23 233 writew((rate >> 16) & 0xFFFF, priv->rtc_base + REG_RTC_FREQ_CW_H); be7d9c9161b9c7 Daniel Palmer 2021-08-23 234 be7d9c9161b9c7 Daniel Palmer 2021-08-23 235 platform_set_drvdata(pdev, priv); be7d9c9161b9c7 Daniel Palmer 2021-08-23 236 be7d9c9161b9c7 Daniel Palmer 2021-08-23 237 return devm_rtc_register_device(priv->rtc_dev); be7d9c9161b9c7 Daniel Palmer 2021-08-23 238 } be7d9c9161b9c7 Daniel Palmer 2021-08-23 239 :::::: The code at line 227 was first introduced by commit :::::: be7d9c9161b9c76edeff15e79edc2f256568fe05 rtc: Add support for the MSTAR MSC313 RTC :::::: TO: Daniel Palmer :::::: CC: Alexandre Belloni -- 0-DAY CI Kernel Test Service https://01.org/lkp