Hi Bjorn, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0fa8ee0d9ab95c9350b8b84574824d9a384a9f7d commit: 141bc97c1bfe31397b2a12e5676d0c2692c8e07e remoteproc/mediatek: Remove non-standard dsb() date: 5 weeks ago config: mips-randconfig-s032-20201117 (attached as .config) compiler: mips-linux-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: v0.6.3-107-gaf3512a6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 141bc97c1bfe31397b2a12e5676d0c2692c8e07e # 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=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition drivers/remoteproc/mtk_scp.c:306:39: sparse: got void *addr drivers/remoteproc/mtk_scp.c:307:19: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got void *addr @@ drivers/remoteproc/mtk_scp.c:307:19: sparse: expected void volatile [noderef] __iomem *mem drivers/remoteproc/mtk_scp.c:307:19: sparse: got void *addr drivers/remoteproc/mtk_scp.c:314:19: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got void *addr @@ drivers/remoteproc/mtk_scp.c:314:19: sparse: expected void volatile [noderef] __iomem *mem drivers/remoteproc/mtk_scp.c:314:19: sparse: got void *addr drivers/remoteproc/mtk_scp.c:316:39: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got void *addr @@ drivers/remoteproc/mtk_scp.c:316:39: sparse: expected void volatile [noderef] __iomem *mem drivers/remoteproc/mtk_scp.c:316:39: sparse: got void *addr drivers/remoteproc/mtk_scp.c:327:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:327:44: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:327:44: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:328:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:328:44: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:328:44: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:329:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:329:44: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:329:44: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:330:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:330:44: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:330:44: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:331:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:331:44: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:331:44: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:431:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:431:45: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:431:45: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:432:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:432:45: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:432:45: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:433:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:433:45: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:433:45: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:434:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:434:45: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:434:45: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:435:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem * @@ drivers/remoteproc/mtk_scp.c:435:45: sparse: expected void *addr drivers/remoteproc/mtk_scp.c:435:45: sparse: got void [noderef] __iomem * drivers/remoteproc/mtk_scp.c:559:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *cpu_addr @@ got void * @@ drivers/remoteproc/mtk_scp.c:559:23: sparse: expected void [noderef] __iomem *cpu_addr drivers/remoteproc/mtk_scp.c:559:23: sparse: got void * drivers/remoteproc/mtk_scp.c:572:56: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected void *cpu_addr @@ got void [noderef] __iomem *cpu_addr @@ drivers/remoteproc/mtk_scp.c:572:56: sparse: expected void *cpu_addr drivers/remoteproc/mtk_scp.c:572:56: sparse: got void [noderef] __iomem *cpu_addr vim +306 drivers/remoteproc/mtk_scp.c fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 300 fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 301 static void mt8192_power_on_sram(void *addr) fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 302 { fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 303 int i; fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 304 fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 305 for (i = 31; i >= 0; i--) fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 @306 writel(GENMASK(i, 0), addr); fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 307 writel(0, addr); fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 308 } fd0b6c1ff85a489 Pi-Hsun Shih 2020-09-21 309 :::::: The code at line 306 was first introduced by commit :::::: fd0b6c1ff85a489bcf1bcf58af64da1aeffd39f0 remoteproc/mediatek: Add support for mt8192 SCP :::::: TO: Pi-Hsun Shih <pihsun(a)chromium.org&gt; :::::: CC: Bjorn Andersson <bjorn.andersson(a)linaro.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org