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/?id=141bc97c1bfe31397b2a12e5676d0c2692c8e07e
        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 <l...@intel.com>


"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: sparse: incorrect type in 
>> argument 2 (different address spaces) @@     expected void volatile 
>> [noderef] __iomem *mem @@     got void *addr @@
>> drivers/remoteproc/mtk_scp.c:306:39: sparse:     expected void volatile 
>> [noderef] __iomem *mem
   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 <pih...@chromium.org>
:::::: CC: Bjorn Andersson <bjorn.anders...@linaro.org>

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

Attachment: .config.gz
Description: application/gzip

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