linux-kernel - drivers/remoteproc/stm32_rproc.c:109:12: sparse: sparse: incorrect type in assignment (different address spaces)

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Message-ID: <202006280404.SKSLLNUN%lkp@intel.com>
Date:   Sun, 28 Jun 2020 04:57:07 +0800
From:   kernel test robot <lkp@...el.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: drivers/remoteproc/stm32_rproc.c:109:12: sparse: sparse: incorrect
 type in assignment (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4e99b32169e84b4ece5a1d74eb0b7e4ef07866b3
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date:   9 days ago
config: arm-randconfig-s031-20200628 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-dirty
        git checkout 670d0a4b10704667765f7d18f7592993d02783aa
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=arm CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/remoteproc/stm32_rproc.c:109:12: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *va @@     got void [noderef] __iomem * @@
   drivers/remoteproc/stm32_rproc.c:109:12: sparse:     expected void *va
>> drivers/remoteproc/stm32_rproc.c:109:12: sparse:     got void [noderef] __iomem *
>> drivers/remoteproc/stm32_rproc.c:126:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *iomem_cookie @@     got void *va @@
>> drivers/remoteproc/stm32_rproc.c:126:20: sparse:     expected void volatile [noderef] __iomem *iomem_cookie
   drivers/remoteproc/stm32_rproc.c:126:20: sparse:     got void *va

vim +109 drivers/remoteproc/stm32_rproc.c

13140de09cc2dd Fabien Dessenne 2019-05-14  101  
13140de09cc2dd Fabien Dessenne 2019-05-14  102  static int stm32_rproc_mem_alloc(struct rproc *rproc,
13140de09cc2dd Fabien Dessenne 2019-05-14  103  				 struct rproc_mem_entry *mem)
13140de09cc2dd Fabien Dessenne 2019-05-14  104  {
13140de09cc2dd Fabien Dessenne 2019-05-14  105  	struct device *dev = rproc->dev.parent;
13140de09cc2dd Fabien Dessenne 2019-05-14  106  	void *va;
13140de09cc2dd Fabien Dessenne 2019-05-14  107  
13140de09cc2dd Fabien Dessenne 2019-05-14  108  	dev_dbg(dev, "map memory: %pa+%x\n", &mem->dma, mem->len);
13140de09cc2dd Fabien Dessenne 2019-05-14 @109  	va = ioremap_wc(mem->dma, mem->len);
13140de09cc2dd Fabien Dessenne 2019-05-14  110  	if (IS_ERR_OR_NULL(va)) {
13140de09cc2dd Fabien Dessenne 2019-05-14  111  		dev_err(dev, "Unable to map memory region: %pa+%x\n",
13140de09cc2dd Fabien Dessenne 2019-05-14  112  			&mem->dma, mem->len);
13140de09cc2dd Fabien Dessenne 2019-05-14  113  		return -ENOMEM;
13140de09cc2dd Fabien Dessenne 2019-05-14  114  	}
13140de09cc2dd Fabien Dessenne 2019-05-14  115  
13140de09cc2dd Fabien Dessenne 2019-05-14  116  	/* Update memory entry va */
13140de09cc2dd Fabien Dessenne 2019-05-14  117  	mem->va = va;
13140de09cc2dd Fabien Dessenne 2019-05-14  118  
13140de09cc2dd Fabien Dessenne 2019-05-14  119  	return 0;
13140de09cc2dd Fabien Dessenne 2019-05-14  120  }
13140de09cc2dd Fabien Dessenne 2019-05-14  121  
13140de09cc2dd Fabien Dessenne 2019-05-14  122  static int stm32_rproc_mem_release(struct rproc *rproc,
13140de09cc2dd Fabien Dessenne 2019-05-14  123  				   struct rproc_mem_entry *mem)
13140de09cc2dd Fabien Dessenne 2019-05-14  124  {
13140de09cc2dd Fabien Dessenne 2019-05-14  125  	dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
13140de09cc2dd Fabien Dessenne 2019-05-14 @126  	iounmap(mem->va);
13140de09cc2dd Fabien Dessenne 2019-05-14  127  
13140de09cc2dd Fabien Dessenne 2019-05-14  128  	return 0;
13140de09cc2dd Fabien Dessenne 2019-05-14  129  }
13140de09cc2dd Fabien Dessenne 2019-05-14  130  

:::::: The code at line 109 was first introduced by commit
:::::: 13140de09cc2dd5e5166ad42292bb82af4e23cef remoteproc: stm32: add an ST stm32_rproc driver

:::::: TO: Fabien Dessenne <fabien.dessenne@...com>
:::::: CC: Bjorn Andersson <bjorn.andersson@...aro.org>

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

Download attachment ".config.gz" of type "application/gzip" (28484 bytes)