linux-kernel - drivers/spi/spi-nxp-fspi.c:672:34: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Date:   Wed, 27 May 2020 18:18:12 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Han Xu <han.xu@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>, Adam Ford <aford173@...il.com>
Subject: drivers/spi/spi-nxp-fspi.c:672:34: sparse: sparse: incorrect type in
 argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   444fc5cde64330661bf59944c43844e7d4c2ccd8
commit: d166a73503ef74fb761f1a3103ef7919928d7b52 spi: fspi: dynamically alloc AHB memory
date:   3 months ago
config: openrisc-randconfig-s031-20200527 (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-240-gf0fe1cd9-dirty
        git checkout d166a73503ef74fb761f1a3103ef7919928d7b52
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=openrisc CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

   drivers/spi/spi-nxp-fspi.c:472:25: sparse: sparse: cast from restricted __be32
>> drivers/spi/spi-nxp-fspi.c:672:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *addr @@     got void [noderef] <asn:2> *ahb_addr @@
   drivers/spi/spi-nxp-fspi.c:672:34: sparse:     expected void *addr
   drivers/spi/spi-nxp-fspi.c:672:34: sparse:     got void [noderef] <asn:2> *ahb_addr
   drivers/spi/spi-nxp-fspi.c:1102:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *addr @@     got void [noderef] <asn:2> *ahb_addr @@
   drivers/spi/spi-nxp-fspi.c:1102:26: sparse:     expected void *addr
   drivers/spi/spi-nxp-fspi.c:1102:26: sparse:     got void [noderef] <asn:2> *ahb_addr
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32

vim +672 drivers/spi/spi-nxp-fspi.c

   662	
   663	static int nxp_fspi_read_ahb(struct nxp_fspi *f, const struct spi_mem_op *op)
   664	{
   665		u32 start = op->addr.val;
   666		u32 len = op->data.nbytes;
   667	
   668		/* if necessary, ioremap before AHB read */
   669		if ((!f->ahb_addr) || start < f->memmap_start ||
   670		     start + len > f->memmap_start + f->memmap_len) {
   671			if (f->ahb_addr)
 > 672				iounmap(f->ahb_addr);
   673	
   674			f->memmap_start = start;
   675			f->memmap_len = len > NXP_FSPI_MIN_IOMAP ?
   676					len : NXP_FSPI_MIN_IOMAP;
   677	
   678			f->ahb_addr = ioremap_wc(f->memmap_phy + f->memmap_start,
   679						 f->memmap_len);
   680	
   681			if (!f->ahb_addr) {
   682				dev_err(f->dev, "failed to alloc memory\n");
   683				return -ENOMEM;
   684			}
   685		}
   686	
   687		/* Read out the data directly from the AHB buffer. */
   688		memcpy_fromio(op->data.buf.in,
   689			      f->ahb_addr + start - f->memmap_start, len);
   690	
   691		return 0;
   692	}
   693	

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

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