[linux-next:master 1681/2336] drivers/spi/spi-cadence-quadspi.c:966:59: sparse: sparse: incompatible types in comparison expression (different type sizes):

[linux-next:master 1681/2336] drivers/spi/spi-cadence-quadspi.c:966:59: sparse: sparse: incompatible types in comparison expression (different type sizes):

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   1c925d2030afd354a02c23500386e620e662622b
commit: 0920a32cf6f20467aa133a47b776ee782daa889f [1681/2336] spi: cadence-quadspi: Wait at least 500 ms for direct reads
config: arm-randconfig-s032-20210108 (attached as .config)
compiler: arm-linux-gnueabi-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: v0.6.3-208-g46a52ca4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=0920a32cf6f20467aa133a47b776ee782daa889f
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 0920a32cf6f20467aa133a47b776ee782daa889f
        # 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=arm 

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


"sparse warnings: (new ones prefixed by >>)"
>> drivers/spi/spi-cadence-quadspi.c:966:59: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> drivers/spi/spi-cadence-quadspi.c:966:59: sparse:    unsigned int *
>> drivers/spi/spi-cadence-quadspi.c:966:59: sparse:    unsigned long *

vim +966 drivers/spi/spi-cadence-quadspi.c

   919	
   920	static int cqspi_direct_read_execute(struct cqspi_flash_pdata *f_pdata,
   921					     u_char *buf, loff_t from, size_t len)
   922	{
   923		struct cqspi_st *cqspi = f_pdata->cqspi;
   924		struct device *dev = &cqspi->pdev->dev;
   925		enum dma_ctrl_flags flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT;
   926		dma_addr_t dma_src = (dma_addr_t)cqspi->mmap_phys_base + from;
   927		int ret = 0;
   928		struct dma_async_tx_descriptor *tx;
   929		dma_cookie_t cookie;
   930		dma_addr_t dma_dst;
   931		struct device *ddev;
   932	
   933		if (!cqspi->rx_chan || !virt_addr_valid(buf)) {
   934			memcpy_fromio(buf, cqspi->ahb_base + from, len);
   935			return 0;
   936		}
   937	
   938		ddev = cqspi->rx_chan->device->dev;
   939		dma_dst = dma_map_single(ddev, buf, len, DMA_FROM_DEVICE);
   940		if (dma_mapping_error(ddev, dma_dst)) {
   941			dev_err(dev, "dma mapping failed\n");
   942			return -ENOMEM;
   943		}
   944		tx = dmaengine_prep_dma_memcpy(cqspi->rx_chan, dma_dst, dma_src,
   945					       len, flags);
   946		if (!tx) {
   947			dev_err(dev, "device_prep_dma_memcpy error\n");
   948			ret = -EIO;
   949			goto err_unmap;
   950		}
   951	
   952		tx->callback = cqspi_rx_dma_callback;
   953		tx->callback_param = cqspi;
   954		cookie = tx->tx_submit(tx);
   955		reinit_completion(&cqspi->rx_dma_complete);
   956	
   957		ret = dma_submit_error(cookie);
   958		if (ret) {
   959			dev_err(dev, "dma_submit_error %d\n", cookie);
   960			ret = -EIO;
   961			goto err_unmap;
   962		}
   963	
   964		dma_async_issue_pending(cqspi->rx_chan);
   965		if (!wait_for_completion_timeout(&cqspi->rx_dma_complete,
 > 966						 msecs_to_jiffies(max(len, 500UL)))) {
   967			dmaengine_terminate_sync(cqspi->rx_chan);
   968			dev_err(dev, "DMA wait_for_completion_timeout\n");
   969			ret = -ETIMEDOUT;
   970			goto err_unmap;
   971		}
   972	
   973	err_unmap:
   974		dma_unmap_single(ddev, dma_dst, len, DMA_FROM_DEVICE);
   975	
   976		return ret;
   977	}
   978	

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

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