linux-kernel - drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:183:18: sparse: sparse: incorrect type in assignment (different base types)

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Date:   Thu, 27 Aug 2020 08:12:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peng Ma <peng.ma@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Vinod Koul <vkoul@...nel.org>
Subject: drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:183:18: sparse: sparse:
 incorrect type in assignment (different base types)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   15bc20c6af4ceee97a1f90b43c0e386643c071b4
commit: 7fdf9b05c73b79c4d9a85b5a9905efa10ee482a6 dmaengine: fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs
date:   11 months ago
config: arm64-randconfig-s031-20200826 (attached as .config)
compiler: aarch64-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: v0.6.2-191-g10164920-dirty
        git checkout 7fdf9b05c73b79c4d9a85b5a9905efa10ee482a6
        # 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=arm64 

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/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:183:18: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] cmd @@     got restricted __le32 [usertype] @@
>> drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:183:18: sparse:     expected unsigned int [usertype] cmd
>> drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:183:18: sparse:     got restricted __le32 [usertype]
   drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:188:26: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] cmd @@     got restricted __le32 [usertype] @@
   drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:188:26: sparse:     expected unsigned int [usertype] cmd
   drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:188:26: sparse:     got restricted __le32 [usertype]
   drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:190:26: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] cmd @@     got restricted __le32 [usertype] @@
   drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:190:26: sparse:     expected unsigned int [usertype] cmd
   drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:190:26: sparse:     got restricted __le32 [usertype]
--
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:81:24: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le64 [usertype] @@     got restricted __le32 [usertype] @@
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:81:24: sparse:     expected restricted __le64 [usertype]
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:81:24: sparse:     got restricted __le32 [usertype]
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:9: sparse: sparse: invalid assignment: |=
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:9: sparse:    left side has type restricted __le64
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:9: sparse:    right side has type unsigned long long
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:9: sparse: sparse: invalid assignment: |=
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:9: sparse:    left side has type restricted __le64
>> drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:9: sparse:    right side has type unsigned long long

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fdf9b05c73b79c4d9a85b5a9905efa10ee482a6
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 7fdf9b05c73b79c4d9a85b5a9905efa10ee482a6
vim +183 drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c

   170	
   171	/* first frame list for descriptor buffer */
   172	static void
   173	dpaa2_qdma_populate_first_framel(struct dpaa2_fl_entry *f_list,
   174					 struct dpaa2_qdma_comp *dpaa2_comp,
   175					 bool wrt_changed)
   176	{
   177		struct dpaa2_qdma_sd_d *sdd;
   178	
   179		sdd = dpaa2_comp->desc_virt_addr;
   180		memset(sdd, 0, 2 * (sizeof(*sdd)));
   181	
   182		/* source descriptor CMD */
 > 183		sdd->cmd = cpu_to_le32(QDMA_SD_CMD_RDTTYPE_COHERENT);
   184		sdd++;
   185	
   186		/* dest descriptor CMD */
   187		if (wrt_changed)
   188			sdd->cmd = cpu_to_le32(LX2160_QDMA_DD_CMD_WRTTYPE_COHERENT);
   189		else
   190			sdd->cmd = cpu_to_le32(QDMA_DD_CMD_WRTTYPE_COHERENT);
   191	
   192		memset(f_list, 0, sizeof(struct dpaa2_fl_entry));
   193	
   194		/* first frame list to source descriptor */
   195		dpaa2_fl_set_addr(f_list, dpaa2_comp->desc_bus_addr);
   196		dpaa2_fl_set_len(f_list, 0x20);
   197		dpaa2_fl_set_format(f_list, QDMA_FL_FMT_SBF | QDMA_FL_SL_LONG);
   198	
   199		/* bypass memory translation */
   200		if (smmu_disable)
   201			f_list->bpid = cpu_to_le16(QDMA_FL_BMT_ENABLE);
   202	}
   203	

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

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