linux-kernel - [asahilinux:nvme/wip-clocks 14/17] drivers/nvme/host/apple-ans.c:289:19: sparse: sparse: incorrect type in assignment (different base types)

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Date:   Tue, 24 Aug 2021 18:09:34 +0800
From:   kernel test robot <lkp@...el.com>
To:     Sven Peter <sven@...npeter.dev>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Hector Martin <marcan@...can.st>
Subject: [asahilinux:nvme/wip-clocks 14/17]
 drivers/nvme/host/apple-ans.c:289:19: sparse: sparse: incorrect type in
 assignment (different base types)

tree:   https://github.com/AsahiLinux/linux nvme/wip-clocks
head:   49b910337a28db951dd1a5259a3837f6d500031b
commit: 23eada9bb9af9edbdc8a212e1d8b7a7a0e7a0e9c [14/17] NVMe WIP
config: arm64-randconfig-s031-20210824 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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: v0.6.3-348-gf0e6938b-dirty
        # https://github.com/AsahiLinux/linux/commit/23eada9bb9af9edbdc8a212e1d8b7a7a0e7a0e9c
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux nvme/wip-clocks
        git checkout 23eada9bb9af9edbdc8a212e1d8b7a7a0e7a0e9c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 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/nvme/host/apple-ans.c:289:19: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long long [usertype] prp1 @@     got restricted __le64 [usertype] prp1 @@
   drivers/nvme/host/apple-ans.c:289:19: sparse:     expected unsigned long long [usertype] prp1
   drivers/nvme/host/apple-ans.c:289:19: sparse:     got restricted __le64 [usertype] prp1
>> drivers/nvme/host/apple-ans.c:290:19: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long long [usertype] prp2 @@     got restricted __le64 [usertype] prp2 @@
   drivers/nvme/host/apple-ans.c:290:19: sparse:     expected unsigned long long [usertype] prp2
   drivers/nvme/host/apple-ans.c:290:19: sparse:     got restricted __le64 [usertype] prp2
>> drivers/nvme/host/apple-ans.c:291:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] length @@     got restricted __le16 [usertype] length @@
   drivers/nvme/host/apple-ans.c:291:21: sparse:     expected unsigned int [usertype] length
   drivers/nvme/host/apple-ans.c:291:21: sparse:     got restricted __le16 [usertype] length

vim +289 drivers/nvme/host/apple-ans.c

   274	
   275	/**
   276	 * apple_nvme_submit_cmd() - Copy a command into a queue and ring the doorbell
   277	 * @nvmeq: The queue to use
   278	 * @cmd: The command to send
   279	 */
   280	static void apple_nvme_submit_cmd(struct apple_nvme_queue *nvmeq, struct nvme_command *cmd)
   281	{
   282		u32 tag = cmd->common.command_id;
   283		struct apple_nvmmu_tcb *tcb;
   284	
   285		tcb = nvmeq->ans2_tcb_ptr + tag * sizeof(struct apple_nvmmu_tcb);
   286		memset(tcb, 0, sizeof(*tcb));
   287	
   288		tcb->opcode = cmd->common.opcode;
 > 289		tcb->prp1 = cmd->common.dptr.prp1;
 > 290		tcb->prp2 = cmd->common.dptr.prp2;
 > 291		tcb->length = cmd->rw.length;
   292		tcb->command_id = tag;
   293	
   294		if (nvme_is_write(cmd))
   295			tcb->dma_flags = APPLE_ANS2_TCB_DMA_TO_DEVICE;
   296		else
   297			tcb->dma_flags = APPLE_ANS2_TCB_DMA_FROM_DEVICE;
   298	
   299		memcpy(nvmeq->sq_cmds + (tag << nvmeq->sqes), cmd, sizeof(*cmd));
   300		writel(tag, nvmeq->ans2_q_db);
   301	}
   302	

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

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