[robh:imx93-ethos-v2 5/24] drivers/accel/ethos/ethos_gem.c:175:44: error: use of undeclared identifier 'srclen'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git imx93-ethos-v2
head:   e2533aabd58e39b5a86438a8884e75b665fd885c
commit: b4e21041a4d0a52c49e6bfd738499e9113ec725a [5/24] drm: ethos: Rework cmdstream DMA validation
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20250701/202507012232.PNa1KAOw-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507012232.PNa1KAOw-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507012232.PNa1KAOw-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/accel/ethos/ethos_gem.c:170:4: error: expected expression
     170 |                         u64 srclen = dma_length(info, st.dma.mode, st.dma.size0, st.dma.size1, &st.dma.src);
         |                         ^
>> drivers/accel/ethos/ethos_gem.c:175:44: error: use of undeclared identifier 'srclen'
     175 |                                  st.dma.src.region, st.dma.src.offset, srclen,
         |                                                                        ^
   2 errors generated.


vim +/srclen +175 drivers/accel/ethos/ethos_gem.c

   150	
   151	static int ethos_gem_cmdstream_validate(struct drm_device *ddev,
   152						struct ethos_gem_object *bo, u32 size)
   153	{
   154		struct ethos_validated_cmdstream_info *info;
   155		u32 *cmds = bo->base.vaddr;
   156		struct cmd_state st = {};
   157		int i;
   158	
   159		info = kzalloc(sizeof(*info), GFP_KERNEL);
   160		if (!info)
   161			return -ENOMEM;
   162		info->cmd_size = size;
   163	
   164		for (i = 0; i < size/4; i++, cmds++) {
   165			u16 cmd = *cmds;
   166			u16 param = *cmds >> 16;
   167	
   168			switch(cmd) {
   169			case 0x10: // NPU_OP_DMA_START
 > 170				u64 srclen = dma_length(info, st.dma.mode, st.dma.size0, st.dma.size1, &st.dma.src);
   171				u64 dstlen = dma_length(info, st.dma.mode, st.dma.size0, st.dma.size1, &st.dma.dst);
   172				if (st.dma.dst.region >= 0)
   173					info->output_region[st.dma.dst.region] = true;
   174				dev_info(ddev->dev, "cmdstream: DMA SRC:%d:%llx+%llx DST:%d:%llx+%llx\n",
 > 175					 st.dma.src.region, st.dma.src.offset, srclen,
   176					 st.dma.dst.region, st.dma.dst.offset, dstlen);
   177				break;
   178			case 0x130: // NPU_SET_DMA0_SRC_REGION
   179				if (param & 0x100)
   180					st.dma.src.region = -1;
   181				else
   182					st.dma.src.region = param & 0x7;
   183				st.dma.mode = (param >> 9) & 0x3;
   184				break;
   185			case 0x131: // NPU_SET_DMA0_DST_REGION
   186				if (param & 0x100)
   187					st.dma.dst.region = -1;
   188				else
   189					st.dma.dst.region = param & 0x7;
   190				break;
   191			case 0x132: // NPU_SET_DMA0_SIZE0
   192				st.dma.size0 = param;
   193				break;
   194			case 0x133: // NPU_SET_DMA0_SIZE1
   195				st.dma.size1 = param;
   196				break;
   197			case 0x4033: // NPU_SET_DMA0_SRC_STRIDE0
   198				st.dma.src.stride[0] = (s64)cmd_to_addr(cmds);
   199				break;
   200			case 0x4034: // NPU_SET_DMA0_SRC_STRIDE1
   201				st.dma.src.stride[1] = (s64)cmd_to_addr(cmds);
   202				break;
   203			case 0x4035: // NPU_SET_DMA0_DST_STRIDE0
   204				st.dma.dst.stride[0] = (s64)cmd_to_addr(cmds);
   205				break;
   206			case 0x4036: // NPU_SET_DMA0_DST_STRIDE1
   207				st.dma.dst.stride[1] = (s64)cmd_to_addr(cmds);
   208				break;
   209			case 0x4030: // NPU_SET_DMA0_SRC
   210				st.dma.src.offset = cmd_to_addr(cmds);
   211				break;
   212			case 0x4031: // NPU_SET_DMA0_DST
   213				st.dma.dst.offset = cmd_to_addr(cmds);
   214				break;
   215			case 0x4032: // NPU_SET_DMA0_LEN
   216				st.dma.src.len = st.dma.dst.len = cmd_to_addr(cmds);
   217				break;
   218			default:
   219				break;
   220			}
   221	
   222			if (cmd & 0x4000) {
   223				i++;
   224				cmds++;
   225			}
   226		}
   227	
   228		for (i = 0; i < NPU_BASEP_REGION_MAX; i++) {
   229			if (!info->region_size[i])
   230				continue;
   231			dev_info(ddev->dev, "region %d max size: %llx\n",
   232					i, info->region_size[i]);
   233		}
   234	
   235		bo->info = info;
   236		return 0;
   237	}
   238	

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