[asahilinux:bits/240-isp 88/94] drivers/media/platform/apple/avd/avd-drv.c:155:5: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations

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

Hi sofus,

FYI, the error/warning still remains.

tree:   https://github.com/AsahiLinux/linux bits/240-isp
head:   2e6ef8294919b4bd7b23756d836b447b0b4ffb5f
commit: 0765a0974a15233ed105e144fec796291dacb32d [88/94] media: apple: avd: add a dedicated "submit" step
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20261031/202610310246.uoJRTKaf-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261031/202610310246.uoJRTKaf-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/202610310246.uoJRTKaf-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/media/platform/apple/avd/avd-drv.c:155:5: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     155 |                                 AVD_OP_EXEC_REV3_VP9_MASK :
         |                                 ^
   drivers/media/platform/apple/avd/avd-inst.h:16:35: note: expanded from macro 'AVD_OP_EXEC_REV3_VP9_MASK'
      16 | #define AVD_OP_EXEC_REV3_VP9_MASK       FIELD_PREP(GENMASK(23, 12), 0xfff)
         |                                         ^
   1 error generated.


vim +/FIELD_PREP +155 drivers/media/platform/apple/avd/avd-drv.c

   145	
   146	int avd_submit_job(struct avd_ctx *ctx)
   147	{
   148		struct avd_dev *avd = ctx->dev;
   149		struct avd_job *sub = &ctx->job;
   150		struct avd_segment *seg;
   151		int i, idx = 0, vp = 0;
   152		void __iomem *reg;
   153		u32 exec_mask = sub->codec == AVD_CODEC_VP9 &&
   154						avd->variant->revision == 3 ?
 > 155					AVD_OP_EXEC_REV3_VP9_MASK :
   156					0;
   157		u32 exec_rev_flag =
   158			AVD_OP_EXEC_FLAG_START_REV4(avd->variant->revision == 4) |
   159			AVD_OP_EXEC_FLAG_START_REV3(avd->variant->revision == 3);
   160	
   161		ctx->fifo_idx = 0;
   162		for (i = 0; i < sub->codec; i++)
   163			vp += avd->variant->vp_slots[i];
   164	
   165		schedule_delayed_work(&ctx->watchdog_work, msecs_to_jiffies(2000));
   166		avd->variant->configure_stream(avd, ctx->inst.addr, ctx->fifo_idx, vp);
   167		reg = avd->ctrl + avd->variant->vp_slot_offset + vp * 4;
   168	
   169		/* the first segment is always the header (needs special handling) */
   170	
   171		writel(AVD_OP_EXEC | exec_mask | exec_rev_flag |
   172			       AVD_OP_EXEC_FIFO_IDX(ctx->fifo_idx),
   173		       reg);
   174		seg = &sub->segments[idx++];
   175		for (i = 0; i < seg->num; i++)
   176			writel(seg->instructions[i], reg);
   177		for (; idx <= sub->num; idx++) {
   178			seg = &sub->segments[idx];
   179			for (i = 0; i < seg->num; i++)
   180				writel(seg->instructions[i], reg);
   181			if (avd_wait_submission_queue(ctx, vp))
   182				break;
   183			writel(AVD_OP_EXEC | exec_mask |
   184				       AVD_OP_EXEC_FLAG_END(idx == sub->num),
   185			       reg);
   186		}
   187	
   188		kfree(sub->segments);
   189		sub->segments = NULL;
   190		return 0;
   191	}
   192	

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