[anolis-intel-cloud:devel-6.6 21/21] drivers/gpu/drm/yhgch/yhgch-drm/yhgch_drm_drv.c:20:13: warning: no previous prototype for 'yhgch_drm_interrupt'

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

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-6.6
head:   0e71e11c7c57c6a824d6a2a6d48ef99568a94b3b
commit: 5beb05c06d06e80489ab0fb616cfbc42b94e19e6 [21/21] anolis: drm/yhgch/yhgch-drm: rename inspur-drm to yhgch-drm
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20250318/202503181104.PG4g7AR6-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250318/202503181104.PG4g7AR6-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/202503181104.PG4g7AR6-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/yhgch/yhgch-drm/yhgch_drm_drv.c:20:13: warning: no previous prototype for 'yhgch_drm_interrupt' [-Wmissing-prototypes]
      20 | irqreturn_t yhgch_drm_interrupt(int irq, void *arg)
         |             ^~~~~~~~~~~~~~~~~~~


vim +/yhgch_drm_interrupt +20 drivers/gpu/drm/yhgch/yhgch-drm/yhgch_drm_drv.c

    18	
    19	DEFINE_DRM_GEM_FOPS(yhgch_fops);
  > 20	irqreturn_t yhgch_drm_interrupt(int irq, void *arg)
    21	{
    22		struct drm_device *dev = (struct drm_device *)arg;
    23		struct yhgch_drm_private *priv =
    24		    (struct yhgch_drm_private *)dev->dev_private;
    25		u32 status;
    26	
    27		status = readl(priv->mmio + INSPUR_RAW_INTERRUPT);
    28	
    29		if (status & INSPUR_RAW_INTERRUPT_VBLANK(1)) {
    30			writel(INSPUR_RAW_INTERRUPT_VBLANK(1),
    31			       priv->mmio + INSPUR_RAW_INTERRUPT);
    32			drm_handle_vblank(dev, 0);
    33		}
    34	
    35		return IRQ_HANDLED;
    36	}
    37	

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