[openeuler:OLK-5.10 19206/30000] drivers/gpu/drm/inspur/inspur_drm_drv.c:30:13: warning: no previous prototype for 'inspur_drm_interrupt'

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

Hi Hongchen,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git OLK-5.10
head:   5a1d9701155c6908c76c68951170f10279685143
commit: b9d65551a3adfa87a7c5d33391187ee60a1b501d [19206/30000] drm: add inspur drm driver support
config: arm64-randconfig-002-20240914 (https://download.01.org/0day-ci/archive/20240914/202409140804.IiV0APec-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240914/202409140804.IiV0APec-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/202409140804.IiV0APec-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/inspur/inspur_drm_drv.c:30:13: warning: no previous prototype for 'inspur_drm_interrupt' [-Wmissing-prototypes]
      30 | irqreturn_t inspur_drm_interrupt(int irq, void *arg)
         |             ^~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/inspur/inspur_drm_drv.c: In function 'inspur_pci_probe':
   drivers/gpu/drm/inspur/inspur_drm_drv.c:379:36: warning: unused variable 'priv' [-Wunused-variable]
     379 |         struct inspur_drm_private *priv;
         |                                    ^~~~


vim +/inspur_drm_interrupt +30 drivers/gpu/drm/inspur/inspur_drm_drv.c

    27	
    28	
    29	DEFINE_DRM_GEM_FOPS(inspur_fops);
  > 30	irqreturn_t inspur_drm_interrupt(int irq, void *arg)
    31	{
    32		struct drm_device *dev = (struct drm_device *)arg;
    33		struct inspur_drm_private *priv =
    34			(struct inspur_drm_private *)dev->dev_private;
    35		u32 status;
    36	
    37		status = readl(priv->mmio + INSPUR_RAW_INTERRUPT);
    38	
    39		if (status & INSPUR_RAW_INTERRUPT_VBLANK(1)) {
    40			writel(INSPUR_RAW_INTERRUPT_VBLANK(1),
    41			       priv->mmio + INSPUR_RAW_INTERRUPT);
    42			drm_handle_vblank(dev, 0);
    43		}
    44	
    45		return IRQ_HANDLED;
    46	}
    47	

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https://github.com/intel/lkp-tests/wiki