[drm-misc:drm-misc-next 3/5] drivers/gpu/drm/verisilicon/vs_bridge.c:325:9-16: WARNING: ERR_CAST can be used with bridge

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

tree:   https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next
head:   61c0f69a2ff79c8f388a9e973abb4853be467127
commit: dbf21777caa8b8c88c12f7f036b01208fec0d55a [3/5] drm: verisilicon: add a driver for Verisilicon display controllers
config: riscv-randconfig-r052-20260224 (https://download.01.org/0day-ci/archive/20260224/202602242000.bQ0qN6AC-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 9a109fbb6e184ec9bcce10615949f598f4c974a9)

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/202602242000.bQ0qN6AC-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/verisilicon/vs_bridge.c:325:9-16: WARNING: ERR_CAST can be used with bridge
--
>> drivers/gpu/drm/verisilicon/vs_crtc.c:175:9-16: WARNING: ERR_CAST can be used with primary
--
>> drivers/gpu/drm/verisilicon/vs_dc.c:109:2-9: line 109 is redundant because platform_get_irq() already prints an error

vim +325 drivers/gpu/drm/verisilicon/vs_bridge.c

   288	
   289	struct vs_bridge *vs_bridge_init(struct drm_device *drm_dev,
   290					 struct vs_crtc *crtc)
   291	{
   292		unsigned int output = crtc->id;
   293		struct vs_bridge *bridge;
   294		struct drm_bridge *next;
   295		enum vs_bridge_output_interface intf;
   296		const struct drm_bridge_funcs *bridge_funcs;
   297		int ret, enctype;
   298	
   299		intf = vs_bridge_detect_output_interface(drm_dev->dev->of_node,
   300							 output);
   301		if (intf == -ENODEV) {
   302			drm_dbg(drm_dev, "Skipping output %u\n", output);
   303			return NULL;
   304		}
   305	
   306		next = devm_drm_of_get_bridge(drm_dev->dev, drm_dev->dev->of_node,
   307					      output, intf);
   308		if (IS_ERR(next)) {
   309			ret = PTR_ERR(next);
   310			if (ret != -EPROBE_DEFER)
   311				drm_err(drm_dev,
   312					"Cannot get downstream bridge of output %u\n",
   313					output);
   314			return ERR_PTR(ret);
   315		}
   316	
   317		if (intf == VSDC_OUTPUT_INTERFACE_DPI)
   318			bridge_funcs = &vs_dpi_bridge_funcs;
   319		else
   320			bridge_funcs = &vs_dp_bridge_funcs;
   321	
   322		bridge = devm_drm_bridge_alloc(drm_dev->dev, struct vs_bridge, base,
   323					       bridge_funcs);
   324		if (IS_ERR(bridge))
 > 325			return ERR_PTR(PTR_ERR(bridge));

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