linux-kernel - drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:288: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst

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Message-ID: <202111221241.jOw64KKb-lkp@intel.com>
Date:   Mon, 22 Nov 2021 12:14:45 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Yacoub <markyacoub@...omium.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Alex Deucher <alexander.deucher@....com>,
        Harry Wentland <harry.wentland@....com>,
        linux-doc@...r.kernel.org
Subject: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:288:
 warning: This comment starts with '/**', but isn't a kernel-doc comment.
 Refer Documentation/doc-guide/kernel-doc.rst

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   136057256686de39cc3a07c2e39ef6bc43003ff6
commit: 03fc4cf45d30533d54f0f4ebc02aacfa12f52ce2 drm/amd/display: Verify Gamma & Degamma LUT sizes in amdgpu_dm_atomic_check
date:   5 months ago
config: x86_64-randconfig-m001-20211109 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=03fc4cf45d30533d54f0f4ebc02aacfa12f52ce2
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 03fc4cf45d30533d54f0f4ebc02aacfa12f52ce2
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:288: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Verifies that the Degamma and Gamma LUTs attached to the |crtc_state| are of


vim +288 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c

   286	
   287	/**
 > 288	 * Verifies that the Degamma and Gamma LUTs attached to the |crtc_state| are of
   289	 * the expected size.
   290	 * Returns 0 on success.
   291	 */
   292	int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state)
   293	{
   294		const struct drm_color_lut *lut = NULL;
   295		uint32_t size = 0;
   296	
   297		lut = __extract_blob_lut(crtc_state->degamma_lut, &size);
   298		if (lut && size != MAX_COLOR_LUT_ENTRIES) {
   299			DRM_DEBUG_DRIVER(
   300				"Invalid Degamma LUT size. Should be %u but got %u.\n",
   301				MAX_COLOR_LUT_ENTRIES, size);
   302			return -EINVAL;
   303		}
   304	
   305		lut = __extract_blob_lut(crtc_state->gamma_lut, &size);
   306		if (lut && size != MAX_COLOR_LUT_ENTRIES &&
   307		    size != MAX_COLOR_LEGACY_LUT_ENTRIES) {
   308			DRM_DEBUG_DRIVER(
   309				"Invalid Gamma LUT size. Should be %u (or %u for legacy) but got %u.\n",
   310				MAX_COLOR_LUT_ENTRIES, MAX_COLOR_LEGACY_LUT_ENTRIES,
   311				size);
   312			return -EINVAL;
   313		}
   314	
   315		return 0;
   316	}
   317	

---
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https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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