linux-kernel - [PATCH 5.10 009/152] drm/amdgpu: fix DRM_INFO flood if display core is not supported (bug 210921)

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Message-Id: <20210118113353.215516490@linuxfoundation.org>
Date:   Mon, 18 Jan 2021 12:33:04 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alexandre Demers <alexandre.f.demers@...il.com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 5.10 009/152] drm/amdgpu: fix DRM_INFO flood if display core is not supported (bug 210921)

From: Alexandre Demers <alexandre.f.demers@...il.com>

commit ff9346dbabbb6595c5c20d90d88ae4a2247487a9 upstream.

This fix bug 210921 where DRM_INFO floods log when hitting an unsupported ASIC in
amdgpu_device_asic_has_dc_support(). This info should be only called once.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=210921
Signed-off-by: Alexandre Demers <alexandre.f.demers@...il.com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3008,7 +3008,7 @@ bool amdgpu_device_asic_has_dc_support(e
 #endif
 	default:
 		if (amdgpu_dc > 0)
-			DRM_INFO("Display Core has been requested via kernel parameter "
+			DRM_INFO_ONCE("Display Core has been requested via kernel parameter "
 					 "but isn't supported by ASIC, ignoring\n");
 		return false;
 	}