From: Simon Ser <contact@emersion.fr>
Date: Wed, 11 Dec 2019 10:21:01 +0000 (+0000)
Subject: drm/amdgpu: log when amdgpu.dc=1 but ASIC is unsupported
X-Git-Tag: v5.6-rc1~114^2~21^2~1
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=93b09a9a892ba07bd99132d9bb6318e31c7f2f79;p=linux.git

drm/amdgpu: log when amdgpu.dc=1 but ASIC is unsupported

This makes it easier to figure out whether the kernel parameter has been
taken into account.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 95988ff7356d..a97946878024 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2636,6 +2636,9 @@ bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
 		return amdgpu_dc != 0;
 #endif
 	default:
+		if (amdgpu_dc > 0)
+			DRM_INFO("Display Core has been requested via kernel parameter "
+					 "but isn't supported by ASIC, ignoring\n");
 		return false;
 	}
 }