From: Leo Liu <leo.liu@amd.com>
Date: Wed, 1 Nov 2017 01:03:39 +0000 (-0400)
Subject: drm/amdgpu: return -ENOENT from uvd 6.0 early init for harvesting
X-Git-Tag: v4.9.61~57
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09907f0cbe61f65d9dba6ad1a3bbb9f5ca31c2c9;p=linux

drm/amdgpu: return -ENOENT from uvd 6.0 early init for harvesting

commit cb4b02d7cac56a69d8137d8d843507cca9182aed upstream.

Fixes init failures on polaris cards with harvested UVD.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
index ab3df6d75656..3f445df9124d 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -89,6 +89,10 @@ static int uvd_v6_0_early_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (!(adev->flags & AMD_IS_APU) &&
+	    (RREG32_SMC(ixCC_HARVEST_FUSES) & CC_HARVEST_FUSES__UVD_DISABLE_MASK))
+		return -ENOENT;
+
 	uvd_v6_0_set_ring_funcs(adev);
 	uvd_v6_0_set_irq_funcs(adev);