linux-kernel - Fix hardware accelerated video playback with amdgpu on 32Bit system

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Date:   Wed, 29 Mar 2017 11:18:38 +0200
From:   Jan Burgmeier <jan.burgmeier@...con-software.com>
To:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     airlied@...ux.ie
Subject: Fix hardware accelerated video playback with amdgpu on 32Bit system 

Hi,

on 32Bit systems hardware accelerated video playback with amdgpu always errors
out with the following message:
	"[drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* IB va_start+ib_bytes is invalid."

Attached you find a patch witch fixes the problem. The patch was made against the staging-next branch.

The used hardware is:
HP T630 Thin Client
CPU: AMD Embedded G-Series GX-420GI Radeon R7E
GPU: Advanced Micro Devices, Inc. [AMD/ATI] Carrizo (rev 88)

Regards,
Jan Burgmeier