From mboxrd@z Thu Jan  1 00:00:00 1970
From: Monk Liu <Monk.Liu-5C7GfCeVMHo@public.gmane.org>
Subject: [PATCH 13/18] drm/amdgpu:fix driver unloading bug
Date: Mon, 18 Sep 2017 14:11:57 +0800
Message-ID: <1505715122-23904-14-git-send-email-Monk.Liu@amd.com>
References: <1505715122-23904-1-git-send-email-Monk.Liu@amd.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
In-Reply-To: <1505715122-23904-1-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
List-Id: Discussion list for AMD gfx <amd-gfx.lists.freedesktop.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/amd-gfx>
List-Post: <mailto:amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Help: <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=subscribe>
Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Sender: "amd-gfx" <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Cc: Horace Chen <horace.chen-5C7GfCeVMHo@public.gmane.org>, Monk Liu <Monk.Liu-5C7GfCeVMHo@public.gmane.org>
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