From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756553AbbCXRiw (ORCPT ); Tue, 24 Mar 2015 13:38:52 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:33416 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932972AbbCXRDm (ORCPT ); Tue, 24 Mar 2015 13:03:42 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alex Deucher Subject: [PATCH 3.19 028/123] drm/radeon: do a posting read in r600_set_irq Date: Tue, 24 Mar 2015 16:45:37 +0100 Message-Id: <20150324154425.355459183@linuxfoundation.org> X-Mailer: git-send-email 2.3.3 In-Reply-To: <20150324154423.655554012@linuxfoundation.org> References: <20150324154423.655554012@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher commit 9d1393f23d5656cdd5f368efd60694d4aeed81d3 upstream. To make sure the writes go through the pci bridge. bug: https://bugzilla.kernel.org/show_bug.cgi?id=90741 Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/r600.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3783,6 +3783,9 @@ int r600_irq_set(struct radeon_device *r WREG32(RV770_CG_THERMAL_INT, thermal_int); } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; }