From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756135AbbDGNYH (ORCPT ); Tue, 7 Apr 2015 09:24:07 -0400 Received: from ip4-83-240-67-251.cust.nbox.cz ([83.240.67.251]:54426 "EHLO ip4-83-240-18-248.cust.nbox.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754069AbbDGMwG (ORCPT ); Tue, 7 Apr 2015 08:52:06 -0400 From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Alex Deucher , Jiri Slaby Subject: [PATCH 3.12 029/155] drm/radeon: do a posting read in cik_set_irq Date: Tue, 7 Apr 2015 14:49:58 +0200 Message-Id: <54d6bc50a48287968893c3d9943e2ac1e1933d06.1428411004.git.jslaby@suse.cz> X-Mailer: git-send-email 2.3.4 In-Reply-To: <9a548862b8a26cbccc14f2c6c9c3688813d8d14b.1428411003.git.jslaby@suse.cz> References: <9a548862b8a26cbccc14f2c6c9c3688813d8d14b.1428411003.git.jslaby@suse.cz> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alex Deucher 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit cffefd9bb31cd35ab745d3b49005d10616d25bdc 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: Jiri Slaby --- drivers/gpu/drm/radeon/cik.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 6e2e4a859047..bb4c6573a525 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -6352,6 +6352,9 @@ int cik_irq_set(struct radeon_device *rdev) WREG32(DC_HPD5_INT_CONTROL, hpd5); WREG32(DC_HPD6_INT_CONTROL, hpd6); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } -- 2.3.4