Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753979AbbEEBml (ORCPT ); Mon, 4 May 2015 21:42:41 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:50810 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752463AbbEEBWk (ORCPT ); Mon, 4 May 2015 21:22:40 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Alex Deucher" Date: Tue, 05 May 2015 02:16:39 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.2 081/221] drm/radeon: do a posting read in evergreen_set_irq In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.249 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1031 Lines: 37 3.2.69-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher commit c320bb5f6dc0cb88a811cbaf839303e0a3916a92 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: Ben Hutchings --- drivers/gpu/drm/radeon/evergreen.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2631,6 +2631,9 @@ int evergreen_irq_set(struct radeon_devi WREG32(DC_HPD5_INT_CONTROL, hpd5); WREG32(DC_HPD6_INT_CONTROL, hpd6); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/