Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756778AbbFPIo6 (ORCPT ); Tue, 16 Jun 2015 04:44:58 -0400 Received: from mail.kernel.org ([198.145.29.136]:55374 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756367AbbFPIn5 (ORCPT ); Tue, 16 Jun 2015 04:43:57 -0400 From: lizf@kernel.org To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Alex Deucher , Zefan Li Subject: [PATCH 3.4 068/172] drm/radeon: do a posting read in si_set_irq Date: Tue, 16 Jun 2015 16:35:22 +0800 Message-Id: <1434443826-4929-68-git-send-email-lizf@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1434443587-4599-1-git-send-email-lizf@kernel.org> References: <1434443587-4599-1-git-send-email-lizf@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1065 Lines: 42 From: Alex Deucher 3.4.108-rc1 review patch. If anyone has any objections, please let me know. ------------------ commit 0586915ec10d0ae60de5cd3381ad25a704760402 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: Zefan Li --- drivers/gpu/drm/radeon/si.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index e710073..068b21f 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -4126,6 +4126,9 @@ int si_init(struct radeon_device *rdev) return -EINVAL; } + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } -- 1.9.1 -- 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/