Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alex Deucher Subject: [PATCH 3.10 17/55] drm/radeon: do a posting read in evergreen_set_irq Date: Tue, 24 Mar 2015 16:42:57 +0100 Message-Id: <20150324154159.475742506@linuxfoundation.org> In-Reply-To: <20150324154158.748418668@linuxfoundation.org> References: <20150324154158.748418668@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.10-stable 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: Greg Kroah-Hartman --- 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 @@ -4016,6 +4016,9 @@ int evergreen_irq_set(struct radeon_devi WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET, afmt5); WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET, afmt6); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; }