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 20/55] drm/radeon: do a posting read in si_set_irq Date: Tue, 24 Mar 2015 16:43:00 +0100 Message-Id: <20150324154159.601213034@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 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: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/si.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -5778,5 +5778,8 @@ int si_set_uvd_clocks(struct radeon_devi mdelay(100); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; }