Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758553Ab1BPCAr (ORCPT ); Tue, 15 Feb 2011 21:00:47 -0500 Received: from kroah.org ([198.145.64.141]:49178 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752579Ab1BPBvL (ORCPT ); Tue, 15 Feb 2011 20:51:11 -0500 X-Mailbox-Line: From gregkh@clark.kroah.org Tue Feb 15 17:47:02 2011 Message-Id: <20110216014702.358548085@clark.kroah.org> User-Agent: quilt/0.48-11.2 Date: Tue, 15 Feb 2011 17:45:47 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Alex Deucher , Dave Airlie Subject: [081/115] drm/radeon/kms: fix s/r issues with bios scratch regs In-Reply-To: <20110216014741.GA24678@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1832 Lines: 57 2.6.32-longterm review patch. If anyone has any objections, please let us know. ------------------ From: Alex Deucher commit 87364760de5d631390c478fcbac8db1b926e0adf upstream. The accelerate mode bit gets checked by certain atom command tables to set up some register state. It needs to be clear when setting modes and set when not. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=26942 Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/radeon_atombios.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1217,7 +1217,7 @@ void radeon_atom_initialize_bios_scratch bios_2_scratch &= ~ATOM_S2_VRI_BRIGHT_ENABLE; /* tell the bios not to handle mode switching */ - bios_6_scratch |= (ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH | ATOM_S6_ACC_MODE); + bios_6_scratch |= ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH; if (rdev->family >= CHIP_R600) { WREG32(R600_BIOS_2_SCRATCH, bios_2_scratch); @@ -1268,10 +1268,13 @@ void radeon_atom_output_lock(struct drm_ else bios_6_scratch = RREG32(RADEON_BIOS_6_SCRATCH); - if (lock) + if (lock) { bios_6_scratch |= ATOM_S6_CRITICAL_STATE; - else + bios_6_scratch &= ~ATOM_S6_ACC_MODE; + } else { bios_6_scratch &= ~ATOM_S6_CRITICAL_STATE; + bios_6_scratch |= ATOM_S6_ACC_MODE; + } if (rdev->family >= CHIP_R600) WREG32(R600_BIOS_6_SCRATCH, bios_6_scratch); -- 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/