From linux-kernel-owner@vger.kernel.org Thu May 5 20:17:19 2011
Date: Thu, 05 May 2011 17:10:51 -0700
From: Greg KH <gregkh@suse.de>
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,
Dave Airlie <airlied@redhat.com>
Subject: [patch 19/38] drm/radeon: fix regression on atom cards with hardcoded EDID record.
In-Reply-To: <20110506001225.GA10547@kroah.com>
X-Mailing-List: linux-kernel@vger.kernel.org
2.6.38-stable review patch. If anyone has any objections, please let us know.
------------------
From: Dave Airlie <airlied@redhat.com>
commit eaa4f5e1d0b816291a59a47917e569c0384f2b6f upstream.
Since fafcf94e2b5732d1e13b440291c53115d2b172e9 introduced an edid size, it seems to have broken this path.
This manifest as oops on T500 Lenovo laptops with dual graphics primarily.
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=33812
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/gpu/drm/radeon/radeon_atombios.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1599,9 +1599,10 @@ struct radeon_encoder_atom_dig *radeon_a
memcpy((u8 *)edid, (u8 *)&fake_edid_record->ucFakeEDIDString[0],
fake_edid_record->ucFakeEDIDLength);
- if (drm_edid_is_valid(edid))
+ if (drm_edid_is_valid(edid)) {
rdev->mode_info.bios_hardcoded_edid = edid;
- else
+ rdev->mode_info.bios_hardcoded_edid_size = edid_size;
+ } else
kfree(edid);
}
}
--
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