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authorAlex Deucher <alexdeucher@gmail.com>2011-03-23 08:10:10 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2011-03-27 11:36:34 -0700
commit0b62527f8258ce04782469e4521b43d4dd5fc5f0 (patch)
treea2c66d38bf8baebcf6dc6273ee6c5aebbaf7226f /kernel
parent3b7a3e87e21e4d0a7d231bdab2b00af84a89106b (diff)
downloadlinux-linaro-android-0b62527f8258ce04782469e4521b43d4dd5fc5f0.tar.gz
drm/radeon/kms: fix hardcoded EDID handling
commit fafcf94e2b5732d1e13b440291c53115d2b172e9 upstream. On some servers there is a hardcoded EDID provided in the vbios so that the driver will always see a display connected even if something like a KVM prevents traditional means like DDC or load detection from working properly. Also most server boards with DVI are not actually DVI, but DVO connected to a virtual KVM service processor. If we fail to detect a monitor via DDC or load detection and a hardcoded EDID is available, use it. Additionally, when using the hardcoded EDID, use a copy of it rather than the actual one stored in the driver as the detect() and get_modes() functions may free it if DDC is successful. This fixes the virtual KVM on several internal servers. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
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