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drm/radeon: fix XFX quirk

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Only override the ddc bus if the connector doesn't have
a valid one.  The existing code overrode the ddc bus for
all connectors even if it had ddc bus.

Fixes ddc on another XFX card with the same pci ids that
was broken by the quirk overwriting the correct ddc bus.

Reported-by: Mehdi Aqadjani Memar <m.aqadjanimemar@student.ru.nl>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2012-05-23 11:48:59 -04:00 committed by Dave Airlie
parent 592c20ee45
commit 1ebf169ad4
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -444,7 +444,9 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
*/
if ((dev->pdev->device == 0x9498) &&
(dev->pdev->subsystem_vendor == 0x1682) &&
(dev->pdev->subsystem_device == 0x2452)) {
(dev->pdev->subsystem_device == 0x2452) &&
(i2c_bus->valid == false) &&
!(supported_device & (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT))) {
struct radeon_device *rdev = dev->dev_private;
*i2c_bus = radeon_lookup_i2c_gpio(rdev, 0x93);
}