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drm/radeon: handle non-VGA class pci devices with ATRM 

Newer PX systems have non-VGA pci class dGPUs.  Update
the ATRM fetch method to handle those cases.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=75401

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2014-05-08 20:04:03 -04:00 committed by Christian König
parent 89d2618dbd
commit d8ade3526b
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/radeon/radeon_bios.c
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@ -196,6 +196,20 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
}
}
if (!found) {
while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
dhandle = ACPI_HANDLE(&pdev->dev);
if (!dhandle)
continue;
status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
if (!ACPI_FAILURE(status)) {
found = true;
break;
}
}
}
if (!found)
return false;