From: Alex Deucher <alexdeucher@xxxxxxxxx> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit d8ade3526b2aa0505132c404c05a38b73ea15490 upstream. 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@xxxxxxx> Signed-off-by: Christian König <christian.koenig@xxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- drivers/gpu/drm/radeon/radeon_bios.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c index 061b227dae0c..b131520521e4 100644 --- a/drivers/gpu/drm/radeon/radeon_bios.c +++ b/drivers/gpu/drm/radeon/radeon_bios.c @@ -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; -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html