Ksawlii/kernel_samsung_a53x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

drm/amdgpu: don't use ATRM for external devices

Browse source 
[ Upstream commit 432e664e7c98c243fab4c3c95bd463bea3aeed28 ]

The ATRM ACPI method is for fetching the dGPU vbios rom
image on laptops and all-in-one systems.  It should not be
used for external add in cards.  If the dGPU is thunderbolt
connected, don't try ATRM.

v2: pci_is_thunderbolt_attached only works for Intel.  Use
    pdev->external_facing instead.
v3: dev_is_removable() seems to be what we want

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2925
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alex Deucher 2023-10-17 15:40:01 -04:00 • committed by Ksawlii
parent 3a0ed2d406
commit ba458f13eb
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
View file

@ -29,6 +29,7 @@
#include "amdgpu.h"
#include "atom.h"
#include <linux/device.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/acpi.h>
@ -285,6 +286,10 @@ static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev)
if (adev->flags & AMD_IS_APU)
return false;
/* ATRM is for on-platform devices only */
if (dev_is_removable(&adev->pdev->dev))
return false;
while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
dhandle = ACPI_HANDLE(&pdev->dev);
if (!dhandle)