averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-07-14 21:43:02 +02:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: disable BAR resize on Dell G5 SE

Browse Source 
[ Upstream commit 099bffc7ca ]

There was a quirk added to add a workaround for a Sapphire
RX 5600 XT Pulse that didn't allow BAR resizing.  However,
the quirk caused a regression with runtime pm on Dell laptops
using those chips, rather than narrowing the scope of the
resizing quirk, add a quirk to prevent amdgpu from resizing
the BAR on those Dell platforms unless runtime pm is disabled.

v2: update commit message, add runpm check

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/1707
Fixes: 907830b0fc ("PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse")
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 5235053f44)
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alex Deucher
2025-03-13 12:58:20 +01:00
committed by Greg Kroah-Hartman
parent c18438959b
commit 2a3f4e270d
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+7
View File
@@ -1116,6 +1116,13 @@ int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev)
if (amdgpu_sriov_vf(adev))
return 0;
/* resizing on Dell G5 SE platforms causes problems with runtime pm */
if ((amdgpu_runtime_pm != 0) &&
adev->pdev->vendor == PCI_VENDOR_ID_ATI &&
adev->pdev->device == 0x731f &&
adev->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL)
return 0;
/* PCI_EXT_CAP_ID_VNDR extended capability is located at 0x100 */
if (!pci_find_ext_capability(adev->pdev, PCI_EXT_CAP_ID_VNDR))
DRM_WARN("System can't access extended configuration space,please check!!\n");