On Wed, Feb 19, 2025 at 11:39 AM Alex Deucher <alexander.deucher@xxxxxxx> wrote: > > 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 runtim pm on Dell laptops runtim -> runtime fixed locally. Alex > 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: 907830b0fc9e ("PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse") > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index 5ec71f146fa93..cae6dcb95a131 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -1662,6 +1662,13 @@ 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"); > -- > 2.48.1 >
