drm/amd/amdgpu: fix PCIe dpm feature issue (v3) (ad51c46e) · Commits · 戴 / test

use pcie_bandwidth_available to get real link state to update pcie table. v2: fix incorrect initialized return value v3: expand the fetching method about the link width to all asics. Signed-off-by:

Chengming Gui <Jack.Gui@amd.com> Reviewed-by:

Alex Deucher <alexander.deucher@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -3625,6 +3625,7 @@ static void amdgpu_device_get_min_pci_speed_width(struct amdgpu_device *adev,
		struct pci_dev *pdev = adev->pdev;
		enum pci_bus_speed cur_speed;
		enum pcie_link_width cur_width;
		u32 ret = 1;

		*speed = PCI_SPEED_UNKNOWN;
		*width = PCIE_LNK_WIDTH_UNKNOWN;
		@@ -3632,6 +3633,10 @@ static void amdgpu_device_get_min_pci_speed_width(struct amdgpu_device *adev,
		while (pdev) {
		cur_speed = pcie_get_speed_cap(pdev);
		cur_width = pcie_get_width_cap(pdev);
		ret = pcie_bandwidth_available(adev->pdev, NULL,
		NULL, &cur_width);
		if (!ret)
		cur_width = PCIE_LNK_WIDTH_RESRV;

		if (cur_speed != PCI_SPEED_UNKNOWN) {
		if (*speed == PCI_SPEED_UNKNOWN)

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