Commit 089888c4 authored by Alex Deucher's avatar Alex Deucher

drm/radeon: check if device is root before getting pci speed caps

Check if the device is root rather before attempting to see what
speeds the pcie port supports.  Fixes a crash with pci passthrough
in a VM.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=109366Reviewed-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 84d32455
......@@ -5676,7 +5676,7 @@ int ci_dpm_init(struct radeon_device *rdev)
u16 data_offset, size;
u8 frev, crev;
struct ci_power_info *pi;
enum pci_bus_speed speed_cap;
enum pci_bus_speed speed_cap = PCI_SPEED_UNKNOWN;
struct pci_dev *root = rdev->pdev->bus->self;
int ret;
......@@ -5685,6 +5685,7 @@ int ci_dpm_init(struct radeon_device *rdev)
return -ENOMEM;
rdev->pm.dpm.priv = pi;
if (!pci_is_root_bus(rdev->pdev->bus))
speed_cap = pcie_get_speed_cap(root);
if (speed_cap == PCI_SPEED_UNKNOWN) {
pi->sys_pcie_mask = 0;
......
......@@ -6899,7 +6899,7 @@ int si_dpm_init(struct radeon_device *rdev)
struct ni_power_info *ni_pi;
struct si_power_info *si_pi;
struct atom_clock_dividers dividers;
enum pci_bus_speed speed_cap;
enum pci_bus_speed speed_cap = PCI_SPEED_UNKNOWN;
struct pci_dev *root = rdev->pdev->bus->self;
int ret;
......@@ -6911,6 +6911,7 @@ int si_dpm_init(struct radeon_device *rdev)
eg_pi = &ni_pi->eg;
pi = &eg_pi->rv7xx;
if (!pci_is_root_bus(rdev->pdev->bus))
speed_cap = pcie_get_speed_cap(root);
if (speed_cap == PCI_SPEED_UNKNOWN) {
si_pi->sys_pcie_mask = 0;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment