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authorAlex Deucher <alexander.deucher@amd.com>2019-01-15 12:05:16 -0500
committerAlex Deucher <alexander.deucher@amd.com>2019-01-29 10:57:02 -0500
commitafeff4c16edaa6275b903f82b0561406259aa3a3 (patch)
tree562975a49a29fdcfa4756cb76f6465ae4b1cb826 /drivers
parentdc14eb12f6bb3e779c5461429c1889a339c67aab (diff)
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=109366 Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/radeon/ci_dpm.c5
-rw-r--r--drivers/gpu/drm/radeon/si_dpm.c5
2 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index d587779a80b4..a97294ac96d5 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -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;
@@ -5685,7 +5685,8 @@ int ci_dpm_init(struct radeon_device *rdev)
return -ENOMEM;
rdev->pm.dpm.priv = pi;
- speed_cap = pcie_get_speed_cap(root);
+ 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;
} else {
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 8fb60b3af015..0a785ef0ab66 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -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;
@@ -6911,7 +6911,8 @@ int si_dpm_init(struct radeon_device *rdev)
eg_pi = &ni_pi->eg;
pi = &eg_pi->rv7xx;
- speed_cap = pcie_get_speed_cap(root);
+ 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;
} else {