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path: root/drivers/pci/pcie
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Diffstat (limited to 'drivers/pci/pcie')
-rw-r--r--drivers/pci/pcie/aspm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index e61b82e611c..eee09f756ec 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -770,6 +770,8 @@ static int pcie_aspm_set_policy(const char *val, struct kernel_param *kp)
int i;
struct pcie_link_state *link;
+ if (aspm_disabled)
+ return -EPERM;
for (i = 0; i < ARRAY_SIZE(policy_str); i++)
if (!strncmp(val, policy_str[i], strlen(policy_str[i])))
break;
@@ -824,6 +826,8 @@ static ssize_t link_state_store(struct device *dev,
struct pcie_link_state *link, *root = pdev->link_state->root;
u32 val = buf[0] - '0', state = 0;
+ if (aspm_disabled)
+ return -EPERM;
if (n < 1 || val > 3)
return -EINVAL;