My desktop always painc in pcie_aspm_init_link_state. Looks commit
4949be16822e92 causes it. The FADT declaims the system doesn't support ASPM.
Below patch fixes the painc for me. I'm quite strange we still touch aspm
registers even aspm_disabled.
Signed-off-by: Shaohua Li <shli@xxxxxxxxxx>
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 24f049e..2e8eb86 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -500,9 +500,6 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev)
int pos;
u32 reg32;
- if (aspm_disabled)
- return 0;
-
/*
* Some functions in a slot might not all be PCIe functions,
* very strange. Disable ASPM for the whole slot
@@ -566,7 +563,11 @@ static struct pcie_link_state
*alloc_pcie_link_state(struct pci_dev *pdev)
void pcie_aspm_init_link_state(struct pci_dev *pdev)
{
struct pcie_link_state *link;
- int blacklist = !!pcie_aspm_sanity_check(pdev);
+ int blacklist;
+
+ if (aspm_disabled)
+ return;
+ blacklist = !!pcie_aspm_sanity_check(pdev);
if (!pci_is_pcie(pdev) || pdev->link_state)
return;
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
