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authorYijing Wang <wangyijing@huawei.com>2013-05-28 16:03:22 +0800
committerBjorn Helgaas <bhelgaas@google.com>2013-05-28 11:16:12 -0600
commit2dfca877b3c599ec081c23939b34ee22576e0833 (patch)
tree3db3d82d193f2c08593313ec55f4304e43d4bfd6 /drivers/pci
parentea221e64140f6fa543c29e31349001167b9f8ad0 (diff)
PCI: Fix kerneldoc for pci_disable_link_state()
Fix kerneldoc for pci_disable_link_state(). [bhelgaas: expand comment, fix typos] Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pcie/aspm.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index faa83b632a84..403a44374ed5 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -714,10 +714,6 @@ void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
up_read(&pci_bus_sem);
}
-/*
- * pci_disable_link_state - disable pci device's link state, so the link will
- * never enter specific states
- */
static void __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem,
bool force)
{
@@ -771,6 +767,15 @@ void pci_disable_link_state_locked(struct pci_dev *pdev, int state)
}
EXPORT_SYMBOL(pci_disable_link_state_locked);
+/**
+ * pci_disable_link_state - Disable device's link state, so the link will
+ * never enter specific states. Note that if the BIOS didn't grant ASPM
+ * control to the OS, this does nothing because we can't touch the LNKCTL
+ * register.
+ *
+ * @pdev: PCI device
+ * @state: ASPM link state to disable
+ */
void pci_disable_link_state(struct pci_dev *pdev, int state)
{
__pci_disable_link_state(pdev, state, true, false);