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authorBjorn Helgaas <bhelgaas@google.com>2015-06-10 22:00:21 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-06-10 22:00:21 +0300
commit0c0cbb6c5a04a169320df1812e58b10362865e95 (patch)
tree934e5da8eff7c0b858eab59a1a167f22a1713818 /drivers/pci/pcie
parent777e61ea40e4a94081b3123c76ea3fe977c368a2 (diff)
downloadlinux-0c0cbb6c5a04a169320df1812e58b10362865e95.tar.xz
PCI/ASPM: Simplify Clock Power Management setting
Update the Link Control Enable Clock Power Management bit the same way we update the ASPM Control bits, with a single call of pcie_capability_clear_and_set_word(). No functional change; this just makes both paths use the same style. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie')
-rw-r--r--drivers/pci/pcie/aspm.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index a84f87247d2f..317e3558a35e 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -127,15 +127,12 @@ static void pcie_set_clkpm_nocheck(struct pcie_link_state *link, int enable)
{
struct pci_dev *child;
struct pci_bus *linkbus = link->pdev->subordinate;
+ u32 val = enable ? PCI_EXP_LNKCTL_CLKREQ_EN : 0;
- list_for_each_entry(child, &linkbus->devices, bus_list) {
- if (enable)
- pcie_capability_set_word(child, PCI_EXP_LNKCTL,
- PCI_EXP_LNKCTL_CLKREQ_EN);
- else
- pcie_capability_clear_word(child, PCI_EXP_LNKCTL,
- PCI_EXP_LNKCTL_CLKREQ_EN);
- }
+ list_for_each_entry(child, &linkbus->devices, bus_list)
+ pcie_capability_clear_and_set_word(child, PCI_EXP_LNKCTL,
+ PCI_EXP_LNKCTL_CLKREQ_EN,
+ val);
link->clkpm_enabled = !!enable;
}