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| author | Bjorn Helgaas <bhelgaas@google.com> | 2015-06-10 14:00:21 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-06-10 14:00:21 -0500 |
| commit | 0c0cbb6c5a04a169320df1812e58b10362865e95 (patch) | |
| tree | 934e5da8eff7c0b858eab59a1a167f22a1713818 /drivers/pci/pcie/aspm.c | |
| parent | 777e61ea40e4a94081b3123c76ea3fe977c368a2 (diff) | |
| download | blackbird-obmc-linux-0c0cbb6c5a04a169320df1812e58b10362865e95.tar.gz blackbird-obmc-linux-0c0cbb6c5a04a169320df1812e58b10362865e95.zip | |
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/aspm.c')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 13 |
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; } |
