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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-04-22 08:28:35 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-04-22 08:28:35 +0200 |
| commit | 57b8628bb0ac4e47c806e45c5bbd89282e93869b (patch) | |
| tree | ee9289f0898054474b7e5054abdb3ffb78666436 /drivers/pci/pcie/aspm.c | |
| parent | Input: serio_raw - ensure we don't block in non-blocking read (diff) | |
| parent | Linux 3.4-rc4 (diff) | |
| download | linux-57b8628bb0ac4e47c806e45c5bbd89282e93869b.tar.xz linux-57b8628bb0ac4e47c806e45c5bbd89282e93869b.zip | |
Merge commit 'v3.4-rc4' into next
Diffstat (limited to 'drivers/pci/pcie/aspm.c')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 1cfbf228fbb1..b500840a143b 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -76,7 +76,15 @@ static LIST_HEAD(link_list); #define POLICY_DEFAULT 0 /* BIOS default setting */ #define POLICY_PERFORMANCE 1 /* high performance */ #define POLICY_POWERSAVE 2 /* high power saving */ + +#ifdef CONFIG_PCIEASPM_PERFORMANCE +static int aspm_policy = POLICY_PERFORMANCE; +#elif defined CONFIG_PCIEASPM_POWERSAVE +static int aspm_policy = POLICY_POWERSAVE; +#else static int aspm_policy; +#endif + static const char *policy_str[] = { [POLICY_DEFAULT] = "default", [POLICY_PERFORMANCE] = "performance", @@ -508,6 +516,16 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev) pos = pci_pcie_cap(child); if (!pos) return -EINVAL; + + /* + * If ASPM is disabled then we're not going to change + * the BIOS state. It's safe to continue even if it's a + * pre-1.1 device + */ + + if (aspm_disabled) + continue; + /* * Disable ASPM for pre-1.1 PCIe device, we follow MS to use * RBER bit to determine if a function is 1.1 version device |