PCI: pcie: Add support for setting default ASPM policy

Distributions may wish to provide different defaults for PCIE ASPM
depending on their target audience. Provide a configuration option for
choosing the default policy.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 1cfbf228fbb1..a0de5e123046 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",