Inform drivers that register pci_drviver->aspm_changed(), about new ASPM
settings. Callback is only called for child (endpoint) devices.
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
---
drivers/pci/pcie/aspm.c | 5 ++++-
include/linux/pci.h | 3 +++
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 2883fc3..d7acec8 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -474,8 +474,11 @@ static void pcie_config_aspm_link(struct pcie_link_state *link, u32 state)
*/
if (state & ASPM_STATE_L1)
pcie_config_aspm_dev(parent, upstream);
- list_for_each_entry(child, &linkbus->devices, bus_list)
+ list_for_each_entry(child, &linkbus->devices, bus_list) {
pcie_config_aspm_dev(child, dwstream);
+ if (child->driver && child->driver->aspm_changed)
+ child->driver->aspm_changed(child, dwstream);
+ }
if (!(state & ASPM_STATE_L1))
pcie_config_aspm_dev(parent, upstream);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index c446b5c..2110d63 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -555,6 +555,9 @@ struct pci_driver {
int (*resume_early) (struct pci_dev *dev);
int (*resume) (struct pci_dev *dev); /* Device woken up */
void (*shutdown) (struct pci_dev *dev);
+#ifdef CONFIG_PCIEASPM
+ void (*aspm_changed) (struct pci_dev *dev, u32 state);
+#endif
struct pci_error_handlers *err_handler;
struct device_driver driver;
struct pci_dynids dynids;
--
1.7.1
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