Hi Bjorn,
On 3/23/20 5:26 PM, sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx wrote:
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
+void pcie_do_recovery(struct pci_dev *dev,
+ enum pci_channel_state state,
+ pci_ers_result_t (*reset_link)(struct pci_dev *pdev))
{
pci_ers_result_t status = PCI_ERS_RESULT_CAN_RECOVER;
struct pci_bus *bus;
@@ -206,9 +165,12 @@ void pcie_do_recovery(struct pci_dev *dev, enum pci_channel_state state,
pci_dbg(dev, "broadcast error_detected message\n");
if (state == pci_channel_io_frozen) {
pci_walk_bus(bus, report_frozen_detected, &status);
- status = reset_link(dev, service);
- if if (reset_link)
status = reset_link(dev);(status == PCI_ERS_RESULT_DISCONNECT
+ status = reset_link(dev);
Above line needs to be replaced as below. Since there is a
possibility reset_link can NULL (eventhough currently its
not true).
if (reset_link)
status = reset_link(dev);
Shall I submit another version to add above fix on top of
our pci/edr branch ?
+ if ((status != PCI_ERS_RESULT_RECOVERED) &&
+ (status != PCI_ERS_RESULT_NEED_RESET)) {
+ pci_dbg(dev, "link reset at upstream device failed\n");
goto failed;
+ }
} else {
pci_walk_bus(bus, report_normal_detected, &status);
}
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index 1e673619b101..64b5e081cdb2 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -92,9 +92,6 @@ struct pcie_port_service_driver {
/* Device driver may resume normal operations */
void (*error_resume)(struct pci_dev *dev);
- /* Link Reset Capability - AER service driver specific */
- pci_ers_result_t (*reset_link)(struct pci_dev *dev);
-
int port_type; /* Type of the port this driver can handle */
u32 service; /* Port service this device represents */
@@ -161,7 +158,5 @@ static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
}
#endif
-struct pcie_port_service_driver *pcie_port_find_service(struct pci_dev *dev,
- u32 service);
struct device *pcie_port_find_device(struct pci_dev *dev, u32 service);
#endif /* _PORTDRV_H_ */
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index 5075cb9e850c..50a9522ab07d 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -458,27 +458,6 @@ static int find_service_iter(struct device *device, void *data)
return 0;
}
-/**
- * pcie_port_find_service - find the service driver
- * @dev: PCI Express port the service is associated with
- * @service: Service to find
- *
- * Find PCI Express port service driver associated with given service
- */
-struct pcie_port_service_driver *pcie_port_find_service(struct pci_dev *dev,
- u32 service)
-{
- struct pcie_port_service_driver *drv;
- struct portdrv_service_data pdrvs;
-
- pdrvs.drv = NULL;
- pdrvs.service = service;
- device_for_each_child(&dev->dev, &pdrvs, find_service_iter);
-
- drv = pdrvs.drv;
- return drv;
-}
-
/**
* pcie_port_find_device - find the struct device
* @dev: PCI Express port the service is associated with
