diff options
Diffstat (limited to 'MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c')
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c index 2fcacad46e..e3752d1f83 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c @@ -968,6 +968,15 @@ UsbHubResetPort ( UINTN Index;
EFI_STATUS Status;
+ Status = UsbHubGetPortStatus (HubIf, Port, &PortState);
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ } else if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_RESET)) {
+ DEBUG (( EFI_D_INFO, "UsbHubResetPort: skip reset on hub %p port %d\n", HubIf, Port));
+ return EFI_SUCCESS;
+ }
+
Status = UsbHubSetPortFeature (HubIf, Port, (EFI_USB_PORT_FEATURE) USB_HUB_PORT_RESET);
if (EFI_ERROR (Status)) {
@@ -1272,6 +1281,16 @@ UsbRootHubResetPort ( // should be handled in the EHCI driver.
//
Bus = RootIf->Device->Bus;
+
+ Status = UsbHcGetRootHubPortStatus (Bus, Port, &PortState);
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ } else if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_RESET)) {
+ DEBUG (( EFI_D_INFO, "UsbRootHubResetPort: skip reset on root port %d\n", Port));
+ return EFI_SUCCESS;
+ }
+
Status = UsbHcSetRootHubPortFeature (Bus, Port, EfiUsbPortReset);
if (EFI_ERROR (Status)) {
|