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MdeModulePkg: Update USB descriptor information #6265

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MdeModulePkg: Update USB descriptor information #6265

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6 changes: 6 additions & 0 deletions MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.
Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent

**/
Expand Down Expand Up @@ -879,6 +880,11 @@ UsbIoPortReset (

DEBUG ((DEBUG_INFO, "UsbIoPortReset: device is now ADDRESSED at %d\n", Dev->Address));

//
// Endpoint descriptor state needs to be updated following a reset.
//
UsbUpdateDescriptors (Dev);

//
// Reset the current active configure, after this device
// is in CONFIGURED state.
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23 changes: 23 additions & 0 deletions MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
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Expand Up @@ -3,6 +3,7 @@
Manage Usb Descriptor List

Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.
SPDX-License-Identifier: BSD-2-Clause-Patent

**/
Expand Down Expand Up @@ -1009,3 +1010,25 @@ UsbIoClearFeature (

return Status;
}

/**
Update the device's descriptor information.
@param UsbDev The Usb device.
**/
VOID
UsbUpdateDescriptors (
IN USB_DEVICE *UsbDev
)
{
EFI_USB_CONFIG_DESCRIPTOR *ConfDesc;
EFI_USB_DEVICE_DESCRIPTOR DevDesc;
UINT8 Index;

UsbCtrlGetDesc (UsbDev, USB_DESC_TYPE_DEVICE, 0, 0, &DevDesc, sizeof (EFI_USB_DEVICE_DESCRIPTOR));
for (Index = 0; Index < DevDesc.NumConfigurations; Index++) {
ConfDesc = UsbGetOneConfig (UsbDev, Index);
FreePool (ConfDesc);
}

return;
}
10 changes: 10 additions & 0 deletions MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
Manage Usb Descriptor List

Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.
SPDX-License-Identifier: BSD-2-Clause-Patent

**/
Expand Down Expand Up @@ -224,4 +225,13 @@ UsbIoClearFeature (
IN UINT16 Index
);

/**
Usb UsbIo interface to update descriptor information.
@param UsbDev The Usb device.
**/
VOID
UsbUpdateDescriptors (
IN USB_DEVICE *UsbDev
);

#endif
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