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MdeModulePkg/UsbBusDxe: USB issue fix when the port reset 

BZ #4456

Fixed a bug which led to an ASSERT due to the USB device
context being maintained after a port reset, but the
underlying XHCI context was uninitialized. Specifically,
Xhc->UsbDevContext is freed after a reset and only
re-allocates the default [0] enpoint transfer ring.
In order to avoid a memory leak, device enumeration is
performed after freeing the necessary buffers. This
allocates the Xhc->UsbDevContext for all endpoints of
the USB device.

Signed-off-by: Britton Chesley <Brit.Chesley@amd.com>
This commit is contained in:
Britton Chesley 2023-05-16 15:40:50 -05:00 committed by mergify[bot]
parent 4f174696fd
commit ed07a2bb11
1 changed files with 26 additions and 1 deletions
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27
MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.c
View File

@ -3,6 +3,7 @@
Usb Bus Driver Binding and Bus IO Protocol.
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -821,6 +822,7 @@ UsbIoPortReset (
EFI_TPL OldTpl;
EFI_STATUS Status;
UINT8 DevAddress;
UINT8 Config;
OldTpl = gBS->RaiseTPL (USB_BUS_TPL);
@ -882,8 +884,26 @@ UsbIoPortReset (
// is in CONFIGURED state.
//
if (Dev->ActiveConfig != NULL) {
Status = UsbSetConfig (Dev, Dev->ActiveConfig->Desc.ConfigurationValue);
UsbFreeDevDesc (Dev->DevDesc);
Status = UsbRemoveConfig (Dev);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "UsbIoPortReset: Failed to remove configuration - %r\n", Status));
}
Status = UsbGetMaxPacketSize0 (Dev);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "UsbIoPortReset: Failed to get max packet size - %r\n", Status));
}
Status = UsbBuildDescTable (Dev);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "UsbIoPortReset: Failed to build descriptor table - %r\n", Status));
}
Config = Dev->DevDesc->Configs[0]->Desc.ConfigurationValue;
Status = UsbSetConfig (Dev, Config);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
@ -892,6 +912,11 @@ UsbIoPortReset (
Status
));
}
Status = UsbSelectConfig (Dev, Config);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "UsbIoPortReset: Failed to set configuration - %r\n", Status));
}
}
ON_EXIT: