Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 23ebccb46c5c9e594fe777fef9ede4de2e4b584d
https://github.com/tianocore/edk2/commit/23ebccb46c5c9e594fe777fef9ede4de2e4b584d
Author: Jared Pan <[email protected]>
Date: 2026-06-30 (Tue, 30 Jun 2026)
Changed paths:
M MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h
M MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
M MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
Log Message:
-----------
MdeModulePkg/UsbBusDxe: Improve USB enumerating process
The patch enhances the USB enumeration process in EDK2 to improve compatibility
with non-standards-compliant devices that may fail during standard enumeration
sequences.
The suggested solution is based on USB specifications and references
implementations from both Linux and Windows environments.
[Suggested solution]
- Integrated a retry mechanism to sequentially execute enumeration scripts,
inspired by the enumeration flows of Windows, Linux, and EDK2. This improves
robustness when handling corner-case devices.
- Do sanity check while the device report the device descriptor.
- AMD XHCI might need to wait for more time while sending the CLEAR_FEATURE
reuqest.
Signed-off-by: Marlboro Chuang <[email protected]>
Signed-off-by: Jared Pan <[email protected]>
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