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Revert "Stop USB enumeration in case a malformed descriptor is found (#…
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…410)" (#493)

## Description

This reverts commit 714d41b.

Some devices are dependent on this functionality and can be important
sources of input during boot. Until a more robust solution is devised
that can support these devices, this change is reverted.

- [x] Impacts functionality?
- **Functionality** - Does the change ultimately impact how firmware
functions?
- Examples: Add a new library, publish a new PPI, update an algorithm,
...
- [ ] Impacts security?
- **Security** - Does the change have a direct security impact on an
application,
    flow, or firmware?
  - Examples: Crypto algorithm change, buffer overflow fix, parameter
    validation improvement, ...
- [ ] Breaking change?
- **Breaking change** - Will anyone consuming this change experience a
break
    in build or boot behavior?
- Examples: Add a new library class, move a module to a different repo,
call
    a function in a new library class in a pre-existing module, ...
- [ ] Includes tests?
  - **Tests** - Does the change include any explicit test code?
  - Examples: Unit tests, integration tests, robot tests, ...
- [ ] Includes documentation?
- **Documentation** - Does the change contain explicit documentation
additions
    outside direct code modifications (and comments)?
- Examples: Update readme file, add feature readme file, link to
documentation
    on an a separate Web page, ...

## How This Was Tested

Verified a USB mass storage device that failed to enumerate with
the change can be enumerated after reverting it.

## Integration Instructions

N/A

Signed-off-by: Michael Kubacki <[email protected]>
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makubacki authored Jul 18, 2023
1 parent 3f022da commit 4a53c6a
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
Original file line number Diff line number Diff line change
Expand Up @@ -396,7 +396,7 @@ UsbParseConfigDesc (

if (Setting == NULL) {
DEBUG ((DEBUG_ERROR, "UsbParseConfigDesc: warning: failed to get interface setting, stop parsing now.\n"));
goto ON_ERROR; // MU_CHANGE
break;
} else if (Setting->Desc.InterfaceNumber >= NumIf) {
DEBUG ((DEBUG_ERROR, "UsbParseConfigDesc: malformatted interface descriptor\n"));

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