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MdeModulePkg/UsbBusDxe: Add missing "return NULL" in UsbCreateDesc() 

When (Len < Offset) is TRUE, indicating the data to visit is beyond
the boundary, the error message is printed but the function doesn't
return NULL.

It's a typo when modifying the commit 4c034bf62.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Ruiyu Ni 2018-10-29 11:54:45 +08:00
parent c09b254bdc
commit c87ac38cf2
1 changed files with 1 additions and 0 deletions
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MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
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@ -229,6 +229,7 @@ UsbCreateDesc (
// //
if (Len < Offset) { if (Len < Offset) {
DEBUG ((DEBUG_ERROR, "UsbCreateDesc: met mal-format descriptor, Offset/Len = %d/%d!\n", Offset, Len)); DEBUG ((DEBUG_ERROR, "UsbCreateDesc: met mal-format descriptor, Offset/Len = %d/%d!\n", Offset, Len));
return NULL;
} }
if ((Head->Type != Type) || (Head->Len < DescLen)) { if ((Head->Type != Type) || (Head->Len < DescLen)) {