diff options
Diffstat (limited to 'SecurityPkg/Pkcs7Verify')
| -rw-r--r-- | SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c b/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c index d9013212c1..0da549a6bd 100644 --- a/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c +++ b/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c @@ -1457,8 +1457,17 @@ Pkcs7VerifyDriverEntry ( IN EFI_SYSTEM_TABLE *SystemTable
)
{
- EFI_STATUS Status;
- EFI_HANDLE Handle;
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+ EFI_PKCS7_VERIFY_PROTOCOL Useless;
+
+ //
+ // Avoid loading a second copy if this is built as an external module
+ //
+ Status = gBS->LocateProtocol (&gEfiPkcs7VerifyProtocolGuid, NULL, (VOID **)&Useless);
+ if (!EFI_ERROR (Status)) {
+ return EFI_ABORTED;
+ }
//
// Install UEFI Pkcs7 Verification Protocol
|