boot: Correctly check the return value of CheckEvent

Fixes: #22428

diff --git a/src/boot/efi/console.c b/src/boot/efi/console.c
index 3a0cf535e15c995e878b626057628febb545ca2d..cd5c8b63480eb9041595cf6b3851f902469832ff 100644 (file)
--- a/src/boot/efi/console.c
+++ b/src/boot/efi/console.c
@@ -147,7 +147,7 @@ EFI_STATUS console_key_read(UINT64 *key, UINT64 timeout_usec) {
                 }
 
                 return EFI_NOT_READY;
-        } else if (BS->CheckEvent(ST->ConIn->WaitForKey)) {
+        } else if (!EFI_ERROR(BS->CheckEvent(ST->ConIn->WaitForKey))) {
                 EFI_INPUT_KEY k;
 
                 err = ST->ConIn->ReadKeyStroke(ST->ConIn, &k);