Since commit 226cddbe32f0 ("efi_loader: check device path in
InstallMultipleProtocolInterfaces") iPXE fails to access the network.
LocateDevicePath() returns EFI_SUCCESS even if a shorter path is found as a
partial match. It returns the remaining path. So to be sure that we found a
complete match we need to check that the remaining path refers to an end
node.
Provide debug output if a device path has already been installed.
Fixes: 226cddbe32f0 ("efi_loader: check device path in
InstallMultipleProtocolInterfaces")
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
lib/efi_loader/efi_boottime.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 971bd5ffa3..54fff85e64 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -2360,7 +2360,10 @@ efi_status_t EFIAPI
efi_install_multiple_protocol_interfaces
r = EFI_CALL(efi_locate_device_path(protocol, &dp,
&old_handle));
- if (r == EFI_SUCCESS) {
+ if (r == EFI_SUCCESS &&
+ dp->type == DEVICE_PATH_TYPE_END) {
+ EFI_PRINT("Path %pD already installed\n",
+ protocol_interface);
r = EFI_ALREADY_STARTED;
break;
}
--
2.20.1
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
