efi_loader: installation of EFI_RNG_PROTOCOL
Having an EFI_RNG_PROTOCOL without a backing RNG device leads to failure
to boot Linux 5.8.
Only install the EFI_RNG_PROTOCOL if we have a RNG device.
Reported-by: Scott K Logan <logans@cottsay.net>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c
index 6196c0a..45226c5 100644
--- a/lib/efi_loader/efi_setup.c
+++ b/lib/efi_loader/efi_setup.c
@@ -151,6 +151,11 @@
if (ret != EFI_SUCCESS)
goto out;
#endif
+ if (IS_ENABLED(CONFIG_EFI_RNG_PROTOCOL)) {
+ ret = efi_rng_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
+ }
/* Initialize variable services */
ret = efi_init_variables();
if (ret != EFI_SUCCESS)