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efi_loader: installation of EFI_RNG_PROTOCOL

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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>
This commit is contained in:
Heinrich Schuchardt 2020-09-25 12:50:19 +02:00
parent 796933510f
commit b59c13d42f
4 changed files with 36 additions and 6 deletions
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5
lib/efi_loader/efi_setup.c
View file

@ -151,6 +151,11 @@ efi_status_t efi_init_obj_list(void)
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)