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efi_loader: correct HandleProtocol()

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The UEFI specification requires that when a protocol is opened via
HandleProtocol() the agent handle is the image handle of the EFI firmware
(see chapter on EFI_BOOT_SERVICES.OpenProtocol()).

Let efi_handle_protocol() pass efi_root as agent handle to
efi_open_protocol().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-06-01 19:29:39 +02:00
parent 5ec48e38ee
commit 755d42d420
1 changed files with 1 additions and 1 deletions
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2
lib/efi_loader/efi_boottime.c
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@ -3073,7 +3073,7 @@ static efi_status_t EFIAPI efi_handle_protocol(efi_handle_t handle,
const efi_guid_t *protocol,
void **protocol_interface)
{
return efi_open_protocol(handle, protocol, protocol_interface, NULL,
return efi_open_protocol(handle, protocol, protocol_interface, efi_root,
NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
}