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efi_loader: simplify efi_install_protocol_interface

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Use helper functio efi_add_protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2017-10-26 19:25:54 +02:00 committed by Alexander Graf
parent 3f79a2b532
commit 1202530d22
1 changed files with 2 additions and 36 deletions
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38
lib/efi_loader/efi_boottime.c
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@ -839,8 +839,6 @@ static efi_status_t EFIAPI efi_install_protocol_interface(
void **handle, const efi_guid_t *protocol,
int protocol_interface_type, void *protocol_interface)
{
struct list_head *lhandle;
int i;
efi_status_t r;
EFI_ENTRY("%p, %pUl, %d, %p", handle, protocol, protocol_interface_type,
@ -863,40 +861,8 @@ static efi_status_t EFIAPI efi_install_protocol_interface(
debug("%sEFI: handle %p\n", indent_string(nesting_level),
*handle);
}
/* Find object. */
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
efiobj = list_entry(lhandle, struct efi_object, link);
if (efiobj->handle != *handle)
continue;
/* Check if protocol is already installed on the handle. */
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
struct efi_handler *handler = &efiobj->protocols[i];
if (!handler->guid)
continue;
if (!guidcmp(handler->guid, protocol)) {
r = EFI_INVALID_PARAMETER;
goto out;
}
}
/* Install protocol in first empty slot. */
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
struct efi_handler *handler = &efiobj->protocols[i];
if (handler->guid)
continue;
handler->guid = protocol;
handler->protocol_interface = protocol_interface;
r = EFI_SUCCESS;
goto out;
}
r = EFI_OUT_OF_RESOURCES;
goto out;
}
r = EFI_INVALID_PARAMETER;
/* Add new protocol */
r = efi_add_protocol(*handle, protocol, protocol_interface);
out:
return EFI_EXIT(r);
}