[PATCH] efi: declare prototype for close_protocol BootService

[Ahmad Fatoum]

Sometimes, drivers need to probe whether the EFI device in front of them
is the actual hardware they expect. If it's not, the driver should call
close_protocol to leave the decision on whether to match this device to
another driver. Use the correct type for close_protocol to facilitate
this.

No functional change, as no in-tree driver makes use of this yet.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 include/efi.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/efi.h b/include/efi.h
index 43c05939513d..f6833fde1e75 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -256,7 +256,8 @@ typedef struct {
 	efi_status_t (EFIAPI *open_protocol)(efi_handle_t handle, efi_guid_t *protocol,
 			void ** interface, efi_handle_t agent_handle,
 			efi_handle_t controller_handle, u32 attributes);
-	void *close_protocol;
+	efi_status_t (EFIAPI *close_protocol)(efi_handle_t handle, efi_guid_t *protocol,
+					      efi_handle_t agent, efi_handle_t controller);
 	efi_status_t(EFIAPI *open_protocol_information)(efi_handle_t handle, efi_guid_t *Protocol,
 			struct efi_open_protocol_information_entry **entry_buffer,
 			unsigned long *entry_count);
-- 
2.30.0