efi/libstub: Drop protocol argument from efi_call_proto() macro

After refactoring the mixed mode support code, efi_call_proto()
no longer uses its protocol argument in any of its implementation,
so let's remove it altogether.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/20191224151025.32482-22-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

4 files changed, 14 insertions, 21 deletions

diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h
index 58e5acc424a0..bdc5288cc643 100644
--- a/arch/arm/include/asm/efi.h
+++ b/arch/arm/include/asm/efi.h
@@ -57,8 +57,7 @@ void efi_virtmap_unload(void);
 #define efi_table_attr(table, attr, instance)				\
 	instance->attr
 
-#define efi_call_proto(protocol, f, instance, ...)			\
-	instance->f(instance, ##__VA_ARGS__)
+#define efi_call_proto(inst, func, ...) inst->func(inst, ##__VA_ARGS__)
 
 struct screen_info *alloc_screen_info(void);
 void free_screen_info(struct screen_info *si);
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index d73693177f31..4bc1e89671ab 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h
@@ -100,8 +100,7 @@ static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
 #define efi_table_attr(table, attr, instance)				\
 	instance->attr
 
-#define efi_call_proto(protocol, f, instance, ...)			\
-	instance->f(instance, ##__VA_ARGS__)
+#define efi_call_proto(inst, func, ...) inst->func(inst, ##__VA_ARGS__)
 
 #define alloc_screen_info(x...)		&screen_info
 
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index ec92c4decc86..751fd5fc3367 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -69,27 +69,24 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
 	rom->pcilen	= pci->romsize;
 	*__rom = rom;
 
-	status = efi_call_proto(efi_pci_io_protocol, pci.read, pci,
-				EfiPciIoWidthUint16, PCI_VENDOR_ID, 1,
-				&rom->vendor);
+	status = efi_call_proto(pci, pci.read, EfiPciIoWidthUint16,
+				PCI_VENDOR_ID, 1, &rom->vendor);
 
 	if (status != EFI_SUCCESS) {
 		efi_printk("Failed to read rom->vendor\n");
 		goto free_struct;
 	}
 
-	status = efi_call_proto(efi_pci_io_protocol, pci.read, pci,
-				EfiPciIoWidthUint16, PCI_DEVICE_ID, 1,
-				&rom->devid);
+	status = efi_call_proto(pci, pci.read, EfiPciIoWidthUint16,
+				PCI_DEVICE_ID, 1, &rom->devid);
 
 	if (status != EFI_SUCCESS) {
 		efi_printk("Failed to read rom->devid\n");
 		goto free_struct;
 	}
 
-	status = efi_call_proto(efi_pci_io_protocol, get_location, pci,
-				&rom->segment, &rom->bus, &rom->device,
-				&rom->function);
+	status = efi_call_proto(pci, get_location, &rom->segment, &rom->bus,
+				&rom->device, &rom->function);
 
 	if (status != EFI_SUCCESS)
 		goto free_struct;
@@ -191,7 +188,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
 		return;
 	}
 
-	efi_call_proto(apple_properties_protocol, get_all, p, NULL, &size);
+	efi_call_proto(p, get_all, NULL, &size);
 	if (!size)
 		return;
 
@@ -204,8 +201,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
 			return;
 		}
 
-		status = efi_call_proto(apple_properties_protocol, get_all, p,
-					new->data, &size);
+		status = efi_call_proto(p, get_all, new->data, &size);
 
 		if (status == EFI_BUFFER_TOO_SMALL)
 			efi_call_early(free_pool, new);
@@ -280,8 +276,7 @@ setup_uga(struct screen_info *si, efi_guid_t *uga_proto, unsigned long size)
 		pciio = NULL;
 		efi_call_early(handle_protocol, handle, &pciio_proto, &pciio);
 
-		status = efi_call_proto(efi_uga_draw_protocol, get_mode, uga,
-					&w, &h, &depth, &refresh);
+		status = efi_call_proto(uga, get_mode, &w, &h, &depth, &refresh);
 		if (status == EFI_SUCCESS && (!first_uga || pciio)) {
 			width = w;
 			height = h;
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 1817f350618e..b7cd14e3a634 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -227,10 +227,10 @@ static inline bool efi_is_native(void)
 	__ret;								\
 })
 
-#define efi_call_proto(protocol, f, instance, ...)			\
+#define efi_call_proto(inst, func, ...)					\
 	(efi_is_native()						\
-		? instance->f(instance, ##__VA_ARGS__)			\
-		: efi64_thunk(instance->mixed_mode.f, instance,	##__VA_ARGS__))
+		? inst->func(inst, ##__VA_ARGS__)			\
+		: efi64_thunk(inst->mixed_mode.func, inst, ##__VA_ARGS__))
 
 #define efi_call_early(f, ...)						\
 	(efi_is_native()						\