efi/x86: Clean up the eboot code

Various small cleanups:

 - Standardize printk messages:

     'alloc' => 'allocate'
     'mem'   => 'memory'

   also put variable names in printk messages between quotes.

 - Align mass-assignments vertically for better readability

 - Break multi-line function prototypes at the name where possible,
   not in the middle of the parameter list

 - Use a newline before return statements consistently.

 - Use curly braces in a balanced fashion.

 - Remove stray newlines.

No change in functionality.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180711094040.12506-2-ard.biesheuvel@linaro.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/boot/compressed/eboot.c

@@ -64,6 +64,7 @@ static inline efi_status_t __open_volume32(void *__image, void **__fh)
 		efi_printk(sys_table, "Failed to open volume\n");
 
 	*__fh = fh;
+
 	return status;
 }
 
@@ -90,6 +91,7 @@ static inline efi_status_t __open_volume64(void *__image, void **__fh)
 		efi_printk(sys_table, "Failed to open volume\n");
 
 	*__fh = fh;
+
 	return status;
 }
 
@@ -134,7 +136,7 @@ __setup_efi_pci(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
 
 	status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom);
 	if (status != EFI_SUCCESS) {
-		efi_printk(sys_table, "Failed to alloc mem for rom\n");
+		efi_printk(sys_table, "Failed to allocate memory for 'rom'\n");
 		return status;
 	}
 
@@ -180,8 +182,7 @@ __setup_efi_pci(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
 }
 
 static void
-setup_efi_pci32(struct boot_params *params, void **pci_handle,
-		unsigned long size)
+setup_efi_pci32(struct boot_params *params, void **pci_handle, unsigned long size)
 {
 	efi_pci_io_protocol_t *pci = NULL;
 	efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
@@ -220,13 +221,11 @@ setup_efi_pci32(struct boot_params *params, void **pci_handle,
 			params->hdr.setup_data = (unsigned long)rom;
 
 		data = (struct setup_data *)rom;
-
 	}
 }
 
 static void
-setup_efi_pci64(struct boot_params *params, void **pci_handle,
-		unsigned long size)
+setup_efi_pci64(struct boot_params *params, void **pci_handle, unsigned long size)
 {
 	efi_pci_io_protocol_t *pci = NULL;
 	efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
@@ -265,7 +264,6 @@ setup_efi_pci64(struct boot_params *params, void **pci_handle,
 			params->hdr.setup_data = (unsigned long)rom;
 
 		data = (struct setup_data *)rom;
-
 	}
 }
 
@@ -295,7 +293,7 @@ static void setup_efi_pci(struct boot_params *params)
 					size, (void **)&pci_handle);
 
 		if (status != EFI_SUCCESS) {
-			efi_printk(sys_table, "Failed to alloc mem for pci_handle\n");
+			efi_printk(sys_table, "Failed to allocate memory for 'pci_handle'\n");
 			return;
 		}
 
@@ -341,8 +339,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
 		status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
 					size + sizeof(struct setup_data), &new);
 		if (status != EFI_SUCCESS) {
-			efi_printk(sys_table,
-					"Failed to alloc mem for properties\n");
+			efi_printk(sys_table, "Failed to allocate memory for 'properties'\n");
 			return;
 		}
 
@@ -358,9 +355,9 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
 	new->next = 0;
 
 	data = (struct setup_data *)(unsigned long)boot_params->hdr.setup_data;
-	if (!data)
+	if (!data) {
 		boot_params->hdr.setup_data = (unsigned long)new;
-	else {
+	} else {
 		while (data->next)
 			data = (struct setup_data *)(unsigned long)data->next;
 		data->next = (unsigned long)new;
@@ -473,8 +470,8 @@ setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height)
 /*
  * See if we have Universal Graphics Adapter (UGA) protocol
  */
-static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
-			      unsigned long size)
+static efi_status_t
+setup_uga(struct screen_info *si, efi_guid_t *uga_proto, unsigned long size)
 {
 	efi_status_t status;
 	u32 width, height;
@@ -520,6 +517,7 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
 
 free_handle:
 	efi_call_early(free_pool, uga_handle);
+
 	return status;
 }
 
@@ -601,7 +599,7 @@ struct boot_params *make_boot_params(struct efi_config *c)
 	status = efi_low_alloc(sys_table, 0x4000, 1,
 			       (unsigned long *)&boot_params);
 	if (status != EFI_SUCCESS) {
-		efi_printk(sys_table, "Failed to alloc lowmem for boot params\n");
+		efi_printk(sys_table, "Failed to allocate lowmem for boot params\n");
 		return NULL;
 	}
 
@@ -627,6 +625,7 @@ struct boot_params *make_boot_params(struct efi_config *c)
 	cmdline_ptr = efi_convert_cmdline(sys_table, image, &options_size);
 	if (!cmdline_ptr)
 		goto fail;
+
 	hdr->cmd_line_ptr = (unsigned long)cmdline_ptr;
 	/* Fill in upper bits of command line address, NOP on 32 bit  */
 	boot_params->ext_cmd_line_ptr = (u64)(unsigned long)cmdline_ptr >> 32;
@@ -663,10 +662,12 @@ struct boot_params *make_boot_params(struct efi_config *c)
 	boot_params->ext_ramdisk_size  = (u64)ramdisk_size >> 32;
 
 	return boot_params;
+
 fail2:
 	efi_free(sys_table, options_size, hdr->cmd_line_ptr);
 fail:
 	efi_free(sys_table, 0x4000, (unsigned long)boot_params);
+
 	return NULL;
 }
 
@@ -692,8 +693,8 @@ static void add_e820ext(struct boot_params *params,
 		params->hdr.setup_data = (unsigned long)e820ext;
 }
 
-static efi_status_t setup_e820(struct boot_params *params,
-			       struct setup_data *e820ext, u32 e820ext_size)
+static efi_status_t
+setup_e820(struct boot_params *params, struct setup_data *e820ext, u32 e820ext_size)
 {
 	struct boot_e820_entry *entry = params->e820_table;
 	struct efi_info *efi = &params->efi_info;
@@ -894,6 +895,7 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
 
 	e820ext			= priv.e820ext;
 	e820ext_size		= priv.e820ext_size;
+
 	/* Historic? */
 	boot_params->alt_mem_k	= 32 * 1024;
 
@@ -908,8 +910,8 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
  * On success we return a pointer to a boot_params structure, and NULL
  * on failure.
  */
-struct boot_params *efi_main(struct efi_config *c,
-			     struct boot_params *boot_params)
+struct boot_params *
+efi_main(struct efi_config *c, struct boot_params *boot_params)
 {
 	struct desc_ptr *gdt = NULL;
 	efi_loaded_image_t *image;
@@ -957,7 +959,7 @@ struct boot_params *efi_main(struct efi_config *c,
 	status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
 				sizeof(*gdt), (void **)&gdt);
 	if (status != EFI_SUCCESS) {
-		efi_printk(sys_table, "Failed to alloc mem for gdt structure\n");
+		efi_printk(sys_table, "Failed to allocate memory for 'gdt' structure\n");
 		goto fail;
 	}
 
@@ -965,7 +967,7 @@ struct boot_params *efi_main(struct efi_config *c,
 	status = efi_low_alloc(sys_table, gdt->size, 8,
 			   (unsigned long *)&gdt->address);
 	if (status != EFI_SUCCESS) {
-		efi_printk(sys_table, "Failed to alloc mem for gdt\n");
+		efi_printk(sys_table, "Failed to allocate memory for 'gdt'\n");
 		goto fail;
 	}
 
@@ -1015,6 +1017,7 @@ struct boot_params *efi_main(struct efi_config *c,
 		desc->d		= SEG_OP_SIZE_32BIT;
 		desc->g		= SEG_GRANULARITY_4KB;
 		desc->base2	= 0x00;
+
 		desc++;
 	} else {
 		/* Second entry is unused on 32-bit */
@@ -1031,6 +1034,7 @@ struct boot_params *efi_main(struct efi_config *c,
 	desc->p		= 1;
 	desc->limit1	= 0xf;
 	desc->avl	= 0;
+
 	if (IS_ENABLED(CONFIG_X86_64)) {
 		desc->l = 1;
 		desc->d = 0;
@@ -1082,5 +1086,6 @@ struct boot_params *efi_main(struct efi_config *c,
 	return boot_params;
 fail:
 	efi_printk(sys_table, "efi_main() failed!\n");
+
 	return NULL;
 }