[PATCH v3 4/9] ACPI: clean up checkpatch warnings for items with possible semantic value

[al.stone at linaro.org]

From: Al Stone <al.stone at linaro.org>

In preparation for later splitting out some of the arch-dependent code from
osl.c, clean up some warnings from checkpatch that fall into more semantic
issues; none of these should change functionality, but they do touch lines
of code with semantic significance:

   -- replaced #include <asm/foo.h> with #include <linux/foo.h>
   -- replaced extern that was only being used for sizeof() with a #define
   -- removed use of else after breaks/returns when not useful
   -- moved __initdata to the proper place in a definition
   -- moved EXPORT_SYMBOL to a line immediately after the function
   -- removed unnecessary return statements from void functions

Signed-off-by: Al Stone <al.stone at linaro.org>
---
 drivers/acpi/osl.c | 31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 46317ff..af6dda7 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -40,9 +40,8 @@
 #include <linux/list.h>
 #include <linux/jiffies.h>
 #include <linux/semaphore.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 
 #include "internal.h"
 
@@ -66,7 +65,7 @@ struct acpi_os_dpc {
 int acpi_in_debugger;
 EXPORT_SYMBOL(acpi_in_debugger);
 
-extern char line_buf[80];
+#define DEBUGGER_LINE_BUFLEN	80
 #endif				/*ENABLE_DEBUGGER */
 
 static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
@@ -268,10 +267,8 @@ acpi_physical_address __init acpi_os_get_root_pointer(void)
 			return efi.acpi20;
 		else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
 			return efi.acpi;
-		else {
-			pr_err(PREFIX "System description tables not found\n");
-			return 0;
-		}
+		pr_err(PREFIX "System description tables not found\n");
+		return 0;
 	} else if (IS_ENABLED(CONFIG_ACPI_LEGACY_TABLES_LOOKUP)) {
 		acpi_physical_address pa = 0;
 
@@ -594,7 +591,7 @@ static const char * const table_sigs[] = {
 #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
 
 #define ACPI_OVERRIDE_TABLES 64
-static struct cpio_data __initdata acpi_initrd_files[ACPI_OVERRIDE_TABLES];
+static struct cpio_data acpi_initrd_files[ACPI_OVERRIDE_TABLES] __initdata;
 
 #define MAP_CHUNK_SIZE   (NR_FIX_BTMAPS << PAGE_SHIFT)
 
@@ -806,10 +803,10 @@ static irqreturn_t acpi_irq(int irq, void *dev_id)
 	if (handled) {
 		acpi_irq_handled++;
 		return IRQ_HANDLED;
-	} else {
-		acpi_irq_not_handled++;
-		return IRQ_NONE;
 	}
+
+	acpi_irq_not_handled++;
+	return IRQ_NONE;
 }
 
 acpi_status
@@ -911,7 +908,6 @@ acpi_status acpi_os_read_port(acpi_io_address port, u32 *value, u32 width)
 
 	return AE_OK;
 }
-
 EXPORT_SYMBOL(acpi_os_read_port);
 
 acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width)
@@ -927,7 +923,6 @@ acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width)
 
 	return AE_OK;
 }
-
 EXPORT_SYMBOL(acpi_os_write_port);
 
 #ifdef readq
@@ -1362,7 +1357,7 @@ u32 acpi_os_get_line(char *buffer)
 	if (acpi_in_debugger) {
 		u32 chars;
 
-		kdb_read(buffer, sizeof(line_buf));
+		kdb_read(buffer, sizeof(DEBUGGER_LINE_BUFLEN));
 
 		/* remove the CR kdb includes */
 		chars = strlen(buffer) - 1;
@@ -1490,8 +1485,6 @@ static void __init set_osi_linux(unsigned int enable)
 		acpi_osi_setup("Linux");
 	else
 		acpi_osi_setup("!Linux");
-
-	return;
 }
 
 static void __init acpi_cmdline_osi_linux(unsigned int enable)
@@ -1499,8 +1492,6 @@ static void __init acpi_cmdline_osi_linux(unsigned int enable)
 	osi_linux.cmdline = 1;	/* cmdline set the default and override DMI */
 	osi_linux.dmi = 0;
 	set_osi_linux(enable);
-
-	return;
 }
 
 void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
@@ -1512,8 +1503,6 @@ void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
 
 	osi_linux.dmi = 1;	/* DMI knows that this box asks OSI(Linux) */
 	set_osi_linux(enable);
-
-	return;
 }
 
 /*
-- 
2.1.0