linux-kernel - [PATCH 01/28] c6x: use boot_command_line instead of private c6x_command

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Date:	Mon, 16 Sep 2013 18:08:57 -0500
From:	Rob Herring <robherring2@...il.com>
To:	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Mark Salter <msalter@...hat.com>,
	Aurelien Jacquiot <a-jacquiot@...com>,
	linux-c6x-dev@...ux-c6x.org
Subject: [PATCH 01/28] c6x: use boot_command_line instead of private c6x_command_line

From: Rob Herring <rob.herring@...xeda.com>

Save some pointless copying of the kernel command line and just use
boot_command_line instead.

Also remove default_command_line as it is not referenced anywhere, and
the DT code already handles the default command line.

Signed-off-by: Rob Herring <rob.herring@...xeda.com>
Cc: Mark Salter <msalter@...hat.com>
Cc: Aurelien Jacquiot <a-jacquiot@...com>
Cc: linux-c6x-dev@...ux-c6x.org
---
 arch/c6x/include/asm/setup.h |  2 --
 arch/c6x/kernel/devicetree.c |  2 +-
 arch/c6x/kernel/setup.c      | 11 +----------
 3 files changed, 2 insertions(+), 13 deletions(-)

diff --git a/arch/c6x/include/asm/setup.h b/arch/c6x/include/asm/setup.h
index ecead15..6968044 100644
--- a/arch/c6x/include/asm/setup.h
+++ b/arch/c6x/include/asm/setup.h
@@ -14,8 +14,6 @@
 #include <uapi/asm/setup.h>
 
 #ifndef __ASSEMBLY__
-extern char c6x_command_line[COMMAND_LINE_SIZE];
-
 extern int c6x_add_memory(phys_addr_t start, unsigned long size);
 
 extern unsigned long ram_start;
diff --git a/arch/c6x/kernel/devicetree.c b/arch/c6x/kernel/devicetree.c
index 9e15ab9..5e8c838 100644
--- a/arch/c6x/kernel/devicetree.c
+++ b/arch/c6x/kernel/devicetree.c
@@ -24,7 +24,7 @@ void __init early_init_devtree(void *params)
 	 * device-tree, including the platform type, initrd location and
 	 * size and more ...
 	 */
-	of_scan_flat_dt(early_init_dt_scan_chosen, c6x_command_line);
+	of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
 
 	/* Scan memory nodes and rebuild MEMBLOCKs */
 	of_scan_flat_dt(early_init_dt_scan_root, NULL);
diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c
index f4e72bd..0e5a812 100644
--- a/arch/c6x/kernel/setup.c
+++ b/arch/c6x/kernel/setup.c
@@ -68,13 +68,6 @@ unsigned long ram_end;
 static unsigned long dma_start __initdata;
 static unsigned long dma_size __initdata;
 
-char c6x_command_line[COMMAND_LINE_SIZE];
-
-#if defined(CONFIG_CMDLINE_BOOL)
-static const char default_command_line[COMMAND_LINE_SIZE] __section(.cmdline) =
-	CONFIG_CMDLINE;
-#endif
-
 struct cpuinfo_c6x {
 	const char *cpu_name;
 	const char *cpu_voltage;
@@ -296,8 +289,6 @@ notrace void __init machine_init(unsigned long dt_ptr)
 	/* Do some early initialization based on the flat device tree */
 	early_init_devtree(fdt);
 
-	/* parse_early_param needs a boot_command_line */
-	strlcpy(boot_command_line, c6x_command_line, COMMAND_LINE_SIZE);
 	parse_early_param();
 }
 
@@ -309,7 +300,7 @@ void __init setup_arch(char **cmdline_p)
 	printk(KERN_INFO "Initializing kernel\n");
 
 	/* Initialize command line */
-	*cmdline_p = c6x_command_line;
+	*cmdline_p = boot_command_line;
 
 	memory_end = ram_end;
 	memory_end &= ~(PAGE_SIZE - 1);
-- 
1.8.1.2

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