@@ -24,6 +24,7 @@
#include <linux/debugfs.h>
#include <linux/serial_core.h>
#include <linux/sysfs.h>
+#include <linux/cmdline.h>
#include <asm/setup.h> /* for COMMAND_LINE_SIZE */
#include <asm/page.h>
@@ -1090,26 +1091,10 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
/* Retrieve command line */
p = of_get_flat_dt_prop(node, "bootargs", &l);
- if (p != NULL && l > 0)
- strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
+ if (l <= 0)
+ p = NULL;
- /*
- * CONFIG_CMDLINE is meant to be a default in case nothing else
- * managed to set the command line, unless CONFIG_CMDLINE_FORCE
- * is set in which case we override whatever was found earlier.
- */
-#ifdef CONFIG_CMDLINE
-#if defined(CONFIG_CMDLINE_EXTEND)
- strlcat(data, " ", COMMAND_LINE_SIZE);
- strlcat(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
-#elif defined(CONFIG_CMDLINE_FORCE)
- strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
-#else
- /* No arguments from boot loader, use kernel's cmdl*/
- if (!((char *)data)[0])
- strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
-#endif
-#endif /* CONFIG_CMDLINE */
+ cmdline_build(data, p, COMMAND_LINE_SIZE);
pr_debug("Command line is: %s\n", (char*)data);
@@ -10,7 +10,7 @@
* @src: The starting string or NULL if there isn't one. Must not equal dest.
* @length: the length of dest buffer.
*/
-static __always_inline void cmdline_build(char *dest, char *src, size_t length)
+static __always_inline void cmdline_build(char *dest, const char *src, size_t length)
{
if (length <= 0)
return;
This patch uses the new cmdline building function to concatenate the of provided cmdline with built-in parts based on compile-time options. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- drivers/of/fdt.c | 23 ++++------------------- include/linux/cmdline.h | 2 +- 2 files changed, 5 insertions(+), 20 deletions(-)