[v2,2/7] drivers: of: use cmdline building function
diff mbox series

Message ID 3b4291271ce4af4941a771e5af5cbba3c8fa1b2a.1614705851.git.christophe.leroy@csgroup.eu
State New, archived
Headers show
Series
  • Improve boot command line handling
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Commit Message

Christophe Leroy March 2, 2021, 5:25 p.m. UTC
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@csgroup.eu>
---
 drivers/of/fdt.c | 23 ++++-------------------
 1 file changed, 4 insertions(+), 19 deletions(-)

Patch
diff mbox series

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index dcc1dd96911a..cf2b95b8f298 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -25,6 +25,7 @@ 
 #include <linux/serial_core.h>
 #include <linux/sysfs.h>
 #include <linux/random.h>
+#include <linux/cmdline.h>
 
 #include <asm/setup.h>  /* for COMMAND_LINE_SIZE */
 #include <asm/page.h>
@@ -1050,26 +1051,10 @@  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(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);