[PATCH] ARM:boot: support the command with COMMAND_LINE_SIZE - 1 useful chars

[gang.chen@asianux.com (Chen Gang)]

  originally, not support the command with COMMAND_LINE_SIZE - 1 useful chars.
  but in fact, we can support it:

Signed-off-by: Chen Gang <gang.chen@asianux.com>
---
 arch/arm/boot/compressed/atags_to_fdt.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
index aabc02a..ed23ec2 100644
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -63,7 +63,7 @@ static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
 	/* copy the fdt command line into the buffer */
 	fdt_bootargs = getprop(fdt, "/chosen", "bootargs", &len);
 	if (fdt_bootargs)
-		if (len < COMMAND_LINE_SIZE) {
+		if (len <= COMMAND_LINE_SIZE) {
 			memcpy(ptr, fdt_bootargs, len);
 			/* len is the length of the string
 			 * including the NULL terminator */
@@ -73,7 +73,7 @@ static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
 	/* and append the ATAG_CMDLINE */
 	if (fdt_cmdline) {
 		len = strlen(fdt_cmdline);
-		if (ptr - cmdline + len + 2 < COMMAND_LINE_SIZE) {
+		if (ptr - cmdline + len + 2 <= COMMAND_LINE_SIZE) {
 			*ptr++ = ' ';
 			memcpy(ptr, fdt_cmdline, len);
 			ptr += len;
-- 
1.7.10.4