X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=cmd%2Ffat.c;h=03de5d11afb453e271fee21e7f00ce03c453fa18;hb=458e8d8071f2db7addbfe1fa67951a95c05d28b6;hp=4e207462d93e9a1301d32b2a379e29149251a351;hpb=e6de55ec5bf306df3b3cc8e7a4cc17fa1e78ca6c;p=u-boot

diff --git a/cmd/fat.c b/cmd/fat.c
index 4e207462d9..03de5d11af 100644
--- a/cmd/fat.c
+++ b/cmd/fat.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2002
  * Richard Jones, rjones@nexus-tech.net
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
@@ -126,7 +125,7 @@ static int do_fat_fswrite(cmd_tbl_t *cmdtp, int flag,
 		return 1;
 	}
 	addr = simple_strtoul(argv[3], NULL, 16);
-	count = simple_strtoul(argv[5], NULL, 16);
+	count = (argc <= 5) ? 0 : simple_strtoul(argv[5], NULL, 16);
 
 	buf = map_sysmem(addr, count);
 	ret = file_fat_write(argv[4], buf, 0, count, &size);
@@ -145,7 +144,7 @@ static int do_fat_fswrite(cmd_tbl_t *cmdtp, int flag,
 U_BOOT_CMD(
 	fatwrite,	6,	0,	do_fat_fswrite,
 	"write file into a dos filesystem",
-	"<interface> <dev[:part]> <addr> <filename> <bytes>\n"
+	"<interface> <dev[:part]> <addr> <filename> [<bytes>]\n"
 	"    - write file 'filename' from the address 'addr' in RAM\n"
 	"      to 'dev' on 'interface'"
 );