General help message cleanup

Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>

1 files changed, 5 insertions, 5 deletions

diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index ac9e5cfc3..2186205a1 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -569,7 +569,7 @@ int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	saveenv, 1, 0,	do_saveenv,
 	"save environment variables to persistent storage",
-	NULL
+	""
 );
 
 #endif
@@ -602,7 +602,7 @@ U_BOOT_CMD(
 	"print environment variables",
 	"\n    - print values of all environment variables\n"
 	"printenv name ...\n"
-	"    - print value of environment variable 'name'\n"
+	"    - print value of environment variable 'name'"
 );
 
 U_BOOT_CMD(
@@ -611,7 +611,7 @@ U_BOOT_CMD(
 	"name value ...\n"
 	"    - set environment variable 'name' to 'value ...'\n"
 	"setenv name\n"
-	"    - delete environment variable 'name'\n"
+	"    - delete environment variable 'name'"
 );
 
 #if defined(CONFIG_CMD_ASKENV)
@@ -627,7 +627,7 @@ U_BOOT_CMD(
 	"    - get environment variable 'name' from stdin (max 'size' chars)\n"
 	"askenv name [message] size\n"
 	"    - display 'message' string and get environment variable 'name'"
-	"from stdin (max 'size' chars)\n"
+	"from stdin (max 'size' chars)"
 );
 #endif
 
@@ -637,6 +637,6 @@ U_BOOT_CMD(
 	run,	CONFIG_SYS_MAXARGS,	1,	do_run,
 	"run commands in an environment variable",
 	"var [...]\n"
-	"    - run the commands in the environment variable(s) 'var'\n"
+	"    - run the commands in the environment variable(s) 'var'"
 );
 #endif