command: Use a constant pointer for the help

This text should never change during execution, so it makes sense to
use a const char * so that it can be declared as const in the code.
Update struct cmd_tbl with a const char * pointer for 'help'.

We cannot make usage const because of the bmode command, used on mx53ppd
for example.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/include/command.h b/include/command.h
index 137cfbc3231f1a0eee0ddabcb4269499d9c9af17..f8e07a591c658b48bbe57843005c0f60bf5c51d6 100644 (file)
--- a/include/command.h
+++ b/include/command.h
@@ -45,7 +45,7 @@ struct cmd_tbl {
                               char *const argv[]);
        char            *usage;         /* Usage message        (short) */
 #ifdef CONFIG_SYS_LONGHELP
-       char            *help;          /* Help  message        (long)  */
+       const char      *help;          /* Help  message        (long)  */
 #endif
 #ifdef CONFIG_AUTO_COMPLETE
        /* do auto completion on the arguments */