cmd: simplify do_spi_flash()

CMD_RET_USAGE == -1. The special handling of this value at the end of
do_spi_flash() does not make any sense.

To avoid future confusion use the CMD_RET_* constants and simplify the
code.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

diff --git a/cmd/sf.c b/cmd/sf.c
index 272521b..20a2e79 100644 (file)
--- a/cmd/sf.c
+++ b/cmd/sf.c
@@ -579,21 +579,19 @@ static int do_spi_flash(struct cmd_tbl *cmdtp, int flag, int argc,
 
        /* need at least two arguments */
        if (argc < 2)
-               goto usage;
+               return CMD_RET_USAGE;
 
        cmd = argv[1];
        --argc;
        ++argv;
 
-       if (strcmp(cmd, "probe") == 0) {
-               ret = do_spi_flash_probe(argc, argv);
-               goto done;
-       }
+       if (strcmp(cmd, "probe") == 0)
+               return do_spi_flash_probe(argc, argv);
 
        /* The remaining commands require a selected device */
        if (!flash) {
                puts("No SPI flash selected. Please run `sf probe'\n");
-               return 1;
+               return CMD_RET_FAILURE;
        }
 
        if (strcmp(cmd, "read") == 0 || strcmp(cmd, "write") == 0 ||
@@ -606,14 +604,9 @@ static int do_spi_flash(struct cmd_tbl *cmdtp, int flag, int argc,
        else if (IS_ENABLED(CONFIG_CMD_SF_TEST) && !strcmp(cmd, "test"))
                ret = do_spi_flash_test(argc, argv);
        else
-               ret = -1;
-
-done:
-       if (ret != -1)
-               return ret;
+               ret = CMD_RET_USAGE;
 
-usage:
-       return CMD_RET_USAGE;
+       return ret;
 }
 
 #ifdef CONFIG_SYS_LONGHELP