cmd: spi: Judge the number of added parameters

chenzhipeng · trini · commit c40e021b83d9 · 2023-01-12T11:25:17.000-05:00
When only sspi is entered, help information can be printed.

Signed-off-by: chenzhipeng &lt;chenzhipeng@eswincomputing.com&gt;
Reviewed-by: Simon Glass &lt;sjg@chromium.org&gt;
diff --git a/cmd/spi.c b/cmd/spi.c
@@ -112,6 +112,9 @@ int do_spi(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 
 	if ((flag & CMD_FLAG_REPEAT) == 0)
 	{
+		if (argc < 2)
+			return CMD_RET_USAGE;
+
 		if (argc >= 2) {
 			mode = CONFIG_DEFAULT_SPI_MODE;
 			bus = dectoul(argv[1], &cp);

Original file line number	Diff line number	Diff line change
`@@ -112,6 +112,9 @@ int do_spi(struct cmd_tbl cmdtp, int flag, int argc, char const argv[])`
`112`	`112`
`113`	`113`	`if ((flag & CMD_FLAG_REPEAT) == 0)`
`114`	`114`	`{`
	`115`	`+ if (argc < 2)`
	`116`	`+ return CMD_RET_USAGE;`
	`117`	`+`
`115`	`118`	`if (argc >= 2) {`
`116`	`119`	`mode = CONFIG_DEFAULT_SPI_MODE;`
`117`	`120`	`bus = dectoul(argv[1], &cp);`