X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=cmd%2Fgpio.c;h=408a942455b58627a81107f3145fe08e33fbeb9f;hb=ea02cfb6495eb5f54bf239405316746a19d303b2;hp=67eef83c951c73326e3a458c4417b51a70a1c172;hpb=4dbc107f4683e45749045b97f0b529d5eb5178a9;p=oweals%2Fu-boot.git

diff --git a/cmd/gpio.c b/cmd/gpio.c
index 67eef83c95..408a942455 100644
--- a/cmd/gpio.c
+++ b/cmd/gpio.c
@@ -10,7 +10,9 @@
 #include <command.h>
 #include <errno.h>
 #include <dm.h>
+#include <malloc.h>
 #include <asm/gpio.h>
+#include <linux/err.h>
 
 __weak int name_to_gpio(const char *name)
 {
@@ -246,7 +248,12 @@ static int do_gpio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	if (ret != -EBUSY)
 		gpio_free(gpio);
 
-	return CMD_RET_SUCCESS;
+	/*
+	 * Whilst wrong, the legacy gpio input command returns the pin
+	 * value, or CMD_RET_FAILURE (which is indistinguishable from a
+	 * valid pin value).
+	 */
+	return (sub_cmd == GPIOC_INPUT) ? value : CMD_RET_SUCCESS;
 
 err:
 	if (ret != -EBUSY)