From 6bc0153d1a35ff1ea1bc1b10b9dfa119d1a04dc7 Mon Sep 17 00:00:00 2001
From: Leo C
Date: Thu, 23 Aug 2018 08:53:41 +0200
Subject: pwd/cd

---
 avr/cmd_fat.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

(limited to 'avr/cmd_fat.c')

diff --git a/avr/cmd_fat.c b/avr/cmd_fat.c
index c1d3770..d434cbd 100644
--- a/avr/cmd_fat.c
+++ b/avr/cmd_fat.c
@@ -135,12 +135,13 @@ command_ret_t do_pwd(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc
 	}
 
 	res = f_getcwd(buf, BUFFER_SIZE);  /* Get current directory path */
+	debug_fa("### f_getcwd():   buf: '%s', res: %d\n", buf, res);
 
-	if (!res) {
+	if (res == FR_OK) {
 		puts(buf);
 	}
 	free(buf);
-	if (res) {
+	if (res != FR_OK) {
 		put_rc(res);
 		return CMD_RET_FAILURE;
 	}
@@ -166,17 +167,18 @@ command_ret_t do_cd(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc,
 	} else
 		arg = argv[1];
 
-	if (arg[1] == ':')
+	if (strlen(arg) > 1 && arg[1] == ':') {
 		res = f_chdrive(arg);
-debug_fa("### f_chdrive(): arg: '%s', res: %d\n", arg, res);
-	if (res == FR_OK) {
+		debug_fa("### f_chdrive(): arg: '%s', res: %d\n", arg, res);
 		if (arg[2] == '\0') {
 			arg[0] = '/';
 			arg[1] = '\0';
 		}
+	}
+	if (res == FR_OK) {
 		res = f_chdir(arg);
+		debug_fa("### f_chdir():   arg: '%s', res: %d\n", arg, res);
 	}
-debug_fa("### f_chdir():   arg: '%s', res: %d\n", arg, res);
 	if (res != FR_OK) {
 		put_rc(res);
 		return CMD_RET_FAILURE;
-- 
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