From: Marek Vasut <marex@denx.de>
Date: Sat, 13 Nov 2021 02:26:39 +0000 (+0100)
Subject: ARM: stm32: Fix SoM and board coding strap GPIO handling on DHSOM
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=525dd34535005ecde1cde7235c4d1d7329617248;p=u-boot.git

ARM: stm32: Fix SoM and board coding strap GPIO handling on DHSOM

The variables retaining the strap values have to be initialized, always,
make it so. Moreover, free the requested GPIO list at the end to avoid
wasting memory.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
---

diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c
index a8402e2457..f44afb01e2 100644
--- a/board/dhelectronics/dh_stm32mp1/board.c
+++ b/board/dhelectronics/dh_stm32mp1/board.c
@@ -212,34 +212,40 @@ static void board_get_coding_straps(void)
 	ofnode node;
 	int i, ret;
 
+	brdcode = 0;
+	ddr3code = 0;
+	somcode = 0;
+
 	node = ofnode_path("/config");
 	if (!ofnode_valid(node)) {
 		printf("%s: no /config node?\n", __func__);
 		return;
 	}
 
-	brdcode = 0;
-	ddr3code = 0;
-	somcode = 0;
-
 	ret = gpio_request_list_by_name_nodev(node, "dh,som-coding-gpios",
 					      gpio, ARRAY_SIZE(gpio),
 					      GPIOD_IS_IN);
 	for (i = 0; i < ret; i++)
 		somcode |= !!dm_gpio_get_value(&(gpio[i])) << i;
 
+	gpio_free_list_nodev(gpio, ret);
+
 	ret = gpio_request_list_by_name_nodev(node, "dh,ddr3-coding-gpios",
 					      gpio, ARRAY_SIZE(gpio),
 					      GPIOD_IS_IN);
 	for (i = 0; i < ret; i++)
 		ddr3code |= !!dm_gpio_get_value(&(gpio[i])) << i;
 
+	gpio_free_list_nodev(gpio, ret);
+
 	ret = gpio_request_list_by_name_nodev(node, "dh,board-coding-gpios",
 					      gpio, ARRAY_SIZE(gpio),
 					      GPIOD_IS_IN);
 	for (i = 0; i < ret; i++)
 		brdcode |= !!dm_gpio_get_value(&(gpio[i])) << i;
 
+	gpio_free_list_nodev(gpio, ret);
+
 	printf("Code:  SoM:rev=%d,ddr3=%d Board:rev=%d\n",
 		somcode, ddr3code, brdcode);
 }