linux-kernel - [PATCH 5.15 134/139] pinctrl: fix loop in k210_pinconf_get

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Message-Id: <20220228172401.764917242@linuxfoundation.org>
Date:   Mon, 28 Feb 2022 18:25:08 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Sean Anderson <seanga2@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 5.15 134/139] pinctrl: fix loop in k210_pinconf_get_drive()

From: Dan Carpenter <dan.carpenter@...cle.com>

commit ba2ab85951c91a140a8fa51d8347d54e59ec009d upstream.

The loop exited too early so the k210_pinconf_drive_strength[0] array
element was never used.

Fixes: d4c34d09ab03 ("pinctrl: Add RISC-V Canaan Kendryte K210 FPIOA driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>
Reviewed-by: Sean Anderson <seanga2@...il.com>
Link: https://lore.kernel.org/r/20220209180804.GA18385@kili
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/pinctrl/pinctrl-k210.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pinctrl/pinctrl-k210.c
+++ b/drivers/pinctrl/pinctrl-k210.c
@@ -482,7 +482,7 @@ static int k210_pinconf_get_drive(unsign
 {
 	int i;
 
-	for (i = K210_PC_DRIVE_MAX; i; i--) {
+	for (i = K210_PC_DRIVE_MAX; i >= 0; i--) {
 		if (k210_pinconf_drive_strength[i] <= max_strength_ua)
 			return i;
 	}