From: Linus Walleij <linus.walleij@linaro.org>
Date: Tue, 3 Jan 2017 08:18:58 +0000 (+0100)
Subject: pinctrl: amd: fix compilation warning
X-Git-Tag: v4.14-rc1~1472^2~76
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6ac4c1ad2eda7f0e8475c85b2647b4b6eabfcc7b;p=platform%2Fkernel%2Flinux-rpi.git

pinctrl: amd: fix compilation warning

3bfd44306c65 ("pinctrl: amd: Add support for additional GPIO")
created the following warning:

drivers/pinctrl/pinctrl-amd.c: In function 'amd_gpio_dbg_show':
drivers/pinctrl/pinctrl-amd.c:210:3: warning: 'pin_num' may be used uninitialized in this function [-Wmaybe-uninitialized]
   for (; i < pin_num; i++) {
   ^
drivers/pinctrl/pinctrl-amd.c:172:21: warning: 'i' may be used uninitialized in this function [-Wmaybe-uninitialized]
  unsigned int bank, i, pin_num;
                     ^
Fix this by adding a guarding default case for illegal
bank numbers.

Cc: S-k Shyam-sundar <Shyam-sundar.S-k@amd.com>
Cc: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index 47b1710..c220369 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -206,6 +206,9 @@ static void amd_gpio_dbg_show(struct seq_file *s, struct gpio_chip *gc)
 			i = 192;
 			pin_num = AMD_GPIO_PINS_BANK3 + i;
 			break;
+		default:
+			/* Illegal bank number, ignore */
+			continue;
 		}
 		for (; i < pin_num; i++) {
 			seq_printf(s, "pin%d\t", i);