pinctrl/TB10x: Fix signedness bug

In the TB10x pin database, a port index of -1 is used to indicate
unmuxed GPIO pin groups. This bug fixes a 'cast to unsigned' bug of
this value.

Thanks to Dan Carpenter for highlighting this.

CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/pinctrl/pinctrl-tb10x.c b/drivers/pinctrl/pinctrl-tb10x.c
index c5e0f6973a3b..26ca6855f478 100644
--- a/drivers/pinctrl/pinctrl-tb10x.c
+++ b/drivers/pinctrl/pinctrl-tb10x.c
@@ -629,9 +629,8 @@ static int tb10x_gpio_request_enable(struct pinctrl_dev *pctl,
          */
         for (i = 0; i < state->pinfuncgrpcnt; i++) {
                 const struct tb10x_pinfuncgrp *pfg = &state->pingroups[i];
-                unsigned int port = pfg->port;
                 unsigned int mode = pfg->mode;
-                int j;
+                int j, port = pfg->port;
 
                 /*
                  * Skip pin groups which are always mapped and don't need