pinctrl: pistachio: fix use of irq_of_parse_and_map()

The irq_of_parse_and_map() function returns 0 on failure, and does not
return an negative value.

Fixes: cefc03e5995e ("pinctrl: Add Pistachio SoC pin control driver")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Link: https://lore.kernel.org/r/20220424031430.3170759-1-lv.ruyi@zte.com.cn
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c
index 8d271c6..5de691c 100644 (file)
--- a/drivers/pinctrl/pinctrl-pistachio.c
+++ b/drivers/pinctrl/pinctrl-pistachio.c
@@ -1374,10 +1374,10 @@ static int pistachio_gpio_register(struct pistachio_pinctrl *pctl)
                }
 
                irq = irq_of_parse_and_map(child, 0);
-               if (irq < 0) {
-                       dev_err(pctl->dev, "No IRQ for bank %u: %d\n", i, irq);
+               if (!irq) {
+                       dev_err(pctl->dev, "No IRQ for bank %u\n", i);
                        of_node_put(child);
-                       ret = irq;
+                       ret = -EINVAL;
                        goto err;
                }