From 85fe6415c146d5d42ce300c12f1ecf4d4af47d40 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Thu, 14 Oct 2021 14:33:42 +0200
Subject: [PATCH] gpio: xgs-iproc: fix parsing of ngpios property
Git-commit: 85fe6415c146d5d42ce300c12f1ecf4d4af47d40
Patch-mainline: v5.15
References: git-fixes stable-5.14.16
of_property_read_u32 returns 0 on success, not true, so we need to
invert the check to actually take over the provided ngpio value.
Fixes: 6a41b6c5fc20 ("gpio: Add xgs-iproc driver")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpio/gpio-xgs-iproc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-xgs-iproc.c b/drivers/gpio/gpio-xgs-iproc.c
index fa9b4d8c3ff5..43ca52fa6f9a 100644
--- a/drivers/gpio/gpio-xgs-iproc.c
+++ b/drivers/gpio/gpio-xgs-iproc.c
@@ -224,7 +224,7 @@ static int iproc_gpio_probe(struct platform_device *pdev)
}
chip->gc.label = dev_name(dev);
- if (of_property_read_u32(dn, "ngpios", &num_gpios))
+ if (!of_property_read_u32(dn, "ngpios", &num_gpios))
chip->gc.ngpio = num_gpios;
irq = platform_get_irq(pdev, 0);
--
2.26.2