From: Damien Le Moal <damien.lemoal@wdc.com>
Date: Sat, 7 Nov 2020 08:13:57 +0000 (+0900)
Subject: gpio: sifive: Fix SiFive gpio probe
X-Git-Tag: iomap-folio-5.17-old~2727^2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b72de3ff19fdc4bbe4d4bb3f4483c7e46e00bac3;p=users%2Fwilly%2Flinux.git

gpio: sifive: Fix SiFive gpio probe

Fix the check on the number of IRQs to allow up to the maximum (32)
instead of only the maximum minus one.

Fixes: 96868dce644d ("gpio/sifive: Add GPIO driver for SiFive SoCs")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Link: https://lore.kernel.org/r/20201107081420.60325-10-damien.lemoal@wdc.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
index c54dd08f2cbf..d5eb9ca11901 100644
--- a/drivers/gpio/gpio-sifive.c
+++ b/drivers/gpio/gpio-sifive.c
@@ -183,7 +183,7 @@ static int sifive_gpio_probe(struct platform_device *pdev)
 		return PTR_ERR(chip->regs);
 
 	ngpio = of_irq_count(node);
-	if (ngpio >= SIFIVE_GPIO_MAX) {
+	if (ngpio > SIFIVE_GPIO_MAX) {
 		dev_err(dev, "Too many GPIO interrupts (max=%d)\n",
 			SIFIVE_GPIO_MAX);
 		return -ENXIO;