[PATCH 5.9 221/255] gpio: sifive: Fix SiFive gpio probe

Greg Kroah-Hartman
2020-11-17T13:42:23Z

From: Damien Le Moal <damien.lemoal@wdc.com>

commit b72de3ff19fdc4bbe4d4bb3f4483c7e46e00bac3 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpio/gpio-sifive.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpio/gpio-sifive.c
+++ b/drivers/gpio/gpio-sifive.c
@@ -183,7 +183,7 @@ static int sifive_gpio_probe(struct plat
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;