linux-kernel - [PATCH] gpio: sifive: Add missing check for platform_get

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Message-Id: <20230601082440.30110-1-jiasheng@iscas.ac.cn>
Date:   Thu,  1 Jun 2023 16:24:40 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     linus.walleij@...aro.org, brgl@...ev.pl, palmer@...belt.com,
        paul.walmsley@...ive.com
Cc:     linux-gpio@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH] gpio: sifive: Add missing check for platform_get_irq

Add missing check for platform_get_irq and return error
if it fails.

Fixes: f52d6d8b43e5 ("gpio: sifive: To get gpio irq offset from device tree data")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
 drivers/gpio/gpio-sifive.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
index 98939cd4a71e..7bca9c415564 100644
--- a/drivers/gpio/gpio-sifive.c
+++ b/drivers/gpio/gpio-sifive.c
@@ -221,8 +221,11 @@ static int sifive_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	for (i = 0; i < ngpio; i++)
+	for (i = 0; i < ngpio; i++) {
 		chip->irq_number[i] = platform_get_irq(pdev, i);
+		if (chip->irq_number[i] < 0)
+			return -ENODEV;
+	}
 
 	ret = bgpio_init(&chip->gc, dev, 4,
 			 chip->base + SIFIVE_GPIO_INPUT_VAL,
-- 
2.25.1