Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Arvind Yadav <arvind.yadav.cs@gmail.com>
To:     lee.jones@linaro.org, maxime.ripard@free-electrons.com,
        wens@csie.org
Cc:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] mfd: sun4i-gpadc: Handle return value of platform_get_irq
Date:   Sat, 18 Nov 2017 12:06:33 +0530
Message-Id: <1510986993-4936-4-git-send-email-arvind.yadav.cs@gmail.com>
In-Reply-To: <1510986993-4936-1-git-send-email-arvind.yadav.cs@gmail.com>
References: <1510986993-4936-1-git-send-email-arvind.yadav.cs@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

platform_get_irq() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/mfd/sun4i-gpadc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/sun4i-gpadc.c b/drivers/mfd/sun4i-gpadc.c
index 9cfc881..1c89235 100644
--- a/drivers/mfd/sun4i-gpadc.c
+++ b/drivers/mfd/sun4i-gpadc.c
@@ -100,8 +100,8 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
 	struct resource *mem;
 	const struct of_device_id *of_id;
 	const struct mfd_cell *cells;
-	unsigned int irq, size;
-	int ret;
+	unsigned int size;
+	int ret, irq;
 
 	of_id = of_match_node(sun4i_gpadc_of_match, pdev->dev.of_node);
 	if (!of_id)
@@ -148,6 +148,9 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
 	regmap_write(dev->regmap, SUN4I_GPADC_INT_FIFOC, 0);
 
 	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
 	ret = devm_regmap_add_irq_chip(&pdev->dev, dev->regmap, irq,
 				       IRQF_ONESHOT, 0,
 				       &sun4i_gpadc_regmap_irq_chip,
-- 
2.7.4


From 1584822969620042592@xxx Thu Nov 23 02:42:42 +0000 2017
X-GM-THRID: 1584822969620042592
X-Gmail-Labels: Inbox,Category Forums,HistoricalUnread