linux-kernel - [PATCH 02/10] Input: omap4-keypad: Fix platform_get

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Message-Id: <1510946132-13554-3-git-send-email-arvind.yadav.cs@gmail.com>
Date:   Sat, 18 Nov 2017 00:45:24 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     dmitry.torokhov@...il.com, maxime.ripard@...e-electrons.com,
        wens@...e.org, linux@...ck-us.net, wsa@...-dreams.de,
        daniel.thompson@...aro.org, mcuos.com@...il.com
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 02/10] Input: omap4-keypad: Fix platform_get_irq's error checking

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/input/keyboard/omap4-keypad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c
index 940d38b..8a4b161 100644
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -251,7 +251,7 @@ static int omap4_keypad_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
+	if (irq < 0) {
 		dev_err(&pdev->dev, "no keyboard irq assigned\n");
 		return -EINVAL;
 	}
-- 
2.7.4