linux-kernel - [PATCH 2/4] Input: omap4-keypad - Fix handling of platform_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200827072420.22848-2-krzk@kernel.org>
Date:   Thu, 27 Aug 2020 09:24:18 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        H Hartley Sweeten <hartleys@...ionengravers.com>,
        Sebastian Reichel <sre@...nel.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 2/4] Input: omap4-keypad - Fix handling of platform_get_irq() error

platform_get_irq() returns -ERRNO on error.  In such case comparison
to 0 would pass the check.

Fixes: f3a1ba60dbdb ("Input: omap4-keypad - use platform device helpers")
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/input/keyboard/omap4-keypad.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c
index 94c94d7f5155..b075f1af0305 100644
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -240,10 +240,8 @@ static int omap4_keypad_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
-		dev_err(&pdev->dev, "no keyboard irq assigned\n");
-		return -EINVAL;
-	}
+	if (irq < 0)
+		return -irq;
 
 	keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL);
 	if (!keypad_data) {
-- 
2.17.1