linux-kernel - [PATCH 1/1] staging: nvec: check return value

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Message-Id: <1576648598-12257-1-git-send-email-wangxidong_97@163.com>
Date:   Wed, 18 Dec 2019 13:56:38 +0800
From:   Xidong Wang <wangxidong_97@....com>
To:     Xidong Wang <wangxidong_97@....com>,
        Marc Dietrich <marvin24@....de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     ac100@...ts.launchpad.net, linux-tegra@...r.kernel.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] staging: nvec: check return value

In nvec_kbd_probe(), the return value of devm_input_allocate_device()
should be checked before it is used.

Signed-off-by: Xidong Wang <wangxidong_97@....com>
---
 drivers/staging/nvec/nvec_kbd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/nvec/nvec_kbd.c b/drivers/staging/nvec/nvec_kbd.c
index 01dbb66..386d619 100644
--- a/drivers/staging/nvec/nvec_kbd.c
+++ b/drivers/staging/nvec/nvec_kbd.c
@@ -123,6 +123,8 @@ static int nvec_kbd_probe(struct platform_device *pdev)
 		keycodes[j++] = extcode_tab_us102[i];
 
 	idev = devm_input_allocate_device(&pdev->dev);
+	if (!idev)
+		return -ENOMEM;
 	idev->name = "nvec keyboard";
 	idev->phys = "nvec";
 	idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_LED);
-- 
2.7.4