From: Kangjie Lu <kjlu@umn.edu>
To: kjlu@umn.edu
Cc: pakki001@umn.edu, Dmitry Torokhov <dmitry.torokhov@gmail.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] input: pm8xxx-vibrator: fix a potential NULL pointer dereference
Date: Fri, 8 Mar 2019 23:39:21 -0600 [thread overview]
Message-ID: <20190309053922.22212-1-kjlu@umn.edu> (raw)
In case of_device_get_match_data fails to find the matched data,
returns -ENODEV
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
drivers/input/misc/pm8xxx-vibrator.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/input/misc/pm8xxx-vibrator.c b/drivers/input/misc/pm8xxx-vibrator.c
index 7dd1c1fbe42a..740e59c11808 100644
--- a/drivers/input/misc/pm8xxx-vibrator.c
+++ b/drivers/input/misc/pm8xxx-vibrator.c
@@ -196,6 +196,8 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
vib->vib_input_dev = input_dev;
regs = of_device_get_match_data(&pdev->dev);
+ if (unlikely(!regs))
+ return -ENODEV;
/* operate in manual mode */
error = regmap_read(vib->regmap, regs->drv_addr, &val);
--
2.17.1
next reply other threads:[~2019-03-09 5:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-09 5:39 Kangjie Lu [this message]
2019-04-27 0:27 ` [PATCH] input: pm8xxx-vibrator: fix a potential NULL pointer dereference Dmitry Torokhov
2019-03-23 2:44 Kangjie Lu
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