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Date: Fri, 8 Mar 2019 23:39:21 -0600 From: Kangjie Lu <kjlu@....edu> To: kjlu@....edu Cc: pakki001@....edu, Dmitry Torokhov <dmitry.torokhov@...il.com>, linux-input@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] input: pm8xxx-vibrator: fix a potential NULL pointer dereference In case of_device_get_match_data fails to find the matched data, returns -ENODEV Signed-off-by: Kangjie Lu <kjlu@....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
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