[PATCH] input: pm8xxx-vibrator: fix a potential NULL pointer dereference

From: Kangjie Lu
Date: Fri Mar 22 2019 - 22:44:48 EST


In case of_device_get_match_data fails to find the matched data,
returns -ENODEV

Signed-off-by: Kangjie Lu <kjlu@xxxxxxx>
---
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