From c05a953472695ba7ad8a898639ba6736cf6d019a Mon Sep 17 00:00:00 2001
From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Date: Fri, 7 Jul 2017 01:51:31 -0500
Subject: [PATCH 02/86] iio: adc: rockchip_saradc: add NULL check on
of_match_device() return value
Git-commit: 36d311bc1663f004529d2f870c1fc939d00c49f0
Patch-mainline: v4.14-rc1
References: fate#323912
Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.
In case of NULL print error message and return -ENODEV
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/iio/adc/rockchip_saradc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index ae6d3324f518..2bf2ed15a870 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -224,6 +224,11 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
info = iio_priv(indio_dev);
match = of_match_device(rockchip_saradc_match, &pdev->dev);
+ if (!match) {
+ dev_err(&pdev->dev, "failed to match device\n");
+ return -ENODEV;
+ }
+
info->data = match->data;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
--
2.11.0