linux-kernel - [PATCH] iio: adc: sun4i-gpadc: use of_device_get_match

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 20 Oct 2017 07:37:29 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        maxime.ripard@...e-electrons.com, wens@...e.org, pmeerw@...erw.net,
        quentin.schulz@...e-electrons.com
Cc:     linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Corentin Labbe <clabbe.montjoie@...il.com>
Subject: [PATCH] iio: adc: sun4i-gpadc: use of_device_get_match_data

The usage of of_device_get_match_data reduce the code size a bit.
Furthermore, it prevents an improbable dereference when
of_match_device() return NULL.

Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
---
 drivers/iio/adc/sun4i-gpadc-iio.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index c4e70f1cad79..04d7147e0110 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -501,17 +501,15 @@ static int sun4i_gpadc_probe_dt(struct platform_device *pdev,
 				struct iio_dev *indio_dev)
 {
 	struct sun4i_gpadc_iio *info = iio_priv(indio_dev);
-	const struct of_device_id *of_dev;
 	struct resource *mem;
 	void __iomem *base;
 	int ret;
 
-	of_dev = of_match_device(sun4i_gpadc_of_id, &pdev->dev);
-	if (!of_dev)
+	info->data = of_device_get_match_data(&pdev->dev);
+	if (!info->data)
 		return -ENODEV;
 
 	info->no_irq = true;
-	info->data = (struct gpadc_data *)of_dev->data;
 	indio_dev->num_channels = ARRAY_SIZE(sun8i_a33_gpadc_channels);
 	indio_dev->channels = sun8i_a33_gpadc_channels;
 
-- 
2.13.6