diff options
| author |   Yang Yingliang <yangyingliang@huawei.com> | 2022-05-05 20:50:43 +0800 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2022-05-19 12:05:48 +0200 |
| commit | d3b43eb505bffb8e4cdf6800c15660c001553fe6 (patch) | |
| tree | 255ab1ff29940c40a29ca1edfecea26e94d299b0 /drivers/rtc | |
| parent | rtc: rzn1: fix platform_no_drv_owner.cocci warning (diff) | |
| download | linux-dev-d3b43eb505bffb8e4cdf6800c15660c001553fe6.tar.xz linux-dev-d3b43eb505bffb8e4cdf6800c15660c001553fe6.zip | |
rtc: mt6397: check return value after calling platform_get_resource()
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Fixes: fc2979118f3f ("rtc: mediatek: Add MT6397 RTC driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220505125043.1594771-1-yangyingliang@huawei.com
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-mt6397.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c index 80dc479a6ff0..1d297af80f87 100644 --- a/drivers/rtc/rtc-mt6397.c +++ b/drivers/rtc/rtc-mt6397.c @@ -269,6 +269,8 @@ static int mtk_rtc_probe(struct platform_device *pdev) return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; rtc->addr_base = res->start; rtc->data = of_device_get_match_data(&pdev->dev); |