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    Subject[PATCH 5.15 304/846] power: reset: mt6397: Check for null res pointer
    Date
    From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

    [ Upstream commit 1c1348bf056dee665760a3bd1cd30b0be7554fc2 ]

    The return value of platform_get_resource() needs to be checked.
    To avoid use of error pointer in case that there is no suitable
    resource.

    Fixes: d28c74c10751 ("power: reset: add driver for mt6323 poweroff")
    Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
    Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/power/reset/mt6323-poweroff.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/power/reset/mt6323-poweroff.c b/drivers/power/reset/mt6323-poweroff.c
    index 0532803e6cbc4..d90e76fcb9383 100644
    --- a/drivers/power/reset/mt6323-poweroff.c
    +++ b/drivers/power/reset/mt6323-poweroff.c
    @@ -57,6 +57,9 @@ static int mt6323_pwrc_probe(struct platform_device *pdev)
    return -ENOMEM;

    res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
    + if (!res)
    + return -EINVAL;
    +
    pwrc->base = res->start;
    pwrc->regmap = mt6397_chip->regmap;
    pwrc->dev = &pdev->dev;
    --
    2.34.1


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