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    Subject[PATCH 4.9 24/61] regmap: dev_get_regmap_match(): fix string comparison
    Date
    From: Marc Kleine-Budde <mkl@pengutronix.de>

    [ Upstream commit e84861fec32dee8a2e62bbaa52cded6b05a2a456 ]

    This function is used by dev_get_regmap() to retrieve a regmap for the
    specified device. If the device has more than one regmap, the name parameter
    can be used to specify one.

    The code here uses a pointer comparison to check for equal strings. This
    however will probably always fail, as the regmap->name is allocated via
    kstrdup_const() from the regmap's config->name.

    Fix this by using strcmp() instead.

    Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
    Link: https://lore.kernel.org/r/20200703103315.267996-1-mkl@pengutronix.de
    Signed-off-by: Mark Brown <broonie@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/base/regmap/regmap.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
    index 1799a1dfa46ea..cd984b59a8a16 100644
    --- a/drivers/base/regmap/regmap.c
    +++ b/drivers/base/regmap/regmap.c
    @@ -1239,7 +1239,7 @@ static int dev_get_regmap_match(struct device *dev, void *res, void *data)

    /* If the user didn't specify a name match any */
    if (data)
    - return (*r)->name == data;
    + return !strcmp((*r)->name, data);
    else
    return 1;
    }
    --
    2.25.1


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