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    Subject[PATCH v2 03/16] platform/surface: aggregator: move to_ssam_device() to use container_of_const()
    Date
    The driver core is changing to pass some pointers as const, so move
    to_ssam_device() to use container_of_const() to handle this change.
    to_ssam_device() now properly keeps the const-ness of the pointer passed
    into it, while as before it could be lost.

    Cc: Maximilian Luz <luzmaximilian@gmail.com>
    Cc: platform-driver-x86@vger.kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    include/linux/surface_aggregator/device.h | 5 +----
    1 file changed, 1 insertion(+), 4 deletions(-)

    diff --git a/include/linux/surface_aggregator/device.h b/include/linux/surface_aggregator/device.h
    index 46c45d1b6368..24151a0e2c96 100644
    --- a/include/linux/surface_aggregator/device.h
    +++ b/include/linux/surface_aggregator/device.h
    @@ -229,10 +229,7 @@ static inline bool is_ssam_device(struct device *d)
    * Return: Returns a pointer to the &struct ssam_device wrapping the given
    * device @d.
    */
    -static inline struct ssam_device *to_ssam_device(struct device *d)
    -{
    - return container_of(d, struct ssam_device, dev);
    -}
    +#define to_ssam_device(d) container_of_const(d, struct ssam_device, dev)

    /**
    * to_ssam_device_driver() - Casts the given device driver to a SSAM client
    --
    2.39.0
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