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platform/surface: aggregator: move to_ssam_device() to use container_of_const()

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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.

Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230111113018.459199-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-01-11 12:30:05 +01:00
parent fa838c8ce5
commit 34be683add
1 changed files with 1 additions and 4 deletions
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5
include/linux/surface_aggregator/device.h
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@ -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