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mfd: core: Make platform_data pointer const in struct mfd_cell

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The content of the platform_data of a struct mfd_cell is simply passed on
to the platform_device_add_data() call in mfd_add_device() .

platform_device_add_data() already handles the data behind that pointer
as const and also uses kmemdup to create a copy of the data before
handing that copy over to the newly created platform-device,
so there is no reason to not extend this to struct mfd_cell, as the old
copy in the mfd_cell will be stale anyway.

This allows to pass structs gathered from of_device_get_match_data()
as platform-data to sub-devices - which is retrieved as const already.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20241107114712.538976-3-heiko@sntech.de
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Heiko Stuebner
2024-11-07 12:47:05 +01:00
committed by Lee Jones
parent 8a5b38c3fd
commit fa52c04dae
1 changed files with 1 additions and 1 deletions
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2
include/linux/mfd/core.h
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@@ -72,7 +72,7 @@ struct mfd_cell {
int (*resume)(struct platform_device *dev);
/* platform data passed to the sub devices drivers */
void *platform_data;
const void *platform_data;
size_t pdata_size;
/* Matches ACPI */