Re: [PATCH] i2c: core: document preference for i2c_get_adapter_by_fwnode()

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On Thu, Jul 16, 2026 at 03:30:29PM +0200, Johan Hovold wrote:
> The i2c subsystem currently blocks during adapter deregistration
> whenever there are consumers holding a reference.
>=20
> Document that i2c_get_adapter_by_fwnode(), which also takes a module
> reference, should almost always be preferred over
> i2c_find_adapter_by_fwnode() so that an attempt to unload the adapter
> module while in use fails gracefully instead of blocking
> uninterruptibly.
>=20
> Note that by implication of_get_i2c_adapter_by_node() is also generally
> preferred over of_find_i2c_adapter_by_node().
>=20
> Signed-off-by: Johan Hovold <[email protected]>

Reviewed-by: Wolfram Sang <[email protected]>

Andi, I would suggest to apply it to for-current even, because this is
an important doc update,  but I'll leave it to you, of course.


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