Re: [PATCH] i2c: suppress lockdep warning on delete_device

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On Fri, 17 May 2013, Alexander Sverdlin wrote:

> i2c: suppress lockdep warning on delete_device
> 
> Since commit 846f99749ab68bbc7f75c74fec305de675b1a1bf the following lockdep
> warning is thrown in case i2c device is removed (via delete_device sysfs
> attribute) which contains subdevices (e.g. i2c multiplexer):

Can you explain this in a little more detail?  Exactly what does the 
delete_device attribute do, when called for device D?

That is, what does a write to /sys/bus/i2c/devices/D/delete_device do?

Alan Stern

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