On Fri, Oct 23, 2009 at 12:36:31AM +0200, Antonio Ospite wrote:

Hi,

I get this warning on shutdown. How to fix it properly?

FYI, in my setup pxa2xx_spi is the parent for pxamci, set using
this patch:
http://git.openezx.org/openezx.git?a=commitdiff;h=0ffd85ad8faea3456d4ecf5f63ae65aca26fff21

This sounds like it's the cause of the problem - from the backtrace, it
looks like SPI expects the children of the SPI device to be its own
responsibility to maintain.

Hence, because you've made pxamci a child of SPI, SPI is trying to
unregister and release the pxamci device.