Re: Odd hang on suspend and shutdown

On Sun, Jul 05, 2015 at 04:20:02PM -0700, Linus Torvalds wrote:

On my Sony VAIO Pro 11 laptop, commit c93b76b34b4d ("mei: bus: report
also uuid in module alias") seems to cause problems at suspend and
shutdown.

In particular, reverting just the oneliner to drivers/nfc/pn544/mei.c
seems to fix things for me. The bisection was a pain, because it took
me forever to realize that it was that one-liner that caused it: I had
initially undone that one line simply because it didn't compile with
it in place (complaints about MEI_NFC_UUID not being constant). So I
continued to bisect with the fix unintentionally in place.

So just removing the MEI_NFC_UUID entry from the pn544_mei_tbl[] array
initialization makes things work for me again.

I suppose you were not seeing this issue on e.g. a 4.1 kernel (assuming
this is not a brand new laptop) ?
If that's the case, is any of the pn544* kernel modules loaded when
running on top of a good kernel ?

Cheers,
Samuel.