Re: [PATCH] tpm: don't destroy chip device prematurely
From: Jarkko Sakkinen
Date: Sun Oct 02 2016 - 06:25:35 EST
On Sun, Oct 02, 2016 at 01:17:55PM +0300, Jarkko Sakkinen wrote:
> On Sun, Oct 02, 2016 at 10:39:31AM +0300, Tomas Winkler wrote:
> > In tpm_del_char_device device_del is called
> > prior to tpm2_shutdown where it is still used.
> > Fortunately, so far chip->dev was used only for printouts
> > int tpm2_shutdown flow, hence system didn't crash. But with
> > the introduction of runtime power management it will result in
> > shutting down the parent device while it still in use.
> > Fixes: 20e0152393b41 ("tpm: fix crash in tpm_tis deinitialization")
> > Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
> Tested-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>