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SubjectRe: [PATCH 25/69] TTY: con3215, remove tasklet for tty_wakeup
On Tue, Apr 03, 2012 at 09:59:19AM +0200, Jiri Slaby wrote:
> On 04/03/2012 07:42 AM, Heiko Carstens wrote:
> > On Mon, Apr 02, 2012 at 01:54:09PM +0200, Jiri Slaby wrote:
> >> tty_wakeup is safe to be called from all contexts. No need to schedule
> >> a tasklet for that. Let us call it directly like in other drivers.
> >>
> >> And delete the tasklet completely.
> >
> > Your patch actually reverts Martin's recent commit 656d912537
> > "[S390] 3215 deadlock with tty_wakeup".
> > I'm quite sure the reason for the deadlock still exists.
> > Unfortunately the commit doesn't contain the call chain that
> > led to fix.
>
> Ok, I would really appreciate the trace.
>
> If this is really an issue, we should provide a helper in the TTY layer
> like tty_schedule_wakeup.

Jiri, should I not apply this patch?

thanks,

greg k-h


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