Re: [PATCH] Serial: BUGFIX: uart_resume_port has an omittedcondition.

From: Stanislav Brabec
Date: Thu Oct 14 2010 - 15:46:08 EST


Greg KH wrote:
> > This disparity appeared deliberately in 4547be78. If you need
> > no_console_suspend and the hardware lets the device in an undefined
> > state after resume (i. e. PXA270), you need to call subset of the
> > resume, even if the suspend counterpart was not called. Yes, I can
> > imagine that it may be a source of problems.

> > It seems that support for no_console_suspend for all devices is becoming
> > more complicated. I guess that a new driver calls (maybe "save_state"
> > and "resume_state") or support for no_console_suspend directly in
> > drivers may be useful.
>
> Ok, so I'm guessing that this patch is not to be applied then, correct?

I just compared it with Jason Wang's patches. MyungJoo Ham's patch is
exactly equal to the PATCH 1/2. So it already has my ACK and it is
pending as:

serial-core: skip call set_termios/console_start when no_console_suspend

Related thread can be found in linux-serial archives from August 2010:
[PATCH RESEND 0/2] two serial_core suspend/resume fixes

To MyungJoo Ham: Could you verify, that Jason Wang's patch 2/2 does not
break your system? My patch to fix PXA270 does not exist yet. I'll ask
you in future for testing.

--
Best Regards / S pozdravem,

Stanislav Brabec
software developer
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