linux-kernel - Re: [PATCH RFC] serial-core: reset the console speed on resume

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Date:	Sun, 30 Jan 2011 10:25:41 +0800
From:	Yin Kangkai <kangkai.yin@...ux.intel.com>
To:	Stanislav Brabec <sbrabec@...e.cz>
Cc:	linux-serial <linux-serial@...r.kernel.org>,
	Greg KH <greg@...ah.com>, Deepak Saxena <dsaxena@...top.org>,
	Jason Wang <jason77.wang@...il.com>,
	Daniel Drake <dsd@...top.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC] serial-core: reset the console speed on resume

On 2011-01-30, 01:20 +0100, Stanislav Brabec wrote:
> Yin Kangkai wrote on Tue 25 Jan 2011 at 18:43 +0800:
> 
> > On some platforms, we need to restore the console speed on resume even
> > it was not suspended (no_console_suspend), and on others we don't have
> > to do that.
> > 
> > So don't care about the "console_suspend_enabled" and unconditionally
> > reset the console speed if it is a console.
> 
> Well, there is currently another breakage on Zaurus. But it improves the
> situation.
> (Note: Your patch has bad file path. I'll agree with such change after
> this fix.)

OK, I was based on .37 stable kernel. Will base on linus tree and
resend the patch right away. Thanks.

> Test report on Zaurus
> (serial hardware itself is in undefined state after resume):
> 
>                                        before  after
> login:                                   OK     OK
> console:                               broken broken
> console + login:                         OK     OK
> console + no_console_suspend:          broken broken
> login + no_console_suspend:              OK     OK
> console + login + no_console_suspend:  broken   OK

Thanks for the test, Stanislav. Good to know it improves the
situation.

Regards,
Kangkai
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