linux-kernel - Re: [PATCH v9 2/2] sst: internal speaker needs setting a GPIO line

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Message-ID: <20110328025313.GF12596@qtel.sh.intel.com>
Date:	Mon, 28 Mar 2011 10:53:13 +0800
From:	Lu Guanqun <guanqun.lu@...el.com>
To:	Arjan van de Ven <arjan@...ux.intel.com>,
	Jeff Cheng <jeff_cheng@...tron.com>
Cc:	"meego-kernel@...ts.meego.com" <meego-kernel@...ts.meego.com>,
	"alan@...ux.intel.com" <alan@...ux.intel.com>,
	"Wu, Fengguang" <fengguang.wu@...el.com>,
	"Tang, Feng" <feng.tang@...el.com>,
	"Fu, Michael" <michael.fu@...el.com>,
	"Wang, Xingchao" <xingchao.wang@...el.com>,
	"Koul, Vinod" <vinod.koul@...el.com>,
	"Kp, Jeeja" <jeeja.kp@...el.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	"Babu, Ramesh" <ramesh.babu@...el.com>,
	"R, Dharageswari" <dharageswari.r@...el.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v9 2/2] sst: internal speaker needs setting a GPIO line

On Mon, Mar 28, 2011 at 10:35:36AM +0800, Arjan van de Ven wrote:
> On 3/27/2011 7:29 PM, Lu Guanqun wrote:
> >
> >   	pr_debug("sst: powering dn nc_power_down ....\n");
> >
> > +	if (snd_pmic_ops_nc.output_dev_id == MONO_EARPIECE ||
> > +	    snd_pmic_ops_nc.output_dev_id == INTERNAL_SPKR) {
> > +		msleep(30);
> > +		nc_set_amp_power(0);
> > +	}
> >   	msleep(30);
> 
> this double msleep sounds rather harsh... why do we need two of these ?
> (heck... why do we need ONE ?)
> 

This is legacy code from Jeff Cheng's patch.
Jeff, could you provide some information on this line?

-- 
guanqun
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