linux-kernel - Re: [PATCH 1/3 V2] mfd: add STMPE811 core support

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Message-ID: <20100614120410.GA12027@pengutronix.de>
Date:	Mon, 14 Jun 2010 14:04:10 +0200
From:	Luotao Fu <l.fu@...gutronix.de>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Luotao Fu <l.fu@...gutronix.de>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3 V2] mfd: add STMPE811 core support

Hi Mark,

thanks for the review.

On Mon, Jun 14, 2010 at 12:50:32PM +0100, Mark Brown wrote:
> On Mon, Jun 14, 2010 at 12:32:36PM +0200, Luotao Fu wrote:
> 
> > +static void stmpe811_mask_work(struct work_struct *work)
> > +{
> > +	struct stmpe811 *stm = container_of(work, struct stmpe811, mask_work);
> > +
> > +	stmpe811_reg_write(stm, STMPE811_REG_INT_EN, stm->int_en_mask);
> > +
> > +	mutex_unlock(&stm->irq_mask_lock);
> > +}
> 
> Why are you doing this in a workqueue?  You shouldn't need to do this -
> you should implement the bus_lock() and bus_unlock() callbacks instead.

Right, will replace the stuff with bus_lock/unlock

> 
> > +	ret = request_threaded_irq(client->irq, NULL, stmpe811_irq,
> > +				   pdata->irq_flags, "stmpe811", stm);
> > +	if (ret) {
> > +		dev_err(&client->dev, "failed to request IRQ: %d\n", ret);
> > +		goto err_free;
> > +	}
> 
> I suspect you should be unconditionally putting IRQF_ONESHOT here since
> the threaded IRQ requires it.

oh, oversaw this one, will fix.

Thanks

regards
Luotao Fu

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