linux-kernel - Re: [PATCH] PCAP touchscreen driver (for 2.6.32)

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Date:	Sun, 28 Jun 2009 14:45:16 -0300
From:	Daniel Ribeiro <drwyrm@...il.com>
To:	Antonio Ospite <ospite@...denti.unina.it>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org,
	openezx-devel <openezx-devel@...ts.openezx.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Harald Welte <laforge@...monks.org>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH] PCAP touchscreen driver (for 2.6.32)

Em Dom, 2009-06-28 às 16:35 +0200, Antonio Ospite escreveu:
> > +	pcap_ts->pcap = platform_get_drvdata(pdev);
> > +	platform_set_drvdata(pdev, pcap_ts);
> > +
> > +	input_dev = input_allocate_device();
> > +	if (!pcap_ts || !input_dev)
> 
> Can pcap_ts be ever NULL here? This test can be simplified.

Right, it really can't be NULL. I will fix it.

> > +#ifdef CONFIG_PM
> > +static int pcap_ts_suspend(struct platform_device *pdev, pm_message_t state)
> > +{
> > +	struct pcap_ts *pcap_ts = platform_get_drvdata(pdev);
> > +
> > +	pcap_set_ts_bits(pcap_ts->pcap, PCAP_ADC_TS_REF_LOWPWR);
> > +	return 0;
> > +}
> > +
> > +static int pcap_ts_resume(struct platform_device *pdev)
> > +{
> > +	struct pcap_ts *pcap_ts = platform_get_drvdata(pdev);
> > +
> > +	pcap_set_ts_bits(pcap_ts->pcap,
> > +				pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT);
> > +	return 0;
> > +}
> > +#endif
> > +
> 
> define the suspend/resume callbacks as NULL in a #else here and remove
> the #ifdef CONFIG_PM below? That seems to be the most used style.
> 
> > +static struct platform_driver pcap_ts_driver = {
> > +	.probe		= pcap_ts_probe,
> > +	.remove		= __devexit_p(pcap_ts_remove),
> > +#ifdef CONFIG_PM
> > +	.suspend	= pcap_ts_suspend,
> > +	.resume		= pcap_ts_resume,
> > +#endif
> > +	.driver		= {
> > +		.name	= "pcap-ts",
> > +		.owner	= THIS_MODULE,
> > +	},
> > +};

Ok.

Thanks for the review! :)

-- 
Daniel Ribeiro

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