linux-kernel - Re: [PATCH v2] input: add driver support for Sharp gp2ap002a00f proximity sensor

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 16 Nov 2011 16:56:25 +0100
From:	<oskar.andero@...yericsson.com>
To:	anish kumar <anish198519851985@...il.com>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"jic23@....ac.uk" <jic23@....ac.uk>,
	"aghayal@...eaurora.org" <aghayal@...eaurora.org>,
	"Cavin, Courtney" <Courtney.Cavin@...yericsson.com>
Subject: Re: [PATCH v2] input: add driver support for Sharp gp2ap002a00f
 proximity sensor

> > > > +#ifdef CONFIG_PM_SLEEP
> > > > +static int gp2a_suspend(struct device *dev)
> > > > +{
> > > > +	struct i2c_client *client = to_i2c_client(dev);
> > > > +	struct gp2a_data *dt = i2c_get_clientdata(client);
> > > > +	int error;
> > > > +
> > > > +	if (device_may_wakeup(&client->dev)) {
> > > > +		enable_irq_wake(client->irq);
> > > > +	} else {
> > > 
> > > This needs locking WRT open/close. Please acquire dt->device->mutex and
> > > only disable if dt->device->users != 0. Similar shoudl be done for
> > > resume.
> > 
> > I see what you mean. I will fix it. 
> Is my understanding correct?You are going to disable the device 
> only when there are users of the driver and not disable the device
> otherwise.As anyway if there are no users the driver would have been
> already disabled right?

Please, see PATCH v3 for the answer to your question.

-Oskar
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/