From: Rabin Vincent <rabin.vincent@stericsson.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Philippe LANGLAIS <philippe.langlais@stericsson.com>,
"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
STEricsson_nomadik_linux <STEricsson_nomadik_linux@list.st.com>,
Trilok Soni <tsoni@codeaurora.org>
Subject: Re: [PATCH] input: replace request_irq by request_any_context_irq in keyboard GPIO driver
Date: Thu, 20 Jan 2011 14:53:30 +0530 [thread overview]
Message-ID: <20110120092330.GA1316@bnru05.bnr.st.com> (raw)
In-Reply-To: <20110120075348.GE30522@core.coreip.homeip.net>
On Thu, Jan 20, 2011 at 08:53:48 +0100, Dmitry Torokhov wrote:
> On Wed, Jan 12, 2011 at 10:41:32AM +0100, Philippe Langlais wrote:
> > diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
> > index 6069abe..eb30063 100644
> > --- a/drivers/input/keyboard/gpio_keys.c
> > +++ b/drivers/input/keyboard/gpio_keys.c
> > @@ -322,7 +322,7 @@ static void gpio_keys_report_event(struct gpio_button_data *bdata)
> > struct gpio_keys_button *button = bdata->button;
> > struct input_dev *input = bdata->input;
> > unsigned int type = button->type ?: EV_KEY;
> > - int state = (gpio_get_value(button->gpio) ? 1 : 0) ^ button->active_low;
> > + int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;
> >
> > input_event(input, type, button->code, !!state);
> > input_sync(input);
> > @@ -410,8 +410,8 @@ static int __devinit gpio_keys_setup_key(struct platform_device *pdev,
> > if (!button->can_disable)
> > irqflags |= IRQF_SHARED;
> >
> > - error = request_irq(irq, gpio_keys_isr, irqflags, desc, bdata);
> > - if (error) {
> > + error = request_any_context_irq(irq, gpio_keys_isr, irqflags, desc, bdata);
> > + if (error < 0) {
>
> No, this it not correct. request_any_context_irq() means that you could
> either get a hardirq or a treaded one. However above you are changing to
> gpio_get_value_cansleep() which indicates that you can sleep.
Note that gpio_get_value_cansleep() is not being called from the interrupt
handler (threaded or not), but from a work queue.
Rabin
next prev parent reply other threads:[~2011-01-20 9:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-12 9:41 Changes in keyboard GPIO driver Philippe Langlais
2011-01-12 9:41 ` [PATCH] input: replace request_irq by request_any_context_irq " Philippe Langlais
2011-01-20 7:53 ` Dmitry Torokhov
2011-01-20 8:00 ` Trilok Soni
2011-01-20 8:13 ` Dmitry Torokhov
2011-01-20 8:56 ` Trilok Soni
2011-01-20 9:23 ` Rabin Vincent [this message]
2011-01-20 10:04 ` Dmitry Torokhov
2011-01-20 12:14 ` Philippe Langlais
2011-01-21 7:10 ` Dmitry Torokhov
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