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From: Peter Korsgaard <peter.korsgaard-ob4gmnvZ1/cAvxtiuMwx3w@public.gmane.org>
To: Ionut Nicu <ioan.nicu.ext-OYasijW0DpE@public.gmane.org>
Cc: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>,
	Alexander Sverdlin
	<alexander.sverdlin-OYasijW0DpE@public.gmane.org>,
	linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 1/2] i2c-mux-gpio: use gpio_set_value_cansleep()
Date: Fri, 11 Oct 2013 13:21:19 +0200	[thread overview]
Message-ID: <87wqlkgij4.fsf@thor.barco.com> (raw)
In-Reply-To: <5257CE71.5060408-OYasijW0DpE@public.gmane.org> (Ionut Nicu's message of "Fri, 11 Oct 2013 12:09:53 +0200")

>>>>> "IN" == Ionut Nicu <ioan.nicu.ext-OYasijW0DpE@public.gmane.org> writes:

IN> Some gpio chips may have get/set operations that
IN> can sleep. gpio_set_value() only works for chips
IN> which do not sleep, for the others we will get a
IN> kernel warning. Using gpio_set_value_cansleep()
IN> will work for both chips that do sleep and those
IN> who don't.

IN> Signed-off-by: Ionut Nicu <ioan.nicu.ext-OYasijW0DpE@public.gmane.org>
IN> ---
IN>  drivers/i2c/muxes/i2c-mux-gpio.c |    4 ++--
IN>  1 files changed, 2 insertions(+), 2 deletions(-)

IN> diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
IN> index a764da7..550e094 100644
IN> --- a/drivers/i2c/muxes/i2c-mux-gpio.c
IN> +++ b/drivers/i2c/muxes/i2c-mux-gpio.c
IN> @@ -30,8 +30,8 @@ static void i2c_mux_gpio_set(const struct gpiomux *mux, unsigned val)
IN>     int i;

IN>     for (i = 0; i < mux->data.n_gpios; i++)
IN> -           gpio_set_value(mux->gpio_base + mux->data.gpios[i],
IN> -                          val & (1 << i));
IN> +           gpio_set_value_cansleep(mux->gpio_base + mux->data.gpios[i],
IN> +                           val & (1 << i));

The indentation of the 2nd line seems wrong (should match
mux->gpio_base), otherwise it looks good:

Acked-by: Peter Korsgaard <peter.korsgaard-ob4gmnvZ1/cAvxtiuMwx3w@public.gmane.org>

--
Sorry about disclaimer - It's out of my control.
Bye, Peter Korsgaard
This message is subject to the following terms and conditions: MAIL DISCLAIMER<http://www.barco.com/en/maildisclaimer>

WARNING: multiple messages have this Message-ID (diff)
From: Peter Korsgaard <peter.korsgaard@barco.com>
To: Ionut Nicu <ioan.nicu.ext@nsn.com>
Cc: Wolfram Sang <wsa@the-dreams.de>,
	Alexander Sverdlin <alexander.sverdlin@nsn.com>,
	<linux-i2c@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] i2c-mux-gpio: use gpio_set_value_cansleep()
Date: Fri, 11 Oct 2013 13:21:19 +0200	[thread overview]
Message-ID: <87wqlkgij4.fsf@thor.barco.com> (raw)
In-Reply-To: <5257CE71.5060408@nsn.com> (Ionut Nicu's message of "Fri, 11 Oct 2013 12:09:53 +0200")

>>>>> "IN" == Ionut Nicu <ioan.nicu.ext@nsn.com> writes:

IN> Some gpio chips may have get/set operations that
IN> can sleep. gpio_set_value() only works for chips
IN> which do not sleep, for the others we will get a
IN> kernel warning. Using gpio_set_value_cansleep()
IN> will work for both chips that do sleep and those
IN> who don't.

IN> Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
IN> ---
IN>  drivers/i2c/muxes/i2c-mux-gpio.c |    4 ++--
IN>  1 files changed, 2 insertions(+), 2 deletions(-)

IN> diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
IN> index a764da7..550e094 100644
IN> --- a/drivers/i2c/muxes/i2c-mux-gpio.c
IN> +++ b/drivers/i2c/muxes/i2c-mux-gpio.c
IN> @@ -30,8 +30,8 @@ static void i2c_mux_gpio_set(const struct gpiomux *mux, unsigned val)
IN>     int i;

IN>     for (i = 0; i < mux->data.n_gpios; i++)
IN> -           gpio_set_value(mux->gpio_base + mux->data.gpios[i],
IN> -                          val & (1 << i));
IN> +           gpio_set_value_cansleep(mux->gpio_base + mux->data.gpios[i],
IN> +                           val & (1 << i));

The indentation of the 2nd line seems wrong (should match
mux->gpio_base), otherwise it looks good:

Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>

--
Sorry about disclaimer - It's out of my control.
Bye, Peter Korsgaard
This message is subject to the following terms and conditions: MAIL DISCLAIMER<http://www.barco.com/en/maildisclaimer>

  parent reply	other threads:[~2013-10-11 11:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-11 10:09 [PATCH 1/2] i2c-mux-gpio: use gpio_set_value_cansleep() Ionut Nicu
     [not found] ` <5257CE71.5060408-OYasijW0DpE@public.gmane.org>
2013-10-11 11:21   ` Peter Korsgaard [this message]
2013-10-11 11:21     ` Peter Korsgaard
  -- strict thread matches above, loose matches on Subject: below --
2013-10-11 12:17 Ionut Nicu
2013-10-11 12:17 ` Ionut Nicu
2013-10-30 16:28 ` Wolfram Sang

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