linux-kernel - [PATCH 3.12 037/212] i2c: mux: gpio: use gpio_set_value

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Date:	Mon,  2 Dec 2013 11:13:48 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Ionut Nicu <ioan.nicu.ext@....com>,
	Peter Korsgaard <peter.korsgaard@...co.com>,
	Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH 3.12 037/212] i2c: mux: gpio: use gpio_set_value_cansleep()

3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ionut Nicu <ioan.nicu.ext@....com>

commit 250ad590d6f12d93f4d85be305b0a598d609232e upstream.

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

Signed-off-by: Ionut Nicu <ioan.nicu.ext@....com>
Acked-by: Peter Korsgaard <peter.korsgaard@...co.com>
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/i2c/muxes/i2c-mux-gpio.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -30,8 +30,8 @@ static void i2c_mux_gpio_set(const struc
 	int i;
 
 	for (i = 0; i < mux->data.n_gpios; i++)
-		gpio_set_value(mux->gpio_base + mux->data.gpios[i],
-			       val & (1 << i));
+		gpio_set_value_cansleep(mux->gpio_base + mux->data.gpios[i],
+					val & (1 << i));
 }
 
 static int i2c_mux_gpio_select(struct i2c_adapter *adap, void *data, u32 chan)


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