linux-kernel - [PATCH] gpio: ml_ioh_gpio: Fix output value of ioh_gpio_direction

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Date:	Thu, 24 Mar 2011 18:17:14 -0500
From:	Peter Tyser <ptyser@...-inc.com>
To:	linux-kernel@...r.kernel.org
Cc:	Peter Tyser <ptyser@...-inc.com>, tomoya-linux@....okisemi.com,
	Grant Likely <grant.likely@...retlab.ca>
Subject: [PATCH] gpio: ml_ioh_gpio: Fix output value of ioh_gpio_direction_output()

The ioh_gpio_direction_output() function was missing a write to set the
desired output value.  The function would properly set the GPIO
direction, but not the output value.  The value would have to manually
be set with a follow up call to ioh_gpio_set().

Add the missing write so that ioh_gpio_direction_output() sets both the
GPIO direction and value.

Signed-off-by: Peter Tyser <ptyser@...-inc.com>
Cc: tomoya-linux@....okisemi.com
Cc: Grant Likely <grant.likely@...retlab.ca>
---
This is untested - just noticed it while working on an unrelated change.  An
ack or tested-by from someone with real hardware would be appreciated.

 drivers/gpio/ml_ioh_gpio.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpio/ml_ioh_gpio.c b/drivers/gpio/ml_ioh_gpio.c
index cead8e6..7a0423c 100644
--- a/drivers/gpio/ml_ioh_gpio.c
+++ b/drivers/gpio/ml_ioh_gpio.c
@@ -116,6 +116,7 @@ static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
 		reg_val |= (1 << nr);
 	else
 		reg_val &= ~(1 << nr);
+	iowrite32(reg_val, &chip->reg->regs[chip->ch].po);
 
 	mutex_unlock(&chip->lock);
 
-- 
1.7.0.4

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