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

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Message-ID: <20110331211808.GD437@ponder.secretlab.ca>
Date:	Thu, 31 Mar 2011 15:18:08 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Peter Tyser <ptyser@...-inc.com>
Cc:	linux-kernel@...r.kernel.org, tomoya-linux@....okisemi.com
Subject: Re: [PATCH] gpio: ml_ioh_gpio: Fix output value of
 ioh_gpio_direction_output()

On Thu, Mar 24, 2011 at 06:17:14PM -0500, Peter Tyser wrote:
> 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.

Applied, thanks.

g.

> 
>  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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