i2c: at91: fixup return type of wait_for_completion_timeout

Return type of wait_for_completion_timeout is unsigned long not int. This
patch adds a timeout variable of appropriate type and fixes up the assignment.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
---

Patch was only compile tested with at91_dt_defconfig
(implies CONFIG_I2C_AT91=y)

Patch is against 3.19.0-rc7 (localversion-next is -next-20150204)

 drivers/i2c/busses/i2c-at91.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

On Sun, Feb 08, 2015 at 11:12:07AM -0500, Nicholas Mc Guire wrote:
> Return type of wait_for_completion_timeout is unsigned long not int. This
> patch adds a timeout variable of appropriate type and fixes up the assignment.
> 
> Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>

Thanks

> ---
> 
> Patch was only compile tested with at91_dt_defconfig
> (implies CONFIG_I2C_AT91=y)
> 
> Patch is against 3.19.0-rc7 (localversion-next is -next-20150204)
> 
>  drivers/i2c/busses/i2c-at91.c |    7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
> index 636fd2e..79c6404 100644
> --- a/drivers/i2c/busses/i2c-at91.c
> +++ b/drivers/i2c/busses/i2c-at91.c
> @@ -381,6 +381,7 @@ static irqreturn_t atmel_twi_interrupt(int irq, void *dev_id)
>  static int at91_do_twi_transfer(struct at91_twi_dev *dev)
>  {
>  	int ret;
> +	unsigned long timeout;
>  	bool has_unre_flag = dev->pdata->has_unre_flag;
>  
>  	dev_dbg(dev->dev, "transfer: %s %d bytes.\n",
> @@ -436,9 +437,9 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
>  		}
>  	}
>  
> -	ret = wait_for_completion_timeout(&dev->cmd_complete,
> -					     dev->adapter.timeout);
> -	if (ret == 0) {
> +	timeout = wait_for_completion_timeout(&dev->cmd_complete,
> +					      dev->adapter.timeout);
> +	if (timeout == 0) {
>  		dev_err(dev->dev, "controller timed out\n");
>  		at91_init_twi_bus(dev);
>  		ret = -ETIMEDOUT;
> -- 
> 1.7.10.4
> 
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On Sun, Feb 08, 2015 at 11:12:07AM -0500, Nicholas Mc Guire wrote:
> Return type of wait_for_completion_timeout is unsigned long not int. This
> patch adds a timeout variable of appropriate type and fixes up the assignment.
> 
> Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>

Fixed variable name to 'time_left' and applied to for-next, thanks!