Subject: [PATCH 1/5] i2c: mv64xxx: put offload check into offload prepare function

From: [email-masked] (Gregory CLEMENT)
Date: Fri, 14 Feb 2014 12:38:19 +0100

On 13/02/2014 21:36, Wolfram Sang wrote:
> It makes code simpler to read and prepares a reorganization needed for a
> bugfix.
> 
> Signed-off-by: Wolfram Sang <[email-masked]>

Tested-by: Gregory CLEMENT <[email-masked]>

As expected it didn't fix the issue I had, but it didn't introduce
any visible regression too.

> ---
>  drivers/i2c/busses/i2c-mv64xxx.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
> index b8c5187..ba64978 100644
> --- a/drivers/i2c/busses/i2c-mv64xxx.c
> +++ b/drivers/i2c/busses/i2c-mv64xxx.c
> @@ -204,6 +204,9 @@ static int mv64xxx_i2c_offload_msg(struct mv64xxx_i2c_data *drv_data)
>  	unsigned long ctrl_reg;
>  	struct i2c_msg *msg = drv_data->msgs;
>  
> +	if (!drv_data->offload_enabled)
> +		return -EOPNOTSUPP;
> +
>  	drv_data->msg = msg;
>  	drv_data->byte_posn = 0;
>  	drv_data->bytes_left = msg->len;
> @@ -433,8 +436,7 @@ mv64xxx_i2c_do_action(struct mv64xxx_i2c_data *drv_data)
>  
>  		drv_data->msgs++;
>  		drv_data->num_msgs--;
> -		if (!(drv_data->offload_enabled &&
> -				mv64xxx_i2c_offload_msg(drv_data))) {
> +		if (mv64xxx_i2c_offload_msg(drv_data) < 0) {
>  			drv_data->cntl_bits |= MV64XXX_I2C_REG_CONTROL_START;
>  			writel(drv_data->cntl_bits,
>  			drv_data->reg_base + drv_data->reg_offsets.control);
> 

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com