[U-Boot] [PATCH 05/18] compulab: eeprom: add support for defining eeprom i2c bus

[Marek Vasut <marex@denx.de>]

On Sunday, August 03, 2014 at 09:34:35 AM, Nikita Kiryanov wrote:
> Create CONFIG_SYS_I2C_EEPROM_BUS #define to tell the EEPROM
> module what I2C bus the EEPROM is located at. Make cl_eeprom_read()
> switch to that bus when reading EEPROM.
> 
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
> Cc: Tom Rini <trini@ti.com>
> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
> Acked-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
> ---
>  board/compulab/common/eeprom.c | 10 +++++++++-
>  include/configs/cm_t335.h      |  1 +
>  include/configs/cm_t35.h       |  1 +
>  include/configs/cm_t54.h       |  1 +
>  4 files changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/board/compulab/common/eeprom.c
> b/board/compulab/common/eeprom.c index 20fe3e1..b5c1c2a 100644
> --- a/board/compulab/common/eeprom.c
> +++ b/board/compulab/common/eeprom.c
> @@ -31,8 +31,16 @@ static int cl_eeprom_layout; /* Implicitly
> LAYOUT_INVALID */
> 
>  static int cl_eeprom_read(uint offset, uchar *buf, int len)
>  {
> -	return i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, offset,
> +	int res;
> +	unsigned int current_i2c_bus = i2c_get_bus_num();
> +
> +	i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);

Please handle the return value of this function too.
[...]
BR,MV