[U-Boot] [PATCH 2/4] i2c: i2c-cdns: Reorder timeout loop for interrupt waiting

[Michal Simek]

On 27.12.2016 23:46, Moritz Fischer wrote:
> Reorder the timeout loop such that we first check if the
> condition is already true, and then call udelay() so if
> the condition is already true, break early.
> 
> Signed-off-by: Moritz Fischer <moritz.fischer at ettus.com>
> Cc: Heiko Schocher <hs at denx.de>
> Cc: Michal Simek <michal.simek at xilinx.com>
> Cc: u-boot at lists.denx.de
> ---
>  drivers/i2c/i2c-cdns.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/i2c-cdns.c b/drivers/i2c/i2c-cdns.c
> index c69e7e8..9a1b520 100644
> --- a/drivers/i2c/i2c-cdns.c
> +++ b/drivers/i2c/i2c-cdns.c
> @@ -130,10 +130,10 @@ static u32 cdns_i2c_wait(struct cdns_i2c_regs *cdns_i2c, u32 mask)
>  	int timeout, int_status;
>  
>  	for (timeout = 0; timeout < 100; timeout++) {
> -		udelay(100);
>  		int_status = readl(&cdns_i2c->interrupt_status);
>  		if (int_status & mask)
>  			break;
> +		udelay(100);
>  	}
>  
>  	/* Clear interrupt status flags */
> 

Reviewed-by: Michal Simek <michal.simek at xilinx.com>

Thanks,
Michal