Re: Regression in next with spi return from transfer_one()

[Tony Lindgren <tony@atomide.com>]

* Mark Brown <broonie@kernel.org> [181116 00:02]:
> On Thu, Nov 15, 2018 at 03:44:00PM -0800, Tony Lindgren wrote:
> 
> > It seems to be caused because of the now missing "if (ret > 0) {"
> > line somehow that was there earlier. New code sets ms to 200 it
> > seems, then dmesg shows:
> 
> Doh, of course :(  Sorry I missed that.
> 
> > The old code is not updating ms and it's set to 1.
> 
> Right, and not waiting either which should be the issue.  Does the
> following work:

And it's recalculating the timeout every time now too :) Yup that
fix works and the problem makes sense now:

Tested-by: Tony Lindgren <tony@atomide.com>

> diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> index 498d3b9bf3ae..430ad637c643 100644
> --- a/drivers/spi/spi.c
> +++ b/drivers/spi/spi.c
> @@ -1114,9 +1114,11 @@ static int spi_transfer_one_message(struct spi_controller *ctlr,
>  				goto out;
>  			}
>  
> -			ret = spi_transfer_wait(ctlr, msg, xfer);
> -			if (ret < 0)
> -				msg->status = ret;
> +			if (ret > 0) {
> +				ret = spi_transfer_wait(ctlr, msg, xfer);
> +				if (ret < 0)
> +					msg->status = ret;
> +			}
>  		} else {
>  			if (xfer->len)
>  				dev_err(&msg->spi->dev,