Re: [PATCH 1/1] driver:mtd:spi-nor: Add Micron quad I/O support

[Marek Vasut <marex@denx.de>]

On Friday, September 26, 2014 at 10:39:38 AM, bpqw wrote:
> >> +	/* set EVCR ,enable quad I/O */
> >> +	nor->cmd_buf[0] = val & ~EVCR_QUAD_EN_MICRON;
> >> +	ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1, 0);
> >> +	if (ret < 0) {
> >> +		dev_err(nor->dev,
> >> +			"error while writing EVCR register\n");
> >> +		return -EINVAL;
> >> +	}
> >> +
> >> +	if (wait_till_ready(nor))
> >> +		return 1;
> >
> >Why does this not return proper error code or even better, return value
> >from wait_till_ready() ?
> >
> >Other than that, there's nothing wrong with the patch I think.
> 
> Hi,Marek
> Thanks for your review,you can find the same usage in the spi-nor.c.
> Below method is OK? Or you can give me some suggestion.
> 
> if (wait_till_ready(nor))
> 	return - EINVAL;

ret = wait_till_readynor()
if (ret)
 return ret;

But all right, this means the subsystem isn't perfect. Well, others, what do you 
think ?

Best regards,
Marek Vasut