Re: [PATCH v9 2/2] spi: loongson: add bus driver for the loongson spi controller

[andy.shevchenko@gmail.com]

Mon, May 15, 2023 at 04:14:00PM +0800, zhuyinbo kirjoitti:
> 在 2023/5/11 下午3:18, zhuyinbo 写道:
> > 在 2023/5/8 下午11:04, andy.shevchenko@gmail.com 写道:

...

> > > > +config SPI_LOONGSON_CORE
> > > > +    tristate "Loongson SPI Controller Core Driver Support"
> > > 
> > > Does it need to be visible to the user?
> 
> I try to set it invisible that by removing the SPI_LOONGSON_CORE Kconfig
> or removing "tristate "Loongson SPI Controller Core Driver Support" that
> will cause spi-core driver doesn't be compiled or compiled fail issue,
> so I will still set it visible to the user.

Making a symbol selectable only can be achieved by removing the description
(near to tristate directive), have you tried that?

...

> > > > +    res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > > > +    if (res == NULL) {
> > > 
> > > Why not using devm_platform_ioremap_resource()?
> > okay, I will use it.
> > > 
> > > > +        dev_err(dev, "cannot get io resource memory\n");
> > > > +        return -ENOENT;
> > > 
> > >     return dev_err_probe();
> 
> It seems that there is no need to print memory log when use
> devm_platform_ioremap_resource because this function had contained
> the this memory log print thus I will return PTR_ERR(reg_base).
> 
>         reg_base = devm_platform_ioremap_resource(pdev, 0);
>         if (IS_ERR(reg_base))
>                 return PTR_ERR(reg_base);

Good catch! Sure, go with this.

-- 
With Best Regards,
Andy Shevchenko