Re: [PATCH net-next v1 4/4] net: phy: add Applied Micro QT2025 PHY driver

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Apr 18, 2024 at 10:00:47PM +0900, FUJITA Tomonori wrote:
> >> +            if i == 0x4000 {
> > 
> > What does 0x4000 mean here?
> > 
> >> +                a = MDIO_MMD_PHYXS;
> >> +                j = 0x8000;
> > 
> > What does 0x8000 mean here?
> > 
> >> +            }
> >> +            dev.c45_write(a, j, (*val).into())?;
> >> +
> >> +            j += 1;
> >> +        }
> >> +        dev.c45_write(MDIO_MMD_PCS, 0xe854, 0x0040)?;
> > 
> > Lots of magic values in this driver, is that intentional?
> 
> The original driver uses lots of magic values. I simply use them. As
> Andrew wrote, we could infer some. I'll try to comment these.

Wait, this is a rewrite of an existing driver in the tree into Rust?
Why is that happening again?  Why not a new one instead?

thanks,

greg k-h