Re: [PATCH] net: ethernet: davicom: fix devicetree irq resource

[Sergei Shtylyov]

On 02/04/2016 11:42 PM, Robert Jarzmik wrote:

> >     Your patch summary prefixes are too verbose, it was enough to say only
> > "dm9000: ".

   Or "davicom: dm9000: ". Missing the driver name itself doesn't look very 
consistent. :-)

> Well, I don't agree here. The subsystem should be fully specified, at least this
> is something I require in pxa, something that is also required in sound/*, etc
> ... If David doesn't object, I'll keep it that way. As it's his tree, his
> decision in the end, so let's have him decide.

   I expect that he disagrees with you. Let's wait...

> > > -	/* If there is no IRQ type specified, default to something that
> > > -	 * may work, and tell the user that this is a problem */
> > > -
> > > -	if (irqflags == IRQF_TRIGGER_NONE)
> > > -		irqflags = irq_get_trigger_type(dev->irq);
> > > -
> > > -	if (irqflags == IRQF_TRIGGER_NONE)
> > > +	/* If there is no IRQ type specified, tell the user that this is a
> > > +	 * problem */
> >
> >     The networking code formats comments this way:
> >
> > /* foo
> >   * bar
> >   */
> May I know where this is documented ?

   Documentation/CodingStyle, chapter 8. Have you run your patch thru 
scripts/checkpatch.pl?

> I'm asking because I didn't find it, because I parsed drivers/net/*.c files, and
> the standard kernel comment style was there, ie:
> /*
>   * foo
>   * bar
>   */

   But you didn't follow it as well?

> I was reusing the previous comment style,

   Ah...

> but I will change it for the standard
> kernel style if you wish.

   Yes, I think checkpatch.pl checks for that, --strict is forced for the 
networking code.


> > > +	ndev->irq = platform_get_irq(pdev, 0);
> > > +	if (ndev->irq <= 0) {
> >
> >     I don't recommend checking for 0 and returning early in this case --
> > you'll signal a probe success this way. Either ignore 0 or return -E<smth>
> > in this case. Unfortunately, platform_get_irq() is so sloppily coded now that it
> > *can* return 0 on error. :-(

   I'll try looking into this issue once I get more free time...

> Ah we had that discussion not very long ago, didn't we ? :)

   Yeah, I remembered that just after hitting <Send>. :-)

> And I think I'll reuse the "if (ndev->irq < 0) {" solution to be consistent with
> myself.

> Thanks for the review.

   My pleasure. :-)

MBR, Sergei