linux-kernel - Re: [PATCH v1 1/2] ata: libahci_platform: Get rid of dup message when IRQ can't be retrieved

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Date:   Thu, 9 Dec 2021 21:22:54 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Sergey Shtylyov <s.shtylyov@....ru>
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>
Subject: Re: [PATCH v1 1/2] ata: libahci_platform: Get rid of dup message
 when IRQ can't be retrieved

On Thu, Dec 09, 2021 at 09:22:32PM +0300, Sergey Shtylyov wrote:
> On 12/9/21 8:42 PM, Andy Shevchenko wrote:

...

> >>> No need to repeat this.
> >>>
> >>> While at it, drop redundant check for 0 as platform_get_irq() spills
> >>> out a big WARN() in such case.
> >>
> >>    And? IRQ0 is still returned! :-(
> > 
> > It should not be returned in the first place.
> 
>    But it still is, despite the WARN(), right?

So, you admit that there is a code which does that? That code should be fixed
first. Have you sent a patch?

...

> >>> -	if (!irq)
> >>> -		return -EINVAL;
> >>
> >>    This is prermature -- let's wait till my patch that stops returning IRQ0 from
> >> platform_get_irq() and friends gets merged....
> > 
> > What patch?
> 
>    https://marc.info/?l=linux-kernel&m=163623041902285
> 
> > Does it fix platform_get_irq_optional()?
> 
>    Of course! :-)

Can you share link to lore.kernel.org, please?
It will make much easier to try and comment.

-- 
With Best Regards,
Andy Shevchenko