linux-kernel - Re: [PATCH] ata: Don't use NO_IRQ in pata_of

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Date:	Thu, 10 Nov 2011 15:34:30 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Anton Vorontsov <cbouatmailru@...il.com>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>, Ingo Molnar <mingo@...e.hu>,
	Jeff Garzik <jgarzik@...hat.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Randy Dunlap <rdunlap@...otime.net>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	devicetree-discuss@...ts.ozlabs.org
Subject: Re: [PATCH] ata: Don't use NO_IRQ in pata_of_platform driver

On 11/10/2011 11:28 AM, Anton Vorontsov wrote:
> Drivers should not use NO_IRQ; moreover, some architectures don't
> have it nowadays. '0' is the 'no irq' case.
>
> Signed-off-by: Anton Vorontsov<cbouatmailru@...il.com>
> Acked-by: Alan Cox<alan@...ux.intel.com>
> ---
>
> On Thu, Nov 10, 2011 at 03:38:16PM +0000, Alan Cox wrote:
>> On Thu, 10 Nov 2011 19:26:06 +0400
>> Anton Vorontsov<cbouatmailru@...il.com>  wrote:
>>
>>> Drivers should not use NO_IRQ; moreover, some architectures don't
>>> have it nowadays. '0' is the 'no irq' case.
>>>
>>> Signed-off-by: Anton Vorontsov<cbouatmailru@...il.com>
>>
>> Acked-by: Alan Cox<alan@...ux.intel.com>
>
> In case if we don't want a "band-aid fix" for 3.2, here is the patch
> that just does the proper fix (w/ a risk to break minor architectures).
>
>   drivers/ata/pata_of_platform.c |    2 +-
>   1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/ata/pata_of_platform.c b/drivers/ata/pata_of_platform.c
> index a72ab0d..2a472c5 100644
> --- a/drivers/ata/pata_of_platform.c
> +++ b/drivers/ata/pata_of_platform.c
> @@ -52,7 +52,7 @@ static int __devinit pata_of_platform_probe(struct platform_device *ofdev)
>   	}
>
>   	ret = of_irq_to_resource(dn, 0,&irq_res);
> -	if (ret == NO_IRQ)
> +	if (!ret)
>   		irq_res.start = irq_res.end = 0;
>   	else
>   		irq_res.flags = 0;

Unless someone screams, that is what I'll push upstream.

	Jeff


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