linux-kernel - Re: [PATCH] tilegx: request_irq with a non-null device name

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Message-ID: <CAFXXi0kcGCqr-Ss5-Li9vXKCWyTh6Nvx+aAzVUZ1PZbZ=YZ2Pg@mail.gmail.com>
Date:	Tue, 13 Nov 2012 13:54:06 -0800
From:	Simon Marchi <simon.marchi@...ymtl.ca>
To:	Chris Metcalf <cmetcalf@...era.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tilegx: request_irq with a non-null device name

On Tue, Nov 13, 2012 at 1:37 PM, Chris Metcalf <cmetcalf@...era.com> wrote:
> On 11/13/2012 3:58 PM, Simon Marchi wrote:
>> This patch simply makes the tilegx net driver call request_irq with a
>> non-null name. It makes the output in /proc/interrupts more obvious, but
>> also helps tools that don't expect to find null there.
>>
>> Signed-off-by: Simon Marchi <simon.marchi@...ymtl.ca>
>> ---
>>  drivers/net/ethernet/tile/tilegx.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c
>> index 4e98100..66e025a 100644
>> --- a/drivers/net/ethernet/tile/tilegx.c
>> +++ b/drivers/net/ethernet/tile/tilegx.c
>> @@ -917,7 +917,7 @@ static int tile_net_setup_interrupts(struct net_device *dev)
>>       ingress_irq = rc;
>>       tile_irq_activate(ingress_irq, TILE_IRQ_PERCPU);
>>       rc = request_irq(ingress_irq, tile_net_handle_ingress_irq,
>> -                      0, NULL, NULL);
>> +                      0, "tile_net", NULL);
>
> Good catch.  If you can change it to dev->name instead of "tile_net", feel
> free to add my:

I thought about that first, but it wouldn't be very logical. This
module is loaded once and for all when the first network device is
brought up, so this request_irq is for all the tile network
interfaces. Suppose you "up" gbe0, "up" gbe1 and "down" gbe0, the
device name would still be gbe0, even though it's down. That's why I
opted for a generic name instead.

If you still want to go with dev->name I have no problem with that.

> Acked-by: Chris Metcalf <cmetcalf@...era.com>
>
> --
> Chris Metcalf, Tilera Corp.
> http://www.tilera.com
>
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