linux-kernel - Re: [patch] net: make ndev->irq signed for error handling

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Message-ID: <20131108084136.GY26669@mwanda>
Date:	Fri, 8 Nov 2013 00:41:36 -0800 (PST)
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Mugunthan V N <mugunthanvnm@...com>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] net: make ndev->irq signed for error handling

On Thu, Nov 07, 2013 at 10:03:19PM +0530, Mugunthan V N wrote:
> On Thursday 07 November 2013 05:52 PM, Dan Carpenter wrote:
> > On Thu, Nov 07, 2013 at 05:44:38PM +0530, Mugunthan V N wrote:
> >> On Thursday 07 November 2013 01:18 PM, Dan Carpenter wrote:
> >>> There is a bug in cpsw_probe() where we do:
> >>>
> >>> 	ndev->irq = platform_get_irq(pdev, 0);
> >>> 	if (ndev->irq < 0) {
> >>>
> >>> The problem is that "ndev->irq" is unsigned so the error handling
> >>> doesn't work.  I have changed it to a regular int.
> >>>
> >>> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> >> ndev->irq is never used any where in the driver, I think its better to
> >> remove this part of code from probe. If every one is ok, I can send a
> >> patch to remove the code.
> > It seems like cpsw_ndo_poll_controller() uses it.
> >
> >
> 
> That can be changed to pass one of the interrupt numbers from priv as
> the irq number is not used in interrupt service routine.

I don't know anything about this driver, so I'm fine with your idea.

regards,
dan carpenter

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