linux-kernel - Re: [PATCH] genirq: fix incorrect proc spurious output

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Message-ID: <4CF5DC81.1080600@jp.fujitsu.com>
Date:	Wed, 01 Dec 2010 14:26:25 +0900
From:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
To:	Alexey Dobriyan <adobriyan@...il.com>,
	Yong Zhang <yong.zhang0@...il.com>
CC:	tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] genirq: fix incorrect proc spurious output

Thank you for reviewing, Yong, Alexey.
I'll resend the patch with cc:ing stable.

Regards,
Kenji Kaneshige


(2010/11/30 19:07), Alexey Dobriyan wrote:
> On Tue, Nov 30, 2010 at 05:08:13PM +0800, Yong Zhang wrote:
>> 2010/11/30 Kenji Kaneshige<kaneshige.kenji@...fujitsu.com>:
>>> Fix the problem that all the /proc/irq/XX/spurious files shows the IRQ
>>> 0 information.
>>>
>>> Current irq_spurious_proc_open() passes on NULL as the 3rd argument,
>>> which is used as an IRQ number in irq_spurious_proc_show(), to the
>>> single_open(). Because of this, all the /proc/irq/XX/spurious file
>>> shows IRQ 0 information regardless of the IRQ number.
>>>
>>> To fix the problem, irq_spurious_proc_open() must pass on the
>>> appropreate data (IRQ number) to single_open().
>>>
>>> Signed-off-by: Kenji Kaneshige<kaneshige.kenji@...fujitsu.com>
>>
>> Looks good.
>>
>> Reviewed-by: Yong Zhang<yong.zhang0@...il.com>
>>
>> BTW, it's introduced by a1afb6371bb5341057056194d1168753f6d77242
>> So should we Cc'ing stable?
> 
> Definitely.
> 
>>>   static int irq_spurious_proc_open(struct inode *inode, struct file *file)
>>>   {
>>> -       return single_open(file, irq_spurious_proc_show, NULL);
>>> +       return single_open(file, irq_spurious_proc_show, PDE(inode)->data);
>>>   }
> 
> 


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