From: Anton Vorontsov <avorontsov@ru•mvista.com>
To: Jeff Garzik <jgarzik@pobox•com>
Cc: linux-ide@vger•kernel.org, linuxppc-dev@ozlabs•org,
Li Yang <leoli@freescale•com>, Wang Jian <lark@linux•net.cn>
Subject: [PATCH] pata_of_platform: fix no irq handling
Date: Mon, 29 Sep 2008 17:32:36 +0400 [thread overview]
Message-ID: <20080929133236.GA19675@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <48E05742.1030609@pobox.com>
When no irq specified the pata_of_platform fills the irq_res with -1,
which is wrong to do for two reasons:
1. By definition, 'no irq' should be IRQ 0, not some negative integer;
2. pata_platform checks for irq_res.start > 0, but since irq_res.start
is unsigned type, the check will be true for `-1'.
Reported-by: Steven A. Falco <sfalco@harris•com>
Signed-off-by: Anton Vorontsov <avorontsov@ru•mvista.com>
---
On Mon, Sep 29, 2008 at 12:19:14AM -0400, Jeff Garzik wrote:
> Anton Vorontsov wrote:
>> On Thu, Sep 25, 2008 at 06:40:59PM +0800, Li Yang wrote:
>>> On Thu, Sep 25, 2008 at 4:54 PM, Wang Jian <lark@linux•net.cn> wrote:
>>>> The alternative fix can be.
>>> This one is better as 0 is defined as 'invalid irq' for all
>>> architectures. Added linux-ide and Anton to cc.
>>
>> Thanks for the correct Cc.
>>
>> I've sent a patch to fix the issue more than a month ago.
>>
>> http://www.mail-archive.com/linuxppc-dev@ozlabs.org/msg22851.html
>>
>> Jeff, could you apply the patch?
>
> Can you resend, I don't seem to have it...
Here it is.
Thanks,
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 408da30..1f18ad9 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 of_device *ofdev,
ret = of_irq_to_resource(dn, 0, &irq_res);
if (ret == NO_IRQ)
- irq_res.start = irq_res.end = -1;
+ irq_res.start = irq_res.end = 0;
else
irq_res.flags = 0;
--
1.5.6.3
next prev parent reply other threads:[~2008-09-29 13:32 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-25 8:36 [PATCH] pata_platform struct resource signness fix Wang Jian
2008-09-25 8:54 ` Wang Jian
2008-09-25 10:40 ` Li Yang
2008-09-25 10:48 ` Anton Vorontsov
2008-09-29 4:19 ` Jeff Garzik
2008-09-29 13:32 ` Anton Vorontsov [this message]
2008-09-25 15:33 ` Wang Jian
2008-09-25 15:47 ` Anton Vorontsov
2008-09-25 9:12 ` Leo Li
2008-09-25 9:30 ` Wang Jian
-- strict thread matches above, loose matches on Subject: below --
2008-10-06 17:26 [PATCH] pata_of_platform: fix no irq handling Anton Vorontsov
2008-10-06 20:41 ` Matt Sealey
2008-10-06 21:32 ` Anton Vorontsov
2008-10-07 1:30 ` Tejun Heo
2008-10-07 9:18 ` Wang Jian
2008-10-07 9:26 ` Anton Vorontsov
2008-10-07 10:04 ` Benjamin Herrenschmidt
2008-10-07 9:37 ` Alan Cox
2008-10-08 8:40 ` David Woodhouse
2008-10-08 9:00 ` Alan Cox
2008-10-08 9:59 ` Geert Uytterhoeven
2008-10-08 10:27 ` Alan Cox
2008-10-10 17:55 ` Paul Mundt
2008-10-13 6:56 ` Tejun Heo
2008-10-13 23:27 ` Benjamin Herrenschmidt
2008-08-11 14:48 Possible bug in IRQ handling in pata_of_platform / pata_platform Steven A. Falco
2008-08-11 15:19 ` [PATCH] pata_of_platform: fix no irq handling Anton Vorontsov
2008-08-11 16:23 ` Steven A. Falco
2008-08-11 17:07 ` Anton Vorontsov
2008-08-11 22:00 ` Benjamin Herrenschmidt
2008-08-12 14:00 ` Steven A. Falco
2008-08-12 14:04 ` Anton Vorontsov
2008-08-12 14:18 ` Stefan Roese
2008-08-12 14:18 ` Sergei Shtylyov
2008-08-12 14:31 ` Anton Vorontsov
2008-08-13 21:25 ` Steven A. Falco
2008-08-11 16:29 ` Alan Cox
2008-08-11 16:36 ` Ben Dooks
2008-08-11 16:26 ` Alan Cox
2008-08-11 16:42 ` Steven A. Falco
2008-08-11 22:02 ` Benjamin Herrenschmidt
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