linux-kernel - Re: Drives missing at boot

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Message-ID: <AANLkTi=bKn3t8eD=n8tDeZrn-mXsEzFHGj46-Z5U9EGA@mail.gmail.com>
Date:	Tue, 3 Aug 2010 11:47:25 -0700
From:	Mark Knecht <markknecht@...il.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	Tejun Heo <tj@...nel.org>, Paul Check <paul@...checks.ca>,
	Linux Kernel List <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>
Subject: Re: Drives missing at boot

On Tue, Aug 3, 2010 at 11:41 AM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> On Mon, 2 Aug 2010 15:07:11 -0700 Mark Knecht wrote:
>
>> On Thu, Jul 22, 2010 at 5:39 AM, Tejun Heo <tj@...nel.org> wrote:
>>
>> Hi Tejun,
>>    I'm finally home and trying to get back to this. I'm really a bad
>> programmer so I don't know what I've done wrong but it seems patch
>> isn't happy with me.
>>
>> c2stable linux # patch --dry-run -p1 <../ata_piix-sidpr-lock.patch
>> patching file drivers/ata/ata_piix.c
>> patch: **** malformed patch at line 13:
>
> Whenever the patch file was saved on this system, line 13 of it was
> split (probably by an email client).  Whenever I see this, I just
> join (merge) that line and the next one and try again... sometimes
> several lines are malformed and have to be fixed like this.
>

Randy,
   Could very well be what happened. I added line 13 (the printk) by hand

<SNIP - ORIGINAL PATCH FILE>
struct piix_host_priv {
       const int *map;
       u32 saved_iocfg;
+       spinlock_t sidpr_lock;  /* FIXME: remove once locking in EH is fixed */
        void __iomem *sidpr;
};

<SNIP - MY CHANGE BY HAND>
struct piix_host_priv {
       const int *map;
       u32 saved_iocfg;
+       spinlock_t sidpr_lock;  /* FIXME: remove once locking in EH is fixed */
+       printk("MWK - ata_sidpr patch applied!\n");
       void __iomem *sidpr;
};

Maybe I should have just put it on the same line as the previous
spinlock command?

I'll play with it and see if I can get it working.

Thanks,
Mark
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