linux-kernel - Re: [patch] cciss: Fix regression that no device nodes are created if no logical drives are configured.

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Message-ID: <20080609195915.GA12866@beardog.cca.cpqcorp.net>
Date:	Mon, 9 Jun 2008 14:59:15 -0500
From:	"Mike Miller (OS Dev)" <mikem@...rdog.cca.cpqcorp.net>
To:	scameron@...rdog.cca.cpqcorp.net
Cc:	axboe@...nel.dk, linux-kernel@...r.kernel.org
Subject: Re: [patch] cciss: Fix regression that no device nodes are created if no logical drives are configured.

On Mon, Jun 09, 2008 at 01:46:49PM -0500, scameron@...rdog.cca.cpqcorp.net wrote:
> 
> 
> Fix regression in cciss driver that if no logical drives are configured,
> no device nodes at all get created.
> 
> Signed-off-by: Stephen M. Cameron <scameron@...rdog.cca.cpqcorp.net>
Acked-by: Mike Miller <mike.miller@...com>
> 
> ---
> 
>  drivers/block/cciss.c |    4 ++++
>  1 files changed, 4 insertions(+)
> 
> diff -puN drivers/block/cciss.c~cciss_fix_cxd0_missing_if_no_drives drivers/block/cciss.c
> --- linux-2.6.26rc5/drivers/block/cciss.c~cciss_fix_cxd0_missing_if_no_drives	2008-06-09 09:27:37.000000000 -0500
> +++ linux-2.6.26rc5-root/drivers/block/cciss.c	2008-06-09 12:33:07.000000000 -0500
> @@ -3535,6 +3535,10 @@ static int __devinit cciss_init_one(stru
>  	for (j = 0; j <= hba[i]->highest_lun; j++)
>  		add_disk(hba[i]->gendisk[j]);
>  
> +	/* we must register the controller even if no disks exist */
> +	if (hba[i]->highest_lun == -1)
> +		add_disk(hba[i]->gendisk[0]);
> +
>  	return 1;
>  
>        clean4:
> _
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