From: Hannes Reinecke <hare@suse.de>
To: David Milburn <dmilburn@redhat.com>
Cc: tj@kernel.org, linux-ide@vger.kernel.org, kay.sievers@vrfy.org,
coughlan@redhat.com, fengguang.wu@intel.com, gwendal@google.com
Subject: Re: [PATCH V2 #for-3.10] libata: export ata_port port_no attribute via /sys
Date: Wed, 15 May 2013 07:37:37 +0200 [thread overview]
Message-ID: <51931F21.6020708@suse.de> (raw)
In-Reply-To: <1368557320-15735-1-git-send-email-dmilburn@redhat.com>
On 05/14/2013 08:48 PM, David Milburn wrote:
> While registering host controller track port number based upon number
> of ports available on the controller, export port_no attribute through
> /sys. This patch is needed by udev for composing persistent links in
> /dev/disk/by-path.
>
> # pwd
> /sys/devices/pci0000:00/0000:00:1f.2/ata8/ata_port/ata8
> # ll
> total 0
> lrwxrwxrwx. 1 root root 0 Mar 6 12:43 device -> ../../../ata8
> -r--r--r--. 1 root root 4096 Mar 6 12:43 idle_irq
> -r--r--r--. 1 root root 4096 Mar 6 12:43 nr_pmp_links
> -r--r--r--. 1 root root 4096 Mar 6 12:43 port_no
> drwxr-xr-x. 2 root root 0 Mar 6 12:42 power
> lrwxrwxrwx. 1 root root 0 Mar 6 12:41 subsystem -> ../../../../../../class/ata_port
> -rw-r--r--. 1 root root 4096 Mar 6 12:40 uevent
> # cat port_no
> 1
>
> Signed-off-by: David Milburn <dmilburn@redhat.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
prev parent reply other threads:[~2013-05-15 5:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-14 18:48 [PATCH V2 #for-3.10] libata: export ata_port port_no attribute via /sys David Milburn
2013-05-14 18:44 ` Tejun Heo
2013-05-15 5:37 ` Hannes Reinecke [this message]
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