linux-kernel - Re: [PATCH 2/5] mtip32xx: Add new sysfs entry 'status' and fix restart port

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Date:	Fri, 6 Apr 2012 15:03:24 -0700
From:	Asai Thambi S P <asamymuthupa@...ron.com>
To:	Greg KH <greg@...ah.com>
CC:	Jens Axboe <axboe@...nel.dk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sam Bradshaw <sbradshaw@...ron.com>
Subject: Re: [PATCH 2/5] mtip32xx: Add new sysfs entry 'status' and fix restart
 port

On 4/6/2012 2:44 PM, Greg KH wrote:

> On Fri, Apr 06, 2012 at 02:34:19PM -0700, Asai Thambi S P wrote:
>> On 4/6/2012 11:12 AM, Asai Thambi S P wrote:
>>
>>> On 4/5/2012 6:10 PM, Greg KH wrote:
>>>
>>>> On Thu, Apr 05, 2012 at 02:00:12PM -0700, Asai Thambi S P wrote:
>>>>>
>>>>> * Add support for detecting the following device status
>>>>> 	- write protect
>>>>> 	- over temp (thermal shutdown)
>>>>> * New sysfs entry 'status' created for this device,  possible values - online, write_protect, thermal_shutdown
>>>>
>>>> All new (and existing) sysfs files must be documented in
>>>> Documentation/ABI/ please do so for these new ones when you add them to
>>>> the kernel.
>>>
>>>
>>> I was not aware of this. Thanks. I will a add new file for mtip32xx driver.
>>>
>>
>>
>> Greg,
>>
>> The sysfs entry for the disk is 
>> /sys/block/rssda -> ../devices/pci0000:00/0000:00:01.0/0000:01:00.0/block/rssda
>>
>> Should I use /sys/block/<disk>/<entry> or
>> /sys/devices/.../block/<disk>/entry> in the doc file?
> 
> What do the existing api files show for block devices?
> 


I was looking into sysfs-driver-* files to create sysfs-driver-mtip32xx.
These files have paths like /sys/bus/pci/*, /sys/devices/*,
/sys/class/bluetooth/*, etc.

There are sysfs-block-dm and sysfs-block-zram files with
/sys/block/dm-<num>/dm/* and /sys/block/zram<id>/*. If I have to follow
these, then the file would be sysfs-driver-rssd with /sys/block/<disk>/*.

Let me know.

--
Regards,
Asai Thambi
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