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From: Guenter Roeck <linux@roeck-us.net>
To: Avri Altman <Avri.Altman@wdc.com>,
	"James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Bart Van Assche <bvanassche@acm.org>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Bean Huo <beanhuo@micron.com>
Subject: Re: [PATCH v3 1/2] scsi: ufs: Probe for temperature notification support
Date: Mon, 13 Sep 2021 07:24:29 -0700	[thread overview]
Message-ID: <bbe45ecf-853f-77f7-9094-ded8c59075f4@roeck-us.net> (raw)
In-Reply-To: <DM6PR04MB657565612A342272B2160A72FCD99@DM6PR04MB6575.namprd04.prod.outlook.com>

On 9/13/21 12:49 AM, Avri Altman wrote:
>>>> The "enable" attribute only makes sense if it can be used to actually
>>>> enable or disable a specific sensor, and is not tied to limit
>>>> attributes but to the actual sensor values.
>>> See explanation above.
>>>    Will make it writable as well.
>>>
>>
>> That only makes sense if the information is passed to the chip. What is going to
>> happen if the user writes 0 into the attribute ?
> Will turn off the temperature exception bits, so that Tcase is no longer valid,
> and the device will always return Tcase = 0.
> 

Ok. Then attempts to read the temperature should return -ENODATA, not -EINVAL,
if Tcase == 0.

Guenter

  reply	other threads:[~2021-09-13 15:26 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-12 13:19 [PATCH v3 0/2] Add temperature notification support Avri Altman
2021-09-12 13:19 ` [PATCH v3 1/2] scsi: ufs: Probe for " Avri Altman
2021-09-12 15:24   ` Guenter Roeck
2021-09-13  7:06     ` Avri Altman
2021-09-13  7:41       ` Guenter Roeck
2021-09-13  7:49         ` Avri Altman
2021-09-13 14:24           ` Guenter Roeck [this message]
2021-09-13 15:26             ` Avri Altman
2021-09-12 13:19 ` [PATCH v3 2/2] scsi: ufs: Add temperature notification exception handling Avri Altman
2021-09-12 15:43   ` kernel test robot
2021-09-12 15:55   ` Guenter Roeck
2021-09-13  6:09     ` Avri Altman
2021-09-12 16:33   ` kernel test robot
2021-09-12 16:50   ` kernel test robot

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