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From: Guenter Roeck <linux@roeck-us.net>
To: Josef Gajdusek <atx@atx.name>, jdelvare@suse.de
Cc: linux-kernel@vger.kernel.org, lm-sensors@lm-sensors.org
Subject: Re: [lm-sensors] [PATCH] drivers/hwmon/emc1403.c: add support for emc1412
Date: Mon, 12 May 2014 02:20:58 +0000	[thread overview]
Message-ID: <5370300A.8070102@roeck-us.net> (raw)
In-Reply-To: <536FFC55.2080009@roeck-us.net>

On 05/11/2014 03:40 PM, Guenter Roeck wrote:
[ ... ]

>>
>>       id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG);
>> -    if (id != 0x01)
>> +    if (id != 0x01 && id != 0x04) {
>>           return -ENODEV;
>
> This should be a separate patch, as it applies to emc1403/emc1404 as well,
> so we can backport it into -stable.
>

Also, the chip datasheet suggests that chip revision 3 exists as well.
Given that, I would suggest to replace the revision number check with
something like
	if (id < 0x01 || id > 0x04)
		return -ENODEV;

Guenter


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WARNING: multiple messages have this Message-ID (diff)
From: Guenter Roeck <linux@roeck-us.net>
To: Josef Gajdusek <atx@atx.name>, jdelvare@suse.de
Cc: linux-kernel@vger.kernel.org, lm-sensors@lm-sensors.org
Subject: Re: [lm-sensors] [PATCH] drivers/hwmon/emc1403.c: add support for emc1412
Date: Sun, 11 May 2014 19:20:58 -0700	[thread overview]
Message-ID: <5370300A.8070102@roeck-us.net> (raw)
In-Reply-To: <536FFC55.2080009@roeck-us.net>

On 05/11/2014 03:40 PM, Guenter Roeck wrote:
[ ... ]

>>
>>       id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG);
>> -    if (id != 0x01)
>> +    if (id != 0x01 && id != 0x04) {
>>           return -ENODEV;
>
> This should be a separate patch, as it applies to emc1403/emc1404 as well,
> so we can backport it into -stable.
>

Also, the chip datasheet suggests that chip revision 3 exists as well.
Given that, I would suggest to replace the revision number check with
something like
	if (id < 0x01 || id > 0x04)
		return -ENODEV;

Guenter


  reply	other threads:[~2014-05-12  2:20 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-11 13:00 [lm-sensors] [PATCH] drivers/hwmon/emc1403.c: add support for emc1412 Josef Gajdusek
2014-05-11 13:00 ` Josef Gajdusek
2014-05-11 22:40 ` [lm-sensors] " Guenter Roeck
2014-05-11 22:40   ` Guenter Roeck
2014-05-12  2:20   ` Guenter Roeck [this message]
2014-05-12  2:20     ` [lm-sensors] " Guenter Roeck
2014-05-12  6:10   ` Jean Delvare
2014-05-12  6:10     ` Jean Delvare
2014-05-12 15:59     ` [lm-sensors] " Guenter Roeck
2014-05-12 15:59       ` Guenter Roeck
2014-05-12 16:48       ` [lm-sensors] " Jean Delvare
2014-05-12 16:48         ` Jean Delvare
2014-05-12 18:09         ` [lm-sensors] " Guenter Roeck
2014-05-12 18:09           ` Guenter Roeck
2014-05-11 22:47 ` [lm-sensors] " Guenter Roeck
2014-05-11 22:47   ` Guenter Roeck
2014-05-12 12:34 ` [lm-sensors] [PATCH] drivers/hwmon/emc1403.c: add support for emc14x2 Josef Gajdusek
2014-05-12 12:34   ` Josef Gajdusek
2014-05-12 16:14   ` [lm-sensors] " Guenter Roeck
2014-05-12 16:14     ` Guenter Roeck
2014-05-12 17:03     ` [lm-sensors] " Jean Delvare
2014-05-12 17:03       ` Jean Delvare
2014-05-12 18:47       ` [lm-sensors] " Guenter Roeck
2014-05-12 18:47         ` Guenter Roeck
2014-05-12 19:55         ` [lm-sensors] " Jean Delvare
2014-05-12 19:55           ` Jean Delvare

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