[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 08 Aug 2013 11:33:13 -0600
From: Stephen Warren <swarren@...dotorg.org>
To: Guenter Roeck <linux@...ck-us.net>
CC: Wei Ni <wni@...dia.com>, "khali@...ux-fr.org" <khali@...ux-fr.org>,
Matthew Longnecker <MLongnecker@...dia.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] hwmon: (lm90) Add power control
On 08/08/2013 05:23 AM, Guenter Roeck wrote:
> On 08/08/2013 02:47 AM, Wei Ni wrote:
...
>> I think get_regulator() will return error values, not only
>> -EPROBE_DEFER, so we should set data->lm90_reg to NULL to handle other
>> error values.
>>
> Matter of opinion if you want to check for IS_ERR or NULL later on.
No, if regulator returns either:
* Something valid
* Someting IS_ERR()
... then everywhere has to check the value using IS_ERR().
If regulator returns either:
* Something valid
* Someting NULL
... then everywhere has to check the value against NULL.
checking against both IS_ERR() and NULL shouldn't ever happen, and
likewise IS_ERR_OR_NULL() is deprecated.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists