| To: | Jamie Iles <jamie@jamieiles.com> |
|---|---|
| Subject: | Re: [PATCH 05/10] MIPS: lantiq: add watchdog support |
| From: | John Crispin <blogic@openwrt.org> |
| Date: | Thu, 06 Jan 2011 12:38:53 +0100 |
| Cc: | Ralf Baechle <ralf@linux-mips.org>, Ralph Hempel <ralph.hempel@lantiq.com>, Wim Van Sebroeck <wim@iguana.be>, linux-mips@linux-mips.org, linux-watchdog@vger.kernel.org |
| In-reply-to: | <20110106111530.GD2946@pulham.picochip.com> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <1294257379-417-1-git-send-email-blogic@openwrt.org> <1294257379-417-6-git-send-email-blogic@openwrt.org> <20110105234910.GD2112@gallagher> <4D25908E.9070509@openwrt.org> <20110106111530.GD2946@pulham.picochip.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.12) Gecko/20100913 Icedove/3.0.7 |
On 06/01/11 12:15, Jamie Iles wrote:
> On Thu, Jan 06, 2011 at 10:51:10AM +0100, John Crispin wrote:
>
>> On 06/01/11 00:49, Jamie Iles wrote:
>>
>>> I think you need a clk_put() here too to balance the clk_get() in the
>>> probe method so you'll need to keep a reference to the clk.
>>>
>>>
>>>
>> Hi Jamie,
>>
>> i will fold your suggestions into the series.
>>
>> the clk.c/h implementation on the lantiq target is very simple. it only
>> allows to read the static rates of the 3 clocks. clk_put is implemented
>> as follows
>>
>> void
>> clk_put(struct clk *clk)
>> {
>> /* not used */
>> }
>> EXPORT_SYMBOL(clk_put);
>>
>> so in theory you are right and we should call that function, however as
>> it is only a stub and the driver is only used by the lantiq target i
>> think it is save to leave out the clk_put(); call. we could however put
>> a commet in the code to make this clear (same as with the clk_enable()
>> not being needed as the clocks are always running)
>>
> Could that ever change for future devices that share the same watchdog
> block? If so, then adding in that clk_put() and clk_enable() might be
> worth it as it doesn't cost much.
>
> Jamie
>
>
agreed, i will add both calls.
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