Re: [PATCH for v4.9-stable] reset: make optional functions really optional

[Sasha Levin <sashal@kernel.org>]

On Mon, Dec 03, 2018 at 12:31:59PM -0600, Dinh Nguyen wrote:
>
>
>On 12/3/18 11:44 AM, Sasha Levin wrote:
>> On Mon, Dec 03, 2018 at 11:30:29AM -0600, Dinh Nguyen wrote:
>>> From: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com>
>>>
>>> commit bb475230b8e59a547ab66ac3b02572df21a580e9 upstream.
>>>
>>> The *_get_optional_* functions weren't really optional so this patch
>>> makes them really optional.
>>>
>>> These *_get_optional_* functions will now return NULL instead of an error
>>> if no matching reset phandle is found in the DT, and all the
>>> reset_control_* functions now accept NULL rstc pointers.
>>>
>>> Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com>
>>> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
>>> ---
>>> Please apply to v4.9.y stable tree.
>>
>> The original commit had a few upstream fixes:
>>
>> bb6c7768385b reset: remove remaining WARN_ON() in <linux/reset.h>
>> 1554bbd4ad40 reset: make device_reset_optional() really optional
>> 62e24c5775ec reset: add exported __reset_control_get, return NULL if
>> optional
>> 0ca10b60ceeb reset: fix optional reset_control_get stubs to return NULL
>> 4891486fb2c8 reset: core: fix reset_control_put
>>
>> We'll need to backport them to 4.9 as well if you backport this commit.
>>
>
>Hmm..I was able to fix an ethernet driver load issue by just backporting
>this patch. Should I investigate backport of the other patches as well?

That patch will probably work on it's own, but if there are fixes for it
then they should be backported as well.

--
Thanks,
Sasha