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Subject: [rtc-linux] Re: [PATCH] rtc: rename so the tps6586x-rtc module can be
 autoloaded at boot
To: Nicolas Chauvet <kwizart@gmail.com>
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 <CABr+WTnFodrRSThovUCwY+8Th0TjeOPSAFkCKcupfjAXE4bUAA@mail.gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>,
 Alexandre Belloni <alexandre.belloni@free-electrons.com>,
 rtc-linux@googlegroups.com, linux-omap@vger.kernel.org,
 linux-tegra@vger.kernel.org
From: Stephen Warren <swarren@wwwdotorg.org>
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Date: Tue, 10 May 2016 17:02:27 -0600
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On 05/10/2016 03:44 PM, Nicolas Chauvet wrote:
> 2016-05-10 17:43 GMT+02:00 Stephen Warren <swarren@wwwdotorg.org>:
>> On 05/10/2016 04:26 AM, Nicolas Chauvet wrote:
>>>
>>> This module is loaded by the related mfd driver which has
>>> the needed MODULE_DEVICE_TABLE(i2c,...).
>>>
>>> This patch fix the modalias when the rtc driver is built
>>> as a module, so the right name is used.
>>> Everything operates correctly when this module is builtin.
>>
>>
>> I'm sure this used to work. Do you know when/why it broke? Perhaps a Fixes:
>> tag would be useful, and perhaps a Cc: stable?
>
> I don't remember autoloading of rtc-tps6586x.ko has ever worked. Then
> there is still the issue of rtc modules loaded too late for the kernel
> (or the kernel not capable to defer the read of hw clock), but that's
> another issue.
>
> I first tried to report the issue on this bug tracker and at that
> time, autoloading wasn't working (was in 2014).
> https://bugzilla.redhat.com/show_bug.cgi?id=1074002
>
> I'm sure current distros using an arm generic kernel (with all
> modules) will rebase on kernel 4.4, but technically the bug is present
> in kernel 3.10 from the oldest current maintained branch (since the
> driver introduction).

Ah, all the cases I used previous did indeed have the RTC driver 
built-in not a module, so that explains it.

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