Patch "syscon: Decrease driver registration priority" breaks clps711x target

Andrey Smirnov andrew.smirnov at gmail.com
Wed Jul 13 10:12:59 PDT 2016


On Wed, Jul 13, 2016 at 9:17 AM, Alexander Shiyan <shc_work at mail.ru> wrote:
>>Среда, 13 июля 2016, 18:52 +03:00 от Andrey Smirnov <andrew.smirnov at gmail.com>:
>>
>>On Wed, Jul 13, 2016 at 6:04 AM, Sascha Hauer < s.hauer at pengutronix.de > wrote:
>>> On Wed, Jul 13, 2016 at 10:37:11AM +0300, Alexander Shiyan wrote:
>>>> Hello All.
>>>>
>>>> Patch "syscon: Decrease driver registration priority" breaks clps711x target.
>>>> Previously, the syscon device initialized at "core_initcall", that did not cause problems.
>>>> Now the device is initialized at "device_initcall" level, but clps711x uses syscon for
>>>> the serial, so serial device initialized at "console_initcall" level.
>>>> Any ideas?
>>>
>>> We could move syscon back to core_initcall level and in the syscon
>>> driver use dev_get_resource() instead of request_iomem_region().
>>
>>Right now the driver uses both, so if we just drop the call to
>>request_iomem_region that was problematic for me on i.MX6, that should
>>resolve the issue. I think this would also bring the behavior of
>>syscon driver closer to what it does in Linux kernel land. The only
>>negative effect of that change I think would be that on the platforms
>>where syscon driver controls that region of memory, it no longer would
>>be reported as such by "iomem".
>>
>>Apologies for breaking your use-case, Alexander.
>
> Andrey? Can you revert this and resend it in another way?

Sure, I can. Can't promise to do it before the end of the week though.

Thanks,
Andrey



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