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Re: [PATCH] Input: eeti_ts: Mark as CONFIG_BROKEN

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On Sun, Apr 8, 2012 at 4:32 AM, Olof Johansson <olof@xxxxxxxxx> wrote:
> On Sat, Apr 7, 2012 at 11:38 AM, Sven Neumann <s.neumann@xxxxxxxxxxxx> wrote:
>> Hi,
>>
>>
>> On 07.04.12 09:02, Dmitry Torokhov wrote:
>>>
>>> On Fri, Apr 06, 2012 at 10:40:07PM -0700, Olof Johansson wrote:
>>>>
>>>> This seems to have been broken since 2010, so obviously noone actually
>>>> cares about the driver:
>>>>
>>>> make[4]: *** [drivers/input/touchscreen/eeti_ts.o] Error 1
>>>> drivers/input/touchscreen/eeti_ts.c: In function 'eeti_ts_irq_active':
>>>> drivers/input/touchscreen/eeti_ts.c:65:2: error: implicit declaration of
>>>> function 'irq_to_gpio' [-Werror=implicit-function-declaration]
>>>>
>>>> irq_to_gpio isn't available on most platforms today, so the driver
>>>> will need some rework by someone who has hardware access and can test
>>>> (to make sure that, for example, switching to level interrupts and just
>>>> keep taking them while there's more to process works).
>>>>
>>>> I guess it could just be scheduled for removal, but let's start with
>>>> marking it CONFIG_BROKEN.
>>>
>>>
>>> Well, it probably works quite well on arches that do have irq_to_gpio(),
>>> let's ask Daniel and Sven if they still have this hardware and if they
>>> can try the patch below that implements what you suggested.
>>
>>
>> This hardware is still in use and we also still follow kernel development
>> and try to update our customer devices to recent kernel versions regularly.
>> Currently we are at 3.1.10 and the touchscreen works well with that. I'll
>> try to update to a more recent kernel next week and will try your patch.
>
> Ah, you're right, and this was my bad. Looks like this change was
> introduced in 3.2 and broke this and one more driver (ezx-pcap):
>
> Author:     Haojian Zhuang <haojian.zhuang@xxxxxxxxxxx>
> AuthorDate: Mon Oct 10 16:03:51 2011 +0800
> Commit:     Haojian Zhuang <haojian.zhuang@xxxxxxxxxxx>
> CommitDate: Mon Nov 14 21:07:59 2011 +0800
>
>    ARM: pxa: rename gpio_to_irq and irq_to_gpio
>
>    Avoid to define gpio_to_irq() and irq_to_gpio() for potential name
>    confliction since multiple architecture will be built together.
>
>    Signed-off-by: Haojian Zhuang <haojian.zhuang@xxxxxxxxxxx>
>
>
> Haojian, I think it was probably premature to do the multiplatform
> change like that, since it means that a PXA-only kernel has no mapping
> from irq_to_gpio to pxa_irq_to_gpio. Can you please address this as a
> fix for 3.4?
>
>
I tried to fix ezx-pcap before. Since there's some codebase confliction, the
patch wasn't merged. I'll format patch again. And I'll try to fix other patches
that are covered in arch-pxa if they exist.

Best Regards
Haojian
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