linux-kernel - Re: Re: [PATCH v3 1/4] drm/bridge: sil_sii8620: depend on INPUT instead of selecting it.

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Message-ID: <35bf8a61-b84c-3aae-00de-14637d37547b@samsung.com>
Date:   Thu, 28 Mar 2019 12:48:39 +0100
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     "Life is hard, and then you die" <ronald@...ovation.ch>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Henrik Rydberg <rydberg@...math.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Lukas Wunner <lukas@...ner.de>,
        Federico Lorenzi <federico@...velground.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Inki Dae <inki.dae@...sung.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Re: Re: [PATCH v3 1/4] drm/bridge: sil_sii8620: depend on INPUT
 instead of selecting it.

On 28.03.2019 01:07, Life is hard, and then you die wrote:
>   Hi Andrzej,
>
> On Wed, Mar 27, 2019 at 03:13:37PM +0100, Andrzej Hajda wrote:
>> +cc: dri-devel
>>
>> On 27.03.2019 02:48, Ronald Tschalär wrote:
>>> commit d6abe6df706c66d803e6dd4fe98c1b6b7f125a56 (drm/bridge:
>>> sil_sii8620: do not have a dependency of RC_CORE) added a dependency on
>>> INPUT. However, this causes problems with other drivers, in particular
>>> an input driver that depends on MFD_INTEL_LPSS_PCI (to be added in a
>>> future commit):
>>>
>>>   drivers/clk/Kconfig:9:error: recursive dependency detected!
>>>   drivers/clk/Kconfig:9:        symbol COMMON_CLK is selected by MFD_INTEL_LPSS
>>>   drivers/mfd/Kconfig:566:      symbol MFD_INTEL_LPSS is selected by MFD_INTEL_LPSS_PCI
>>>   drivers/mfd/Kconfig:580:      symbol MFD_INTEL_LPSS_PCI is implied by KEYBOARD_APPLESPI
>>>   drivers/input/keyboard/Kconfig:73:    symbol KEYBOARD_APPLESPI depends on INPUT
>>>   drivers/input/Kconfig:8:      symbol INPUT is selected by DRM_SIL_SII8620
>>>   drivers/gpu/drm/bridge/Kconfig:83:    symbol DRM_SIL_SII8620 depends on DRM_BRIDGE
>>>   drivers/gpu/drm/bridge/Kconfig:1:     symbol DRM_BRIDGE is selected by DRM_PL111
>>>   drivers/gpu/drm/pl111/Kconfig:1:      symbol DRM_PL111 depends on COMMON_CLK
>>>
>>> According to the docs, select should only be used for non-visible
>>> symbols. Furthermore almost all other references to INPUT throughout the
>>> kernel config are depends, not selects. Hence this change.
>>>
>>> CC: Inki Dae <inki.dae@...sung.com>
>>> CC: Andrzej Hajda <a.hajda@...sung.com>
>>> Signed-off-by: Ronald Tschalär <ronald@...ovation.ch>
>> This is drm bridge driver, next time please cc it to dri-devel ML also.
> Ok. Though as noted in the cover letter, the patch here is meant as a
> placeholder till the real thing being discussed on dri-devel is
> finalized. I was trying to avoid cross-posting too much, hence the
> separate submission on dri-devel.
>
>> Anyway this is not the solution we have agreed to.
>>
>> Why have you abandoned the patch [1]? It needed just some minor
>> polishing, as I wrote in response to this mail.
>>
>> [1]:
>> https://lore.kernel.org/lkml/20190124082423.23139-1-ronald@innovation.ch/T/#mf620df0b1583096a214d8e2e690387078583472f
> It seems your mail client doesn't like me :-) I got neither of your
> responses. Sorry, I should've checked the archives when I didn't hear
> anything. In any case thank you for your review, and I will update
> that patch and send out a new version shortly.


I see where is the problem: Your mail client (mutt I suppose) sets
Mail-Followup-To header to all recipients (To and Cc) without the
sender. And my client (thunderbird) after pressing "Reply-All" checks
for Mail-Followup-To field, if present it uses only it to set
recipients, so in your case it does not response to the original author.

I do not know which mail client works incorrectly in this case, but for
sure it is not what we want :)

I do not know how to solve the issue in thunderbird, maybe mutt is more
configurable?


Regards

Andrzej


>
>
>   Cheers,
>
>   Ronald
>
>
>>> ---
>>>  drivers/gpu/drm/bridge/Kconfig | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
>>> index 2fee47b0d50b..eabedc83f25c 100644
>>> --- a/drivers/gpu/drm/bridge/Kconfig
>>> +++ b/drivers/gpu/drm/bridge/Kconfig
>>> @@ -83,9 +83,9 @@ config DRM_PARADE_PS8622
>>>  config DRM_SIL_SII8620
>>>  	tristate "Silicon Image SII8620 HDMI/MHL bridge"
>>>  	depends on OF
>>> +	depends on INPUT
>>>  	select DRM_KMS_HELPER
>>>  	imply EXTCON
>>> -	select INPUT
>>>  	select RC_CORE
>>>  	help
>>>  	  Silicon Image SII8620 HDMI/MHL bridge chip driver.
>>
>