LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: <wsa@the-dreams.de>, <mika.westerberg@linux.intel.com>,
	<jarkko.nikula@linux.intel.com>, <linux-i2c@vger.kernel.org>,
	<linux-acpi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<benjamin.tissoires@redhat.com>, <jbroadus@gmail.com>,
	<patches@opensource.cirrus.com>
Subject: Re: [PATCH 4/5] i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq
Date: Wed, 22 May 2019 09:19:05 +0100	[thread overview]
Message-ID: <20190522081905.GC99937@ediswmail.ad.cirrus.com> (raw)
In-Reply-To: <20190521172726.GO9224@smile.fi.intel.com>

On Tue, May 21, 2019 at 08:27:26PM +0300, Andy Shevchenko wrote:
> On Tue, May 21, 2019 at 04:05:01PM +0100, Charles Keepax wrote:
> > It makes sense to contain all the ACPI IRQ handling in a single helper
> > function.
> 
> > Note that this one is somewhat interesting, it seems the search
> > through the resource list is done against the companion device
> > of the adapter but the GPIO search is done against the companion
> > device of the client. It feels to me like these really should
> > be done on the same device, and certainly this is what SPI
> > does (both against the equivalent of the adapter). Perhaps
> > someone with more ACPI knowledge than myself could comment?
> 
> It would be interesting to see the path how you come to this conclusion.
> 

Apologies but I am not sure which conclusion you are referencing.
Assuming it is them being called with different acpi_device's.
It is perhaps me misunderstanding things but it looks like
i2c_acpi_get_info implies the adev should correspond to the
adapter. Where as acpi_dev_gpio_irq_get is called with the result
of ACPI_COMPANION(dev) where dev is client->dev.

> >  	acpi_dev_free_resource_list(&resource_list);
> >  
> > +	if (*irq < 0)
> > +		*irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(&client->dev), 0);
> 
> I think adev here is what we may use here.
> 

Indeed that is what I would have expected as well, I will update
the code to do so and hopefully any issues will come out in
testing.

> You may put assert here and see if it happens when you test your series.
> 

Alas I don't have a good way to test this series, they come out
of some additional work Wolfram wanted based on some issues
caused by a device tree fix I made a while back.

Thanks,
Charles

  reply	other threads:[~2019-05-22  8:19 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21 15:04 [PATCH 0/5] I2C IRQ Probe Improvements Charles Keepax
2019-05-21 15:04 ` [PATCH 1/5] i2c: acpi: Factor out getting the IRQ from ACPI Charles Keepax
2019-05-21 15:04 ` [PATCH 2/5] i2c: acpi: Use available IRQ helper functions Charles Keepax
2019-05-21 17:16   ` Andy Shevchenko
2019-05-21 15:05 ` [PATCH 3/5] i2c: core: Move ACPI IRQ handling to probe time Charles Keepax
2019-05-21 17:18   ` Andy Shevchenko
2019-05-21 15:05 ` [PATCH 4/5] i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq Charles Keepax
2019-05-21 17:27   ` Andy Shevchenko
2019-05-22  8:19     ` Charles Keepax [this message]
2019-05-21 15:05 ` [PATCH 5/5] i2c: core: Tidy up handling of init_irq Charles Keepax
  -- strict thread matches above, loose matches on Subject: below --
2019-05-20  8:49 [PATCH 0/5] I2C IRQ Probe Improvements Charles Keepax
2019-05-20  8:49 ` [PATCH 4/5] i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq Charles Keepax
2019-05-21 11:37   ` Mika Westerberg

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190522081905.GC99937@ediswmail.ad.cirrus.com \
    --to=ckeepax@opensource.cirrus.com \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=benjamin.tissoires@redhat.com \
    --cc=jarkko.nikula@linux.intel.com \
    --cc=jbroadus@gmail.com \
    --cc=linux-acpi@vger.kernel.org \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mika.westerberg@linux.intel.com \
    --cc=patches@opensource.cirrus.com \
    --cc=wsa@the-dreams.de \
    --subject='Re: [PATCH 4/5] i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).