linux-acpi.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Hans de Goede <hdegoede@redhat.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>, Zhang Rui <rui.zhang@intel.com>,
	intel-gfx <intel-gfx@lists.freedesktop.org>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>
Subject: Re: [PATCH 1/2] ACPI: utils: Add acpi_reduced_hardware() helper
Date: Wed, 7 Apr 2021 19:43:15 +0200	[thread overview]
Message-ID: <4e796690-0a45-77e9-6b5d-61b3efa4b301@redhat.com> (raw)
In-Reply-To: <CAJZ5v0h6=_U+_=G8YL5rA701pTLGfyg4PmBudc3tFRKG=Wxh4A@mail.gmail.com>

Hi,

On 4/7/21 7:13 PM, Rafael J. Wysocki wrote:
> On Tue, Apr 6, 2021 at 11:17 PM Hans de Goede <hdegoede@redhat.com> wrote:
>>
>> Add a getter for the acpi_gbl_reduced_hardware variable so that modules
>> can check if they are running on an ACPI reduced-hw platform or not.
>>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>>  drivers/acpi/utils.c    | 11 +++++++++++
>>  include/acpi/acpi_bus.h |  1 +
>>  include/linux/acpi.h    |  5 +++++
>>  3 files changed, 17 insertions(+)
>>
>> diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
>> index 682edd913b3b..4cb061d3169a 100644
>> --- a/drivers/acpi/utils.c
>> +++ b/drivers/acpi/utils.c
>> @@ -872,6 +872,17 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv)
>>  }
>>  EXPORT_SYMBOL(acpi_dev_get_first_match_dev);
>>
>> +/**
>> + * acpi_reduced_hardware - Return if this is an ACPI-reduced-hw machine
>> + *
>> + * Return true when running on an ACPI-reduced-hw machine, false otherwise.
>> + */
>> +bool acpi_reduced_hardware(void)
>> +{
>> +       return acpi_gbl_reduced_hardware;
>> +}
>> +EXPORT_SYMBOL(acpi_reduced_hardware);
> 
> EXPORT_SYMBOL_GPL()?

Yes, that was my intention, no idea what happened here.

Before I send a v2, do you have any remarks on patch 2/2 (which is actually
the more interesting patch) ?

Regards,

Hans







> 
>> +
>>  /*
>>   * acpi_backlight= handling, this is done here rather then in video_detect.c
>>   * because __setup cannot be used in modules.
>> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
>> index f28b097c658f..d631cb52283e 100644
>> --- a/include/acpi/acpi_bus.h
>> +++ b/include/acpi/acpi_bus.h
>> @@ -78,6 +78,7 @@ acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
>>
>>  bool acpi_dev_found(const char *hid);
>>  bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
>> +bool acpi_reduced_hardware(void);
>>
>>  #ifdef CONFIG_ACPI
>>
>> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
>> index 3bdcfc4401b7..e2e6db8313c8 100644
>> --- a/include/linux/acpi.h
>> +++ b/include/linux/acpi.h
>> @@ -748,6 +748,11 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv)
>>         return NULL;
>>  }
>>
>> +static inline bool acpi_reduced_hardware(void)
>> +{
>> +       return false;
>> +}
>> +
>>  static inline void acpi_dev_put(struct acpi_device *adev) {}
>>
>>  static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
>> --
>> 2.30.2
>>
> 


  reply	other threads:[~2021-04-07 17:43 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-06 21:16 [PATCH 1/2] ACPI: utils: Add acpi_reduced_hardware() helper Hans de Goede
2021-04-06 21:16 ` [PATCH 2/2] ACPI: video: Check LCD flag on ACPI-reduced-hardware devices Hans de Goede
2021-04-07 17:13 ` [PATCH 1/2] ACPI: utils: Add acpi_reduced_hardware() helper Rafael J. Wysocki
2021-04-07 17:43   ` Hans de Goede [this message]
2021-04-07 17:50     ` Rafael J. Wysocki
2021-04-07 18:02       ` Hans de Goede

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=4e796690-0a45-77e9-6b5d-61b3efa4b301@redhat.com \
    --to=hdegoede@redhat.com \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=lenb@kernel.org \
    --cc=linux-acpi@vger.kernel.org \
    --cc=rafael@kernel.org \
    --cc=rjw@rjwysocki.net \
    --cc=rui.zhang@intel.com \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body.
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).