linux-kernel - Re: [PATCH v7 00/14] platform/x86: alienware-wmi driver rework

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Message-ID: <7d4e693e-5d12-4c55-9db8-7f7dd45e8086@gmx.de>
Date: Mon, 3 Feb 2025 16:34:20 +0100
From: Armin Wolf <W_Armin@....de>
To: Kurt Borja <kuurtb@...il.com>, platform-driver-x86@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 Mario Limonciello <mario.limonciello@....com>,
 Hans de Goede <hdegoede@...hat.com>, Dell.Client.Kernel@...l.com,
 linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v7 00/14] platform/x86: alienware-wmi driver rework

Am 03.02.25 um 07:20 schrieb Kurt Borja:

> Hi!
>
> I bring some last minute modifications.
>
> I found commit
>
> 	8d8fc146dd7a ("nvmem: core: switch to use device_add_groups()")
>
> which states that it's unnecesary to call device_remove_groups() when
> the device is removed, so I dropped it to simplify things.

What? That sound quite strange to me. I CCed Greg because i am curious how this
should work.

>
> I also found commit
>
> 	957961b6dcc8 ("hwmon: (oxp-sensors) Move tt_toggle attribute to dev_groups")
>
> which states that no driver should add sysfs groups while probing the
> device as it races with userspace, so I re-added PROBE_FORCE_SYNCHRONOUS
> to the platform driver, so groups are added only after the device has
> finished probing.

Using PROBE_FORCE_SYNCHRONOUS is not going to solve this problem here, please remove it.

Thanks,
Armin Wolf

> I'm not 100% sure that the second commit message applies here, but it is
> revd-by Greg K-H so I added it just in case.
>
> Aside from that, I added .pprof to awcc_quirks because I'm going to add
> support for new features after this series, and it makes sense that
> force_platform_profile only forces the pprof and not other upcoming
> features.
>
> ~ Kurt
> ---
> [02/14]
>    - In alienware_alienfx_setup() add a devm action to remove the created
>      platform device
>    - Drop device_remove_groups() in WMAX .remove callback
>    - Add PROBE_FORCE_SYNCHRONOUS to the platform driver
>    - Drop .remove callbacks on both WMI drivers
>
> [03/14]
>    - Add awcc_platform_profile_init() to create the platform_profile
>      device on quirks->thermal == true condition
>
> [07/14]
>    - Add .pprof to awcc_quirks
>
> [10/14]
>    - Drop unused member `quirks` on `alienfx_priv` (remnant of another
>      version)
>
> v6: https://lore.kernel.org/platform-driver-x86/20250127040406.17112-1-kuurtb@gmail.com/
>
> Kurt Borja (14):
>    platform/x86: alienware-wmi: Add a state container for LED control
>      feature
>    platform/x86: alienware-wmi: Add WMI Drivers
>    platform/x86: alienware-wmi: Add a state container for thermal control
>      methods
>    platform/x86: alienware-wmi: Refactor LED control methods
>    platform/x86: alienware-wmi: Refactor hdmi, amplifier, deepslp methods
>    platform/x86: alienware-wmi: Refactor thermal control methods
>    platform/x86: alienware-wmi: Split DMI table
>    MAINTAINERS: Update ALIENWARE WMI DRIVER entry
>    platform/x86: Rename alienware-wmi.c
>    platform/x86: Add alienware-wmi.h
>    platform/x86: Split the alienware-wmi driver
>    platform/x86: dell: Modify Makefile alignment
>    platform/x86: Update alienware-wmi config entries
>    platform/x86: alienware-wmi: Update header and module information
>
>   MAINTAINERS                                   |    4 +-
>   drivers/platform/x86/dell/Kconfig             |   30 +-
>   drivers/platform/x86/dell/Makefile            |   45 +-
>   .../platform/x86/dell/alienware-wmi-base.c    |  496 +++++++
>   .../platform/x86/dell/alienware-wmi-legacy.c  |   95 ++
>   .../platform/x86/dell/alienware-wmi-wmax.c    |  790 +++++++++++
>   drivers/platform/x86/dell/alienware-wmi.c     | 1249 -----------------
>   drivers/platform/x86/dell/alienware-wmi.h     |  101 ++
>   8 files changed, 1534 insertions(+), 1276 deletions(-)
>   create mode 100644 drivers/platform/x86/dell/alienware-wmi-base.c
>   create mode 100644 drivers/platform/x86/dell/alienware-wmi-legacy.c
>   create mode 100644 drivers/platform/x86/dell/alienware-wmi-wmax.c
>   delete mode 100644 drivers/platform/x86/dell/alienware-wmi.c
>   create mode 100644 drivers/platform/x86/dell/alienware-wmi.h
>
>
> base-commit: 05dbaf8dd8bf537d4b4eb3115ab42a5fb40ff1f5