linux-kernel - Re: [PATCH 0/2] Deduplicate bin_attribute simple read() callbacks

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Date: Mon, 8 Apr 2024 17:01:22 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Lukas Wunner <lukas@...ner.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	linux-kernel@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>, 
	linuxppc-dev@...ts.ozlabs.org, linux-acpi@...r.kernel.org, 
	Jean Delvare <jdelvare@...e.com>, Ard Biesheuvel <ardb@...nel.org>, linux-efi@...r.kernel.org, 
	Zhenyu Wang <zhenyuw@...ux.intel.com>, Zhi Wang <zhi.wang.linux@...il.com>, 
	intel-gvt-dev@...ts.freedesktop.org, 
	Daniel Lezcano <daniel.lezcano@...aro.org>, linux-pm@...r.kernel.org, 
	Luis Chamberlain <mcgrof@...nel.org>, linux-modules@...r.kernel.org
Subject: Re: [PATCH 0/2] Deduplicate bin_attribute simple read() callbacks

On Sat, Apr 6, 2024 at 3:52 PM Lukas Wunner <lukas@...ner.de> wrote:
>
> For my upcoming PCI device authentication v2 patches, I have the need
> to expose a simple buffer in virtual memory as a bin_attribute.
>
> It turns out we've duplicated the ->read() callback for such simple
> buffers a fair number of times across the tree.
>
> So instead of reinventing the wheel, I decided to introduce a common
> helper and eliminate all duplications I could find.
>
> I'm open to a bikeshedding discussion on the sysfs_bin_attr_simple_read()
> name. ;)
>
> Lukas Wunner (2):
>   sysfs: Add sysfs_bin_attr_simple_read() helper
>   treewide: Use sysfs_bin_attr_simple_read() helper
>
>  arch/powerpc/platforms/powernv/opal.c              | 10 +-------
>  drivers/acpi/bgrt.c                                |  9 +-------
>  drivers/firmware/dmi_scan.c                        | 12 ++--------
>  drivers/firmware/efi/rci2-table.c                  | 10 +-------
>  drivers/gpu/drm/i915/gvt/firmware.c                | 26 +++++----------------
>  .../intel/int340x_thermal/int3400_thermal.c        |  9 +-------
>  fs/sysfs/file.c                                    | 27 ++++++++++++++++++++++
>  include/linux/sysfs.h                              | 15 ++++++++++++
>  init/initramfs.c                                   | 10 +-------
>  kernel/module/sysfs.c                              | 13 +----------
>  10 files changed, 56 insertions(+), 85 deletions(-)
>
> --

For the series

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>