linux-kernel - [PATCH v1 0/4] sdio: Use bus type function for shutdown

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Message-ID: <cover.1765968841.git.ukleinek@kernel.org>
Date: Wed, 17 Dec 2025 12:09:22 +0100
From: Uwe Kleine-König <u.kleine-koenig@...libre.com>
To: Karun Eagalapati <karun256@...il.com>,
	Amitkumar Karwar <amit.karwar@...pinesignals.com>,
	Kalle Valo <kvalo@...eaurora.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Ping-Ke Shih <pkshih@...ltek.com>
Cc: linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-wireless@...r.kernel.org
Subject: [PATCH v1 0/4] sdio: Use bus type function for shutdown

Hello,

this series is part of an effort to get rid of the .shutdown() callback
(and .probe() and .remove()) in struct device_driver. Preparing that,
all sdio drivers that up to now use this callback are converted to a new
sdio specific shutdown callback.

Patch #2 is just a cleanup I noticed while working on
drivers/net/wireless/rsi/rsi_91x_sdio.c. Note that it's uncommon to have
the shutdown callback conditionalized by #ifdef CONFIG_PM. I guess this
dependency was introduced by mistake in commit 063848c3e155 ("rsi: sdio:
Add WOWLAN support for S5 shutdown state"), but I didn't address it
here.

Patches #3 and #4 depend on the first patch, and with just the first
patch applied there is a runtime warning (emitted by the driver core in
driver_register()) for each unconverted driver. So it would be nice to
get the whole series in during a single merge window to not let users
face the warning.

This series was build tested on amd64 and arm64 using allmodconfig.

Best regards
Uwe

Uwe Kleine-König (4):
  sdio: Provide a bustype shutdown function
  wifi: rsi: sdio: Reduce use of #ifdef for CONFIG_PM
  wifi: rsi: sdio: Migrate to use sdio specific shutdown function
  wifi: rtw88: sdio: Migrate to use sdio specific shutdown function

 drivers/mmc/core/sdio_bus.c                   | 25 +++++++++++++++++++
 .../net/wireless/realtek/rtw88/rtw8723cs.c    |  2 +-
 .../net/wireless/realtek/rtw88/rtw8723ds.c    |  2 +-
 .../net/wireless/realtek/rtw88/rtw8821cs.c    |  2 +-
 .../net/wireless/realtek/rtw88/rtw8822bs.c    |  2 +-
 .../net/wireless/realtek/rtw88/rtw8822cs.c    |  2 +-
 drivers/net/wireless/realtek/rtw88/sdio.c     |  3 +--
 drivers/net/wireless/realtek/rtw88/sdio.h     |  2 +-
 drivers/net/wireless/rsi/rsi_91x_sdio.c       | 11 +++-----
 include/linux/mmc/sdio_func.h                 |  1 +
 10 files changed, 36 insertions(+), 16 deletions(-)

base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
-- 
2.47.3