gpio: mpsse: ensure worker is torn down

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[ Upstream commit 179ef1127d ]

When an IRQ worker is running, unplugging the device would cause a
crash. The sealevel hardware this driver was written for was not
hotpluggable, so I never realized it.

This change uses a spinlock to protect a list of workers, which
it tears down on disconnect.

Signed-off-by: Mary Strodl <mstrodl@csh.rit.edu>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251014133530.3592716-3-mstrodl@csh.rit.edu
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Stable-dep-of: 1e876e5a08 ("gpio: mpsse: fix reference leak in gpio_mpsse_probe() error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Mary Strodl 2026-01-12 12:44:39 -05:00 • committed by Greg Kroah-Hartman

parent 4374a1cac1

commit 472d900c8b

1 changed files with 99 additions and 7 deletions

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drivers/gpio/gpio-mpsse.c

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