genirq: Allow the PM device to originate from irq domain

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[ Upstream commit 1f8863bfb5 ]

As a preparation to moving the reference to the device used for
runtime power management, add a new 'dev' field to the irqdomain
structure for that exact purpose.

The irq_chip_pm_{get,put}() helpers are made aware of the dual
location via a new private helper.

No functional change intended.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220201120310.878267-2-maz@kernel.org
Stable-dep-of: 33b1c47d1f ("irqchip/imx-irqsteer: Handle runtime power management correctly")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Marc Zyngier 2022-02-01 12:02:59 +00:00 • committed by Greg Kroah-Hartman

parent 50beae26ed

commit 64494bfe5b

2 changed files with 28 additions and 5 deletions

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10

include/linux/irqdomain.h

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23

kernel/irq/chip.c

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