Commit 0a2fae2a authored by Wolfram Sang's avatar Wolfram Sang Committed by Greg Kroah-Hartman
Browse files

lib: update DEBUG_SHIRQ docs to match reality 

There is no extra interrupt when registering a shared interrupt handler
since 2011. Update the Kconfig text to make it clear and to avoid wrong
assumptions when debugging issues found by it.

Fixes: 6d83f94d ("genirq: Disable the SHIRQ_DEBUG call in request_threaded_irq for now")
Link: https://lore.kernel.org/linux-i2c/859e8211-2c56-8dd5-d6fb-33e4358e4128@pengutronix.de/T/#mf24d7070d7e0c8f17b6be6ceb51df94b7d7613b3


Reviewed-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20200702222024.6915-1-wsa+renesas@sang-engineering.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2fce60be

lib/Kconfig.debug

+4 −4
Original line number Diff line number Diff line
@@ -844,10 +844,10 @@ config DEBUG_SHIRQ 
	bool "Debug shared IRQ handlers"

	depends on DEBUG_KERNEL

	help

	  Enable this to generate a spurious interrupt as soon as a shared

	  interrupt handler is registered, and just before one is deregistered.

	  Drivers ought to be able to handle interrupts coming in at those

	  points; some don't and need to be caught.

	  Enable this to generate a spurious interrupt just before a shared

	  interrupt handler is deregistered (generating one when registering

	  is currently disabled). Drivers need to handle this correctly. Some

	  don't and need to be caught.



menu "Debug Oops, Lockups and Hangs"

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