Barry Song 50aaa6b174 genirq: Add IRQF_NO_AUTOEN for request_irq/nmi() ... [ Upstream commit cbe16f35be ] Many drivers don't want interrupts enabled automatically via request_irq(). So they are handling this issue by either way of the below two: (1) irq_set_status_flags(irq, IRQ_NOAUTOEN); request_irq(dev, irq...); (2) request_irq(dev, irq...); disable_irq(irq); The code in the second way is silly and unsafe. In the small time gap between request_irq() and disable_irq(), interrupts can still come. The code in the first way is safe though it's subobtimal. Add a new IRQF_NO_AUTOEN flag which can be handed in by drivers to request_irq() and request_nmi(). It prevents the automatic enabling of the requested interrupt/nmi in the same safe way as #1 above. With that the various usage sites of #1 and #2 above can be simplified and corrected. Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: dmitry.torokhov@gmail.com Link: https://lore.kernel.org/r/20210302224916.13980-2-song.bao.hua@hisilicon.com Stable-dep-of: 99c05e4283 ("iio: adis: add '__adis_enable_irq()' implementation") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-01-14 10:15:58 +01:00
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affinity.c	genirq/affinity: Consider that CPUs on nodes can be unbalanced	2022-04-20 09:23:29 +02:00
autoprobe.c
chip.c	genirq: Don't return error on missing optional irq_request_resources()	2022-08-21 15:15:28 +02:00
cpuhotplug.c
debug.h
debugfs.c
devres.c
dummychip.c
generic-chip.c
handle.c	random: remove unused irq_flags argument from add_interrupt_randomness()	2022-05-30 09:33:27 +02:00
internals.h	genirq/irqdesc: Don't try to remove non-existing sysfs files	2023-01-14 10:15:18 +01:00
ipi.c
irq_sim.c
irqdesc.c	genirq/irqdesc: Don't try to remove non-existing sysfs files	2023-01-14 10:15:18 +01:00
irqdomain.c
Kconfig	genirq: GENERIC_IRQ_IPI depends on SMP	2022-08-21 15:15:28 +02:00
Makefile
manage.c	genirq: Add IRQF_NO_AUTOEN for request_irq/nmi()	2023-01-14 10:15:58 +01:00
matrix.c	genirq/matrix: Prevent allocation counter corruption	2021-05-11 14:47:17 +02:00
migration.c
msi.c	genirq/msi: Shutdown managed interrupts with unsatifiable affinities	2022-12-02 17:40:06 +01:00
pm.c
proc.c
resend.c
settings.h
spurious.c
timings.c	genirq/timings: Fix error return code in irq_timings_test_irqs()	2021-09-15 09:50:29 +02:00