diff options
author | Marc Zyngier <marc.zyngier@arm.com> | 2018-05-08 13:14:34 +0100 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2018-05-13 15:59:00 +0200 |
commit | 6461934371bfc1bfe6b424b197a546b4effd0a32 (patch) | |
tree | e7e18a3f40794c65e0dac8bfc8919bff21bb4b94 /drivers/irqchip/irq-gic-v3.c | |
parent | 8a22a3e1e768c309b718f99bd86f9f25a453e0dc (diff) | |
download | linux-6461934371bfc1bfe6b424b197a546b4effd0a32.tar.bz2 |
irqdomain: Let irq_find_host default to DOMAIN_BUS_WIRED
At the beginning of times, irq_find_host() was simple. Each device node
implemented at most one irq domain, and we were happy. Over time, things
have become more complex, and we now have nodes implementing a plurality
of domains, tagged by "bus_token".
Crutially, users of irq_find_host() all expect the most basic domain
to be returned, and not any other domain such as a bus-specific MSI
domain.
So let's change irq_find_host() to first look for a DOMAIN_BUS_WIRED
domain, and only if this fails fallback to DOMAIN_BUS_ANY. Note that
this is consistent with what irq_create_fwspec_mapping is already
doing, see 530cbe100ef7 ("irqdomain: Allow domain lookup with
DOMAIN_BUS_WIRED token").
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <robh@kernel.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lkml.kernel.org/r/20180508121438.11301-6-marc.zyngier@arm.com
Diffstat (limited to 'drivers/irqchip/irq-gic-v3.c')
0 files changed, 0 insertions, 0 deletions