diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2017-06-20 01:37:48 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-22 18:21:24 +0200 |
| commit | 708d174b6c32bffc5d73793bc7a267bcafeb6558 (patch) | |
| tree | a8ac5bc8c4f92eb1fb178e45d4939cf9d7bd49ac /kernel/irq/chip.c | |
| parent | genirq: Introduce IRQD_MANAGED_SHUTDOWN (diff) | |
| download | linux-dev-708d174b6c32bffc5d73793bc7a267bcafeb6558.tar.xz linux-dev-708d174b6c32bffc5d73793bc7a267bcafeb6558.zip | |
genirq: Split out irq_startup() code
Split out the inner workings of irq_startup() so it can be reused to handle
managed interrupts gracefully.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170619235447.033235144@linutronix.de
Diffstat (limited to 'kernel/irq/chip.c')
| -rw-r--r-- | kernel/irq/chip.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index e290d73b88e2..1163089aa245 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -195,6 +195,23 @@ static void irq_state_set_started(struct irq_desc *desc) irqd_set(&desc->irq_data, IRQD_IRQ_STARTED); } +static int __irq_startup(struct irq_desc *desc) +{ + struct irq_data *d = irq_desc_get_irq_data(desc); + int ret = 0; + + irq_domain_activate_irq(d); + if (d->chip->irq_startup) { + ret = d->chip->irq_startup(d); + irq_state_clr_disabled(desc); + irq_state_clr_masked(desc); + } else { + irq_enable(desc); + } + irq_state_set_started(desc); + return ret; +} + int irq_startup(struct irq_desc *desc, bool resend) { int ret = 0; @@ -204,19 +221,9 @@ int irq_startup(struct irq_desc *desc, bool resend) if (irqd_is_started(&desc->irq_data)) { irq_enable(desc); } else { - irq_domain_activate_irq(&desc->irq_data); - if (desc->irq_data.chip->irq_startup) { - ret = desc->irq_data.chip->irq_startup(&desc->irq_data); - irq_state_clr_disabled(desc); - irq_state_clr_masked(desc); - } else { - irq_enable(desc); - } - irq_state_set_started(desc); - /* Set default affinity mask once everything is setup */ + ret = __irq_startup(desc); irq_setup_affinity(desc); } - if (resend) check_irq_resend(desc); |