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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-11-14 11:23:05 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-11-14 11:23:05 +0100 |
| commit | 41cc30412d6692c25506bf2d4e65c4364c70c10a (patch) | |
| tree | d9adeb9c94a54998002d46aeebb99f86f1232016 /kernel/irq/manage.c | |
| parent | x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() (diff) | |
| parent | irqchip/gic-v3-its: Remove artificial dependency on PCI (diff) | |
| download | linux-41cc30412d6692c25506bf2d4e65c4364c70c10a.tar.xz linux-41cc30412d6692c25506bf2d4e65c4364c70c10a.zip | |
Merge tag 'irqchip-4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip updates for 4.15, take #4 from Marc Zyngier
- A core irq fix for legacy cases where the irq trigger is not reported
by firmware
- A couple of GICv3/4 fixes (Kconfig, of-node refcount, error handling)
- Trivial pr_err fixes
Diffstat (limited to 'kernel/irq/manage.c')
| -rw-r--r-- | kernel/irq/manage.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 2ff1c0c82fc9..0f922729bab9 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1246,7 +1246,18 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) * set the trigger type must match. Also all must * agree on ONESHOT. */ - unsigned int oldtype = irqd_get_trigger_type(&desc->irq_data); + unsigned int oldtype; + + /* + * If nobody did set the configuration before, inherit + * the one provided by the requester. + */ + if (irqd_trigger_type_was_set(&desc->irq_data)) { + oldtype = irqd_get_trigger_type(&desc->irq_data); + } else { + oldtype = new->flags & IRQF_TRIGGER_MASK; + irqd_set_trigger_type(&desc->irq_data, oldtype); + } if (!((old->flags & new->flags) & IRQF_SHARED) || (oldtype != (new->flags & IRQF_TRIGGER_MASK)) || |