diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/handle.c | 2 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 4 | ||||
| -rw-r--r-- | kernel/irq/matrix.c | 7 |
3 files changed, 10 insertions, 3 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index a8e14c80b405..762a928e18f9 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -173,7 +173,7 @@ irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc, unsigned int *flags __irq_wake_thread(desc, action); - /* Fall through - to add to randomness */ + fallthrough; /* to add to randomness */ case IRQ_HANDLED: *flags |= action->flags; break; diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 52ac5391dcc6..5df903fccb60 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -271,7 +271,7 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, case IRQ_SET_MASK_OK: case IRQ_SET_MASK_OK_DONE: cpumask_copy(desc->irq_common_data.affinity, mask); - /* fall through */ + fallthrough; case IRQ_SET_MASK_OK_NOCOPY: irq_validate_effective_affinity(data); irq_set_thread_affinity(desc); @@ -868,7 +868,7 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned long flags) case IRQ_SET_MASK_OK_DONE: irqd_clear(&desc->irq_data, IRQD_TRIGGER_MASK); irqd_set(&desc->irq_data, flags); - /* fall through */ + fallthrough; case IRQ_SET_MASK_OK_NOCOPY: flags = irqd_get_trigger_type(&desc->irq_data); diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c index 30cc217b8631..651a4ad6d711 100644 --- a/kernel/irq/matrix.c +++ b/kernel/irq/matrix.c @@ -380,6 +380,13 @@ int irq_matrix_alloc(struct irq_matrix *m, const struct cpumask *msk, unsigned int cpu, bit; struct cpumap *cm; + /* + * Not required in theory, but matrix_find_best_cpu() uses + * for_each_cpu() which ignores the cpumask on UP . + */ + if (cpumask_empty(msk)) + return -EINVAL; + cpu = matrix_find_best_cpu(m, msk); if (cpu == UINT_MAX) return -ENOSPC; |