if (vector && cpu_online(cpu) && cpumask_test_cpu(cpu, dest))
return 0;
+ /*
+ * Careful here. @apicd might either have move_in_progress set or
+ * be enqueued for cleanup. Assigning a new vector would either
+ * leave a stale vector on some CPU around or in case of a pending
+ * cleanup corrupt the hlist.
+ */
+ if (apicd->move_in_progress || !hlist_unhashed(&apicd->clist))
+ return -EBUSY;
+
vector = irq_matrix_alloc(vector_matrix, dest, resvd, &cpu);
- if (vector > 0)
- apic_update_vector(irqd, vector, cpu);
trace_vector_alloc(irqd->irq, vector, resvd, vector);
- return vector;
- }
-
- static int assign_vector_locked(struct irq_data *irqd,
- const struct cpumask *dest)
- {
- struct apic_chip_data *apicd = apic_chip_data(irqd);
- int vector = allocate_vector(irqd, dest);
-
if (vector < 0)
return vector;
+ apic_update_vector(irqd, vector, cpu);
+ apic_update_irq_cfg(irqd, vector, cpu);
- apic_update_irq_cfg(irqd, apicd->vector, apicd->cpu);
return 0;
}