soc: fsl: qbman: Check if CPU is offline when initializing portals

If the CPU to affine the portal interrupt is offline at boot time
affine the portal interrupt to another online CPU. If the CPU is later
brought online the hotplug handler will correctly adjust the affinity.
Moved common code in a function.

Signed-off-by: Roy Pledge <[e-mail]>
Signed-off-by: Madalin Bucur <[e-mail]>
Signed-off-by: Li Yang <[e-mail]>

drivers/soc/fsl/qbman/bman.c

···
 		dev_err(c->dev, "request_irq() failed\n");
 		goto fail_irq;
 	}
-	if (c->cpu != -1 && irq_can_set_affinity(c->irq) &&
-	    irq_set_affinity(c->irq, cpumask_of(c->cpu))) {
-		dev_err(c->dev, "irq_set_affinity() failed\n");
+
+	if (dpaa_set_portal_irq_affinity(c->dev, c->irq, c->cpu))
 		goto fail_affinity;
-	}
 
 	/* Need RCR to be empty before continuing */
 	ret = bm_rcr_get_fill(p);

drivers/soc/fsl/qbman/dpaa_sys.h

···
 #define QBMAN_MEMREMAP_ATTR	MEMREMAP_WC
 #endif
 
+static inline int dpaa_set_portal_irq_affinity(struct device *dev,
+					       int irq, int cpu)
+{
+	int ret = 0;
+
+	if (!irq_can_set_affinity(irq)) {
+		dev_err(dev, "unable to set IRQ affinity\n");
+		return -EINVAL;
+	}
+
+	if (cpu == -1 || !cpu_online(cpu))
+		cpu = cpumask_any(cpu_online_mask);
+
+	ret = irq_set_affinity(irq, cpumask_of(cpu));
+	if (ret)
+		dev_err(dev, "irq_set_affinity() on CPU %d failed\n", cpu);
+
+	return ret;
+}
+
 #endif	/* __DPAA_SYS_H */

drivers/soc/fsl/qbman/qman.c

···
 		dev_err(c->dev, "request_irq() failed\n");
 		goto fail_irq;
 	}
-	if (c->cpu != -1 && irq_can_set_affinity(c->irq) &&
-	    irq_set_affinity(c->irq, cpumask_of(c->cpu))) {
-		dev_err(c->dev, "irq_set_affinity() failed\n");
+
+	if (dpaa_set_portal_irq_affinity(c->dev, c->irq, c->cpu))
 		goto fail_affinity;
-	}
 
 	/* Need EQCR to be empty before continuing */
 	isdr &= ~QM_PIRQ_EQCI;