soc: ti: knav_qmss_queue: Use IRQF_NO_AUTOEN flag in request_irq()

As commit cbe16f3 ("genirq: Add IRQF_NO_AUTOEN for request_irq/nmi()")
said, reqeust_irq() and then disable_irq() is unsafe. In the small time gap
between request_irq() and disable_irq(), interrupts can still come.

IRQF_NO_AUTOEN flag can be used by drivers to request_irq(). It prevents
the automatic enabling of the requested interrupt in the same
safe way. With that the usage can be simplified and corrected.

Compile-tested only.

Signed-off-by: Jinjie Ruan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nishanth Menon <[email protected]>

Author: Jinjie Ruan

drivers/soc/ti/knav_qmss_queue.c

@@ -119,11 +119,10 @@ static int knav_queue_setup_irq(struct knav_range_info *range,
 
 	if (range->flags & RANGE_HAS_IRQ) {
 		irq = range->irqs[queue].irq;
-		ret = request_irq(irq, knav_queue_int_handler, 0,
-					inst->irq_name, inst);
+		ret = request_irq(irq, knav_queue_int_handler, IRQF_NO_AUTOEN,
+				  inst->irq_name, inst);
 		if (ret)
 			return ret;
-		disable_irq(irq);
 		if (range->irqs[queue].cpu_mask) {
 			ret = irq_set_affinity_hint(irq, range->irqs[queue].cpu_mask);
 			if (ret) {