drm/qxl: return IRQ_NONE if it was not our irq

[deliverable/linux.git] / drivers / gpu / drm / qxl / qxl_irq.c

diff --git a/drivers/gpu/drm/qxl/qxl_irq.c b/drivers/gpu/drm/qxl/qxl_irq.c
index 34d6a85e9023655efd5c67bd6b1e67d20b34b1bc..0bf1e20c6e44cee16a4c11b18b7903713e4707a9 100644 (file)
--- a/drivers/gpu/drm/qxl/qxl_irq.c
+++ b/drivers/gpu/drm/qxl/qxl_irq.c
@@ -33,6 +33,9 @@ irqreturn_t qxl_irq_handler(int irq, void *arg)
 
        pending = xchg(&qdev->ram_header->int_pending, 0);
 
+       if (!pending)
+               return IRQ_NONE;
+
        atomic_inc(&qdev->irq_received);
 
        if (pending & QXL_INTERRUPT_DISPLAY) {