crypto: omap-sham - do not schedule tasklet if there is no active requests
[linux-2.6.git] / drivers / crypto / omap-sham.c
index 804c16b..6399a8f 100644 (file)
@@ -1085,6 +1085,11 @@ static irqreturn_t omap_sham_irq(int irq, void *dev_id)
                                 SHA_REG_CTRL_OUTPUT_READY);
        omap_sham_read(dd, SHA_REG_CTRL);
 
+       if (!test_bit(FLAGS_BUSY, &dd->flags)) {
+               dev_warn(dd->dev, "Interrupt when no active requests.\n");
+               return IRQ_HANDLED;
+       }
+
        set_bit(FLAGS_OUTPUT_READY, &dd->flags);
        tasklet_schedule(&dd->done_task);