The disable_irq_nosync function, not the disable_irq function, must be
used to disable the DMA channel interrupt from within the interrupt
service routine. Change the disable_irq call to disable_irq_nosync.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
         */
        if (napi_schedule_prep(&channel->napi)) {
                /* Disable Tx and Rx interrupts */
-               disable_irq(channel->dma_irq);
+               disable_irq_nosync(channel->dma_irq);
 
                /* Turn on polling */
                __napi_schedule(&channel->napi);