irq_poll: Fix irq_poll_sched()

The IRQ_POLL_F_SCHED bit is set as long as polling is ongoing.
This means that irq_poll_sched() must proceed if this bit has
not yet been set.

Fixes: commit ea51190c0315 ("irq_poll: fold irq_poll_sched_prep into irq_poll_sched").
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/lib/irq_poll.c b/lib/irq_poll.c
index 2836620..836f7db 100644 (file)
--- a/lib/irq_poll.c
+++ b/lib/irq_poll.c
@@ -29,7 +29,7 @@ void irq_poll_sched(struct irq_poll *iop)
 
        if (test_bit(IRQ_POLL_F_DISABLE, &iop->state))
                return;
-       if (!test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state))
+       if (test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state))
                return;
 
        local_irq_save(flags);