Disable interrupts in filter in order to avoid interrupt storm and

    CPU starvation

1 files changed, 4 insertions, 7 deletions

diff --git a/sys/dev/smc/if_smc.c b/sys/dev/smc/if_smc.c
index 06f6ca0..f6df350 100644
--- a/sys/dev/smc/if_smc.c
+++ b/sys/dev/smc/if_smc.c
@@ -807,6 +807,10 @@ smc_intr(void *context)
 	struct smc_softc	*sc;
 	
 	sc = (struct smc_softc *)context;
+	/*
+	 * Block interrupts in order to let smc_task_intr to kick in
+	 */
+	smc_write_1(sc, MSK, 0);
 	taskqueue_enqueue_fast(sc->smc_tq, &sc->smc_intr);
 	return (FILTER_HANDLED);
 }
@@ -827,13 +831,6 @@ smc_task_intr(void *context, int pending)
 	smc_select_bank(sc, 2);
 
 	/*
-	 * Get the current mask, and then block all interrupts while we're
-	 * working.
-	 */
-	if ((ifp->if_capenable & IFCAP_POLLING) == 0)
-		smc_write_1(sc, MSK, 0);
-
-	/*
 	 * Find out what interrupts are flagged.
 	 */
 	status = smc_read_1(sc, IST) & sc->smc_mask;