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-rw-r--r--drivers/staging/comedi/drivers/dt282x.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index c2a66dcf99fe..6a1222c45d35 100644
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -483,7 +483,8 @@ static irqreturn_t dt282x_interrupt(int irq, void *d)
}
#endif
cfc_handle_events(dev, s);
- cfc_handle_events(dev, s_ao);
+ if (s_ao)
+ cfc_handle_events(dev, s_ao);
return IRQ_RETVAL(handled);
}