r6040: only disable RX interrupt if napi_schedule_prep is successful
When receiving the first RX interrupt before the internal call
to napi_schedule_prep is successful the RX interrupt gets disabled
and is never enabled again as the poll function never gets executed.
Signed-off-by: Michael Thalmeier <Michael.Thalmeier@sigmatek.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 200a363..0ffec46 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -677,9 +677,11 @@
if (status & RX_FIFO_FULL)
dev->stats.rx_fifo_errors++;
- /* Mask off RX interrupt */
- misr &= ~RX_INTS;
- napi_schedule(&lp->napi);
+ if (likely(napi_schedule_prep(&lp->napi))) {
+ /* Mask off RX interrupt */
+ misr &= ~RX_INTS;
+ __napi_schedule(&lp->napi);
+ }
}
/* TX interrupt request */