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authorSoren Brinkmann <soren.brinkmann@xilinx.com>2014-05-04 15:43:00 -0700
committerDavid S. Miller <davem@davemloft.net>2014-05-05 17:11:18 -0400
commit02f7a34f34e30ee6fd02e01201ae130003e516ab (patch)
treea7d836841193fb37d4c3f787f0d8c9b1db1ed3d7 /drivers/net/ethernet/cadence
parent6a027b705fb6d2214647a638b44ea91ee6ce7e4c (diff)
downloadblackbird-op-linux-02f7a34f34e30ee6fd02e01201ae130003e516ab.tar.gz
blackbird-op-linux-02f7a34f34e30ee6fd02e01201ae130003e516ab.zip
net: macb: Re-enable RX interrupt only when RX is done
When data is received during the driver processing received data the NAPI is re-scheduled. In that case the RX interrupt should not be re-enabled. Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cadence')
-rw-r--r--drivers/net/ethernet/cadence/macb.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index e38fe39d9589..3f4b8ee0b0e7 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -891,16 +891,15 @@ static int macb_poll(struct napi_struct *napi, int budget)
if (work_done < budget) {
napi_complete(napi);
- /*
- * We've done what we can to clean the buffers. Make sure we
- * get notified when new packets arrive.
- */
- macb_writel(bp, IER, MACB_RX_INT_FLAGS);
-
/* Packets received while interrupts were disabled */
status = macb_readl(bp, RSR);
- if (unlikely(status))
+ if (unlikely(status)) {
+ if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE)
+ macb_writel(bp, ISR, MACB_BIT(RCOMP));
napi_reschedule(napi);
+ } else {
+ macb_writel(bp, IER, MACB_RX_INT_FLAGS);
+ }
}
/* TODO: Handle errors */
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