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net: macb: Re-enable RX interrupt only when RX is done

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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>
This commit is contained in:
Soren Brinkmann 2014-05-04 15:43:00 -07:00 • committed by David S. Miller
commit 02f7a34f34
1 changed files with 6 additions and 7 deletions
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13
drivers/net/ethernet/cadence/macb.c
View file

@ -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 */