[PATCH 3.2 023/140] can: ti_hecc: Fix napi poll return value for repoll

[Ben Hutchings]

3.2.100-rc1 review patch.  If anyone has any objections, please let me know.

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From: Oliver Stäbler <oliver.staeb...@bytesatwork.ch>

commit f6c23b174c3c96616514827407769cbcfc8005cf upstream.

After commit d75b1ade567f ("net: less interrupt masking in NAPI") napi
repoll is done only when work_done == budget.
So we need to return budget if there are still packets to receive.

Signed-off-by: Oliver Stäbler <oliver.staeb...@bytesatwork.ch>
Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/net/can/ti_hecc.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -651,6 +651,9 @@ static int ti_hecc_rx_poll(struct napi_s
                mbx_mask = hecc_read(priv, HECC_CANMIM);
                mbx_mask |= HECC_TX_MBOX_MASK;
                hecc_write(priv, HECC_CANMIM, mbx_mask);
+       } else {
+               /* repoll is done only if whole budget is used */
+               num_pkts = quota;
        }
 
        return num_pkts;