[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 StÃbler <oliver.staebler@xxxxxxxxxxxxxx>

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 StÃbler <oliver.staebler@xxxxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 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;