From 9dfa9a27b620640322588df399eb8f624b48d877 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 12 Nov 2014 15:40:43 -0800
Subject: [PATCH] net: systemport: fix tx work done in TX napi poll

With commit d75b1ade567 ("net: less interrupt masking in NAPI") napi
repoll is done only when work_done == budget. bcm_sysport_tx_poll()
always returns 0 whether or not we completed the poll quantum.

Fix this by returning either 0 when we did complete the TX ring reclaim,
or budget to trigger a repoll.

Fixes: d75b1ade567 ("net: less interrupt masking in NAPI")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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