4.4-stable review patch. If anyone has any objections, please let me know.
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From: Andrew Lunn andrew@lunn.ch
[ Upstream commit 6e46e2d821bb22b285ae8187959096b65d063b0d ]
The switch maintains u64 counters for the number of octets sent and received. These are kept as two u32's which need to be combined. Fix the combing, which wrongly worked on u16's.
Fixes: 80c4627b2719 ("dsa: mv88x6xxx: Refactor getting a single statistic") Reported-by: Chris Healy Chris.Healy@zii.aero Signed-off-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/dsa/mv88e6xxx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -712,7 +712,7 @@ static uint64_t _mv88e6xxx_get_ethtool_s if (s->sizeof_stat == 8) _mv88e6xxx_stats_read(ds, s->reg + 1, &high); } - value = (((u64)high) << 16) | low; + value = (((u64)high) << 32) | low; return value; }