Subject: [PATCH 10/33] net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT

From: Rasmus Villemoes <[email-masked]>
Date: Wed, 29 May 2019 07:02:11 +0000

[ Upstream commit 84b3fd1fc9592d431e23b077e692fa4e3fd0f086 ]

Currently, the upper half of a 4-byte STATS_TYPE_PORT statistic ends
up in bits 47:32 of the return value, instead of bits 31:16 as they
should.

Fixes: 6e46e2d821bb ("net: dsa: mv88e6xxx: Fix u64 statistics")
Signed-off-by: Rasmus Villemoes <[email-masked]>
Reviewed-by: Vivien Didelot <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 6cba05a80892..5a81ce42b808 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -892,7 +892,7 @@ static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
 			err = mv88e6xxx_port_read(chip, port, s->reg + 1, &reg);
 			if (err)
 				return U64_MAX;
-			high = reg;
+			low |= ((u32)reg) << 16;
 		}
 		break;
 	case STATS_TYPE_BANK1:
-- 
2.20.1