[PATCH v4 4/9] net: pxa168_eth: fix Ethernet flow control status

Antoine Tenart
2014-09-23T12:15:31Z

IEEE 802.3x Ethernet flow control is disabled when bit (1 << 2) is set
in the port status register. Fix the flow control detection in the link
event handling function which was relying on the opposite assumption.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
---
drivers/net/ethernet/marvell/pxa168_eth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
index a27cd85c030d..5aa2ce2625b4 100644
--- a/drivers/net/ethernet/marvell/pxa168_eth.c
+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
@@ -163,7 +163,7 @@
/* Bit definitions for Port status */
#define PORT_SPEED_100 (1 << 0)
#define FULL_DUPLEX (1 << 1)
-#define FLOW_CONTROL_ENABLED (1 << 2)
+#define FLOW_CONTROL_DISABLED (1 << 2)
#define LINK_UP (1 << 3)

/* Bit definitions for work to be done */
@@ -885,7 +885,7 @@ static void handle_link_event(struct pxa168_eth_private *pep)
speed = 10;

duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
- fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
+ fc = (port_status & FLOW_CONTROL_DISABLED) ? 0 : 1;
netdev_info(dev, "link up, %d Mb/s, %s duplex, flow control %sabled\n",
speed, duplex ? "full" : "half", fc ? "en" : "dis");
if (!netif_carrier_ok(dev))
--
1.9.1