[PATCH v2 1/2] dwc_eth_qos: do not clear pause flags from phy_device->supported

[Niklas Cassel]

From: Niklas Cassel <niklas.cas...@axis.com>

phy_device->supported is originally set by the PHY driver.
The ethernet driver should filter phy_device->supported to only contain
flags supported by the IP.
The IP supports setting rx and tx flow control independently,
therefore SUPPORTED_Pause and SUPPORTED_Asym_Pause should not be cleared.
If the flags are cleared, pause frames cannot be enabled (even if they
are supported by the PHY).

Signed-off-by: Niklas Cassel <niklas.cas...@axis.com>
Signed-off-by: Jesper Nilsson <jesp...@axis.com>
Acked-by: Lars Persson <lar...@axis.com>
---
 drivers/net/ethernet/synopsys/dwc_eth_qos.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/synopsys/dwc_eth_qos.c 
b/drivers/net/ethernet/synopsys/dwc_eth_qos.c
index 0d0053128542..d775729648ef 100644
--- a/drivers/net/ethernet/synopsys/dwc_eth_qos.c
+++ b/drivers/net/ethernet/synopsys/dwc_eth_qos.c
@@ -982,7 +982,8 @@ static int dwceqos_mii_probe(struct net_device *ndev)
        if (netif_msg_probe(lp))
                phy_attached_info(phydev);
 
-       phydev->supported &= PHY_GBIT_FEATURES;
+       phydev->supported &= PHY_GBIT_FEATURES | SUPPORTED_Pause |
+                            SUPPORTED_Asym_Pause;
 
        lp->link    = 0;
        lp->speed   = 0;
-- 
2.1.4