netdev - [PATCH v2 3/6] pch_gbe: change order of PHY address discovering

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Message-Id: <1401958387-8154-3-git-send-email-alexander.stein@systec-electronic.com>
Date:	Thu,  5 Jun 2014 10:53:04 +0200
From:	Alexander Stein <alexander.stein@...tec-electronic.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Daniel Krueger <daniel.krueger@...tec-electronic.com>,
	netdev@...r.kernel.org,
	Alexander Stein <alexander.stein@...tec-electronic.com>
Subject: [PATCH v2 3/6] pch_gbe: change order of PHY address discovering

From: Daniel Krueger <daniel.krueger@...tec-electronic.com>

Scan PHY address 0 after all other addresses. Address 0 is a multicast
address which unfortunately does not work properly with Micrel KSZ9021.
Our board uses PHY address 2.

Signed-off-by: Daniel Krueger <daniel.krueger@...tec-electronic.com>
Signed-off-by: Alexander Stein <alexander.stein@...tec-electronic.com>
---
 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index e7acbd7..9ac407d 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -662,9 +662,9 @@ static int pch_gbe_init_phy(struct pch_gbe_adapter *adapter)
 	u32 addr;
 	u16 bmcr, stat;
 
-	/* Discover phy addr by searching addrs in order {1,0,2,..., 31} */
+	/* Discover phy addr by searching addrs in order {1,2,...,31,0} */
 	for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) {
-		adapter->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr;
+		adapter->mii.phy_id = (addr == 31) ? 0 : (addr + 1);
 		bmcr = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMCR);
 		stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR);
 		stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR);
-- 
1.8.5.5

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