netdev - [PATCH 3/4] arcnet: com20020-pci: handle backplane mode depending on card type

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Message-Id: <20170628163221.32301-4-m.grzeschik@pengutronix.de>
Date:   Wed, 28 Jun 2017 18:32:20 +0200
From:   Michael Grzeschik <m.grzeschik@...gutronix.de>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, kernel@...gutronix.de
Subject: [PATCH 3/4] arcnet: com20020-pci: handle backplane mode depending on card type

We read the backplane mode of each subcard from bits 2 and 3 of the misc
register.

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
---
 drivers/net/arcnet/com20020-pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c
index dec300cac55f9..f5854ab7dc326 100644
--- a/drivers/net/arcnet/com20020-pci.c
+++ b/drivers/net/arcnet/com20020-pci.c
@@ -199,6 +199,8 @@ static int com20020pci_probe(struct pci_dev *pdev,
 		lp->timeout = timeout;
 		lp->hw.owner = THIS_MODULE;
 
+		lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
+
 		/* Get the dev_id from the PLX rotary coder */
 		if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
 			dev->dev_id = 0xc;
-- 
2.11.0