netdev - [PATCH] dm9000: Support MAC address setting through platform data.

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Message-Id: <200807231741.53011.laurentp@cse-semaphore.com>
Date:	Wed, 23 Jul 2008 17:41:52 +0200
From:	Laurent Pinchart <laurentp@...-semaphore.com>
To:	netdev@...r.kernel.org
Cc:	Ben Dooks <ben-linux@...ff.org>
Subject: [PATCH] dm9000: Support MAC address setting through platform data.

The dm9000 driver reads the chip's MAC address from the attached EEPROM. When
no EEPROM is present, or when the MAC address is invalid, it falls back to
reading the address from the chip.

This patch lets platform code set the desired MAC address through platform
data.

Signed-off-by: Laurent Pinchart <laurentp@...-semaphore.com>
---
 drivers/net/dm9000.c   |    3 +++
 include/linux/dm9000.h |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 864295e..6bc8924 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -716,6 +716,11 @@ dm9000_probe(struct platform_device *pdev)
 	for (i = 0; i < 6; i += 2)
 		dm9000_read_eeprom(db, i / 2, ndev->dev_addr+i);
 
+	if (!is_valid_ether_addr(ndev->dev_addr) && pdata != NULL) {
+		mac_src = "platform data";
+		memcpy(ndev->dev_addr, pdata->dev_addr, 6);
+	}
+
 	if (!is_valid_ether_addr(ndev->dev_addr)) {
 		/* try reading from mac */
 		
diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h
index a375046..4fb49a4 100644
--- a/include/linux/dm9000.h
+++ b/include/linux/dm9000.h
@@ -26,6 +26,7 @@
 
 struct dm9000_plat_data {
 	unsigned int	flags;
+	unsigned char	dev_addr[6];
 
 	/* allow replacement IO routines */
 
-- 
1.5.0

-- 
Laurent Pinchart
CSE Semaphore Belgium

Chaussee de Bruxelles, 732A
B-1410 Waterloo
Belgium

T +32 (2) 387 42 59
F +32 (2) 387 42 75
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