linux-kernel - Re: [PATCH] USB2NET : SR9700 : One Chip USB 1.1 USB2NET SR9700 Device Driver Support

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Message-ID: <20130829230659.GC12124@electric-eye.fr.zoreil.com>
Date:	Fri, 30 Aug 2013 01:06:59 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	liujunliang_ljl@....com
Cc:	davem@...emloft.net, horms@...ge.net.au, joe@...ches.com,
	gregkh@...uxfoundation.org, netdev@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	sunhecheng@....126.com
Subject: Re: [PATCH] USB2NET : SR9700 : One Chip USB 1.1 USB2NET SR9700
 Device Driver Support

Liu, please check those.

---
 drivers/net/usb/sr9700.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/usb/sr9700.c b/drivers/net/usb/sr9700.c
index 3f05b35..3ae3caf 100644
--- a/drivers/net/usb/sr9700.c
+++ b/drivers/net/usb/sr9700.c
@@ -99,8 +99,9 @@ static int sr_share_read_word(struct usbnet *dev, int phy, u8 reg,
 
 	mutex_lock(&dev->phy_mutex);
 
+	// FIXME: the mistery 0x40 appears in sr_share_write_word as well.
 	sr_write_reg(dev, EPAR, phy ? (reg | 0x40) : reg);
-	sr_write_reg(dev, EPCR, phy ? 0xc : 0x4);
+	sr_write_reg(dev, EPCR, phy ? (EPCR_EPOS | EPCR_ERPRR) : EPCR_ERPRR);
 
 	ret = wait_phy_eeprom_ready(dev, phy);
 	if (ret < 0)
@@ -128,7 +129,10 @@ static int sr_share_write_word(struct usbnet *dev, int phy, u8 reg,
 	if (ret < 0)
 		goto out_unlock;
 
+	// FIXME: see sr_share_read_word above.
 	sr_write_reg(dev, EPAR, phy ? (reg | 0x40) : reg);
+	// 0x1a -> EPCR_WEP | EPCR_EPOS | EPCR_ERPRW ?
+	// 0x12 -> EPCR_WEP | EPCR_ERPRW ?
 	sr_write_reg(dev, EPCR, phy ? 0x1a : 0x12);
 
 	ret = wait_phy_eeprom_ready(dev, phy);
-- 
1.8.3.1

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