netdev - [PATCH] r8169: fix broken register writes

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Message-ID: <20100328003143.GA8501@electric-eye.fr.zoreil.com>
Date:	Sun, 28 Mar 2010 01:31:43 +0100
From:	François Romieu <romieu@...zoreil.com>
To:	David Miller <davem@...emloft.net>
Cc:	ben@...adent.org.uk, timo.teras@....fi, ivecera@...hat.com,
	netdev@...r.kernel.org
Subject: [PATCH] r8169: fix broken register writes

This is quite similar to b39fe41f481d20c201012e4483e76c203802dda7
though said registers are not even documented as 64-bit registers
- as opposed to the initial TxDescStartAddress ones - but as single
bytes which must be combined into 32 bits at the MMIO read/write
level before being merged into a 64 bit logical entity.

Credits go to Ben Hutchings <ben@...adent.org.uk> for the MAR
registers (aka "multicast is broken for ages on ARM) and to
Timo Teräs <timo.teras@....fi> for the MAC registers.

Signed-off-by: Francois Romieu <romieu@...zoreil.com>
---
 drivers/net/r8169.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 9d3ebf3..966407c 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2821,8 +2821,8 @@ static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
 	spin_lock_irq(&tp->lock);
 
 	RTL_W8(Cfg9346, Cfg9346_Unlock);
-	RTL_W32(MAC0, low);
 	RTL_W32(MAC4, high);
+	RTL_W32(MAC0, low);
 	RTL_W8(Cfg9346, Cfg9346_Lock);
 
 	spin_unlock_irq(&tp->lock);
@@ -4754,8 +4754,8 @@ static void rtl_set_rx_mode(struct net_device *dev)
 		mc_filter[1] = swab32(data);
 	}
 
-	RTL_W32(MAR0 + 0, mc_filter[0]);
 	RTL_W32(MAR0 + 4, mc_filter[1]);
+	RTL_W32(MAR0 + 0, mc_filter[0]);
 
 	RTL_W32(RxConfig, tmp);
 
-- 
1.6.6.1

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