linux-kernel - Re: kernel 2.6.33.7 (the highest version with RT patch) does not work with b44 ethernet controller

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Message-ID: <1288880413.2659.103.camel@edumazet-laptop>
Date:	Thu, 04 Nov 2010 15:20:13 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Wojtek Zabolotny <W.Zabolotny@...a.pw.edu.pl>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: kernel 2.6.33.7 (the highest version with RT patch) does not
 work with b44 ethernet controller

Le jeudi 04 novembre 2010 à 15:06 +0100, Wojtek Zabolotny a écrit :
> I have updated my RT-kernel to version 2.6.33.7-rt29 (the newest RT 
> version),
> and I've found that I've lost Ethernet connectivity.
> In the logs I could see messages like this:
> Nov  2 09:30:28 wzlaphp kernel: b44: eth0: powering down PHY
> Nov  2 09:30:28 wzlaphp kernel: b44: eth0: BUG!  Timeout waiting for bit 
> 00000002 of register 42c to clear.
> Nov  2 09:30:32 wzlaphp kernel: b44: eth0: BUG!  Timeout waiting for bit 
> 80000000 of register 428 to clear.
> 
> I was not sure whether the probem is related to the 2.6.33.7 kernel 
> itself or with the RT patch, so I've compiled also the unpatched version 
> of 2.6.33.7
> 
> It is also not able to communicate with my Ethernet controller, but now 
> the error messages are different:
> 
> b44 0000:02:0e.0: PCI INT A disabled
> b44 0000:02:0e.0: BAR 0: set to [mem 0xf4108000-0xf4109fff] (PCI address 
> [0xf4108000-0xf4109fff]
> b44 0000:02:0e.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
> ssb: Core 0 found: Fast Ethernet (cc 0x806, rev 0x07, vendor 0x4243)
> ssb: Core 1 found: V90 (cc 0x807, rev 0x03, vendor 0x4243)
> ssb: Core 2 found: PCI (cc 0x804, rev 0x0A, vendor 0x4243)
> ssb: Sonics Silicon Backplane found on PCI device 0000:02:0e.0
> b44.c:v2.0
> b44: Invalid MAC address found in EEPROM
> b44 ssb1:0: Problem fetching invariants of chip, aborting.
> b44: probe of ssb1:0 failed with error -22
> 
> Now I'm using the old 2.6.33.5-rt23 kernel, and everything works perfectly.
> 

Could you print the Invalid MAC address ?


diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index c6e8631..b1b9a2b 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -2092,7 +2092,7 @@ static int __devinit b44_get_invariants(struct b44 *bp)
 	memcpy(bp->dev->dev_addr, addr, 6);
 
 	if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
-		pr_err("Invalid MAC address found in EEPROM\n");
+		pr_err("Invalid MAC address %pM found in EEPROM\n", bp->dev->dev_addr);
 		return -EINVAL;
 	}
 


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