From: Mikhail Zolotaryov <lebon@lebon•org.ua>
To: netdev@vger•kernel.org
Subject: [PATCH] powerpc 4xx EMAC driver: device name reported on timeout is not correct
Date: Fri, 20 Mar 2009 10:28:02 +0200 [thread overview]
Message-ID: <49C35392.7030906@lebon.org.ua> (raw)
[-- Attachment #1: Type: text/plain, Size: 832 bytes --]
Hi,
IBM EMAC driver performs device reset (drivers/net/ibm_newemac/core.c:
emac_probe() -> emac_init_phy() -> emac_reset()) before registering
appropriate net_device (emac_probe() -> register_netdev()), so
net_device name contains raw format string during EMAC reset ("eth%d").
If the case of reset timeout, emac_report_timeout_error() function is
called to report an error. The problem is this function uses net_device
name to report device related, which is not correct, as a result in the
kernel log buffer we see:
eth%d: reset timeout
The solution is to print device_node full_name instead. After applying
the patch proposed, error string is like the following:
/plb/opb/ethernet@ef600e00: reset timeout
Signed-off-by: Mikhail Zolotaryov <lebon@lebon•org.ua>
Acked-by: Benjamin Herrenschmidt <benh@kernel•crashing.org>
[-- Attachment #2: emac_report_timeout_error.patch --]
[-- Type: text/plain, Size: 441 bytes --]
--- linux-2.6/drivers/net/ibm_newemac/core.c.orig 2009-03-10 20:24:12.000000000 +0200
+++ linux-2.6/drivers/net/ibm_newemac/core.c 2009-03-10 20:29:12.000000000 +0200
@@ -134,7 +134,7 @@
EMAC_FTR_440EP_PHY_CLK_FIX))
DBG(dev, "%s" NL, error);
else if (net_ratelimit())
- printk(KERN_ERR "%s: %s\n", dev->ndev->name, error);
+ printk(KERN_ERR "%s: %s\n", dev->ofdev->node->full_name, error);
}
/* EMAC PHY clock workaround:
reply other threads:[~2009-03-20 8:45 UTC|newest]
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