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net: have ipconfig not wait if no dev is available 

previous commit 3fb72f1e6e
makes IP-Config wait for carrier on at least one network device.

Before waiting (predefined value 120s), check that at least one device
was successfully brought up. Otherwise (e.g. buggy bootloader
which does not set the MAC address) there is no point in waiting
for carrier.

Cc: Micha Nelissen <micha@neli.hopto.org>
Cc: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gerlando Falauto 2011-12-19 22:58:04 +00:00 committed by David S. Miller
parent a76c0adf60
commit cd7816d149
1 changed files with 4 additions and 0 deletions
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4
net/ipv4/ipconfig.c
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@ -253,6 +253,10 @@ static int __init ic_open_devs(void)
}
}
/* no point in waiting if we could not bring up at least one device */
if (!ic_first_dev)
goto have_carrier;
/* wait for a carrier on at least one device */
start = jiffies;
while (jiffies - start < msecs_to_jiffies(CONF_CARRIER_TIMEOUT)) {