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netpoll: Introduce netpoll_carrier_timeout kernel option

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Some PHYs require longer timeouts for carrier detection, and
auto-negotiation process may take indefinite amount of time.

It may be inconvenient to force longer timeouts for sane PHYs,
so let's introduce a kernel command line option.

Since we're using module_param(), the option also can be
changed in runtime.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anton Vorontsov
2009-07-08 11:10:56 -07:00
committed by David S. Miller
parent 34701fde8f
commit bff38771e1
2 changed files with 10 additions and 1 deletions
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5
Documentation/kernel-parameters.txt
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@@ -1531,6 +1531,11 @@ and is between 256 and 4096 characters. It is defined in the file
symbolic names: lapic and ioapic
Example: nmi_watchdog=2 or nmi_watchdog=panic,lapic
netpoll.carrier_timeout=
[NET] Specifies amount of time (in seconds) that
netpoll should wait for a carrier. By default netpoll
waits 4 seconds.
no387 [BUGS=X86-32] Tells the kernel to use the 387 maths
emulation library even if a 387 maths coprocessor
is present.