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authorJesse Brandeburg2006-12-15 10:42:34 +0100
committerJeff Garzik2006-12-26 15:51:30 -0500
commit79f3d3996f06ee339c6f173e573826eccd3914ab (patch)
tree6dd0814371c2389488d3d9d40562adc575c6db75 /drivers/net/e1000
parent15e376b4eed2575b323d575403569ec1b5f63fda (diff)
[PATCH] e1000: No-delay link detection at interface up
Currently after an interface up, the link state is detected 2 seconds later when the first watchdog timer runs. This patch changes that by triggering the hardware to generate a link-change interrupt from the up() function instead. This has the result that the link state gets detected immediately and without races. This has the potential to speed up booting since a normal distribution boot process waits for a link before DHCP is attempted. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/e1000')
-rw-r--r--drivers/net/e1000/e1000_main.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index b06b51a55276..8c4924f1f7ed 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -556,7 +556,8 @@ e1000_up(struct e1000_adapter *adapter)
clear_bit(__E1000_DOWN, &adapter->flags);
- mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
+ /* fire a link change interrupt to start the watchdog */
+ E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC);
return 0;
}