[PATCH] netpoll: Remove 4s sleep during carrier detection

[Breno Leitao]

This patch proposes to remove the msleep(4s) during netpoll_setup() if
the carrier appears instantly.

Modern NICs do not seem to have this bouncing problem anymore, and this
sleep slows down the machine boot unnecessarily

Reported-by: Michael van der Westhuizen <rmikey@xxxxxxxx>
Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx>
---
 net/core/netpoll.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 9be762e1d042..6f45aeaf3da0 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -704,15 +704,6 @@ int netpoll_setup(struct netpoll *np)
 			msleep(1);
 		}
 
-		/* If carrier appears to come up instantly, we don't
-		 * trust it and pause so that we don't pump all our
-		 * queued console messages into the bitbucket.
-		 */
-
-		if (time_before(jiffies, atleast)) {
-			np_notice(np, "carrier detect appears untrustworthy, waiting 4 seconds\n");
-			msleep(4000);
-		}
 		rtnl_lock();
 	}
 
-- 
2.30.2