Re: [PATCH 2.6.15-rc2] b44: missing netif_wake_queue() in b44_open()

[Mark Lord <lkml@rtr.ca>]

Jeff Garzik wrote:
> Nope.   There's no need to wake the queue.
>
> 1) Use netif_start_queue() rather than netif_wake_queue(), in b44_open()
>
> 2) OTOH, netif_wake_queue() appears to be missing from the end of 
> b44_resume(), which has highly similar code.

Ah. Thanks, Jeff!
I guess the e100.c driver was a bad example to copy here.

Fixed, tested, still works fine.
Patch now updated.

> > > This patch fixes a problem plaguing Dell notebooks with
> > > built-in b44 ethernet:  The driver refuses to transmit packets
> > > of any kind until after the first 5-second tx_timeout occurs.
> > > This bug causes DHCP negotiation to fail (timeout) during
> > > installation of Ubuntu Linux.
> > >
> > > One-liner fix.  Please review (and apply if you like it).

Signed-off-by:  Mark Lord <lkml@rtr.ca>


--- linux-2.6.15-rc2/drivers/net/b44.c  2005-11-19 22:25:03.000000000 -0500
+++ linux/drivers/net/b44.c     2005-11-24 15:20:47.000000000 -0500
@@ -1417,6 +1417,7 @@
        add_timer(&bp->timer);

        b44_enable_ints(bp);
+       netif_start_queue(dev); /* prevent the initial tx_timeout() we otherwise see */
 out:
        return err;
 }
@@ -2113,6 +2114,7 @@
        add_timer(&bp->timer);

        b44_enable_ints(bp);
+       netif_wake_queue(dev);
        return 0;
 }

--- linux-2.6.15-rc2/drivers/net/b44.c	2005-11-19 22:25:03.000000000 -0500
+++ linux/drivers/net/b44.c	2005-11-24 15:20:47.000000000 -0500
@@ -1417,6 +1417,7 @@
 	add_timer(&bp->timer);
 
 	b44_enable_ints(bp);
+	netif_start_queue(dev);	/* prevent the initial tx_timeout() we otherwise see */
 out:
 	return err;
 }
@@ -2113,6 +2114,7 @@
 	add_timer(&bp->timer);
 
 	b44_enable_ints(bp);
+	netif_wake_queue(dev);
 	return 0;
 }