lib8390: Fix locking in ei_poll (poll controller)

This lockdep warning:
  =================================
  [ INFO: inconsistent lock state ]
  2.6.27-rc7 #3
  ---------------------------------
  inconsistent {in-softirq-W} -> {softirq-on-W} usage.
  syslogd/2474 [HC0[0]:SC0[0]:HE1:SE1] takes:
   (_xmit_ETHER#2){-+..}, at: [<c0265562>] netpoll_send_skb+0x132/0x190
  ...

is caused by unconditional local_irq_disable()/local_irq_enable() in
disable_irq_lockdep()/enable_irq_lockdep() used by __ei_poll(). Since
netconsole/netpoll always calls dev->poll_controller() with local irqs
disabled, disable_irq()/enable_irq() instead is safe and enough (like
e.g. in 3c509 or 8139xx drivers).

Reported-and-tested-by: Bernard Pidoux F6BVP <f6bvp@free.fr>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/lib8390.c b/drivers/net/lib8390.c
index 00d59ab2f8ac98ecf2cfec78b59cfb0626ae4dd8..f80dcc11fe26bad7f594fff1407d0e036fc84935 100644 (file)
--- a/drivers/net/lib8390.c
+++ b/drivers/net/lib8390.c
@@ -530,9 +530,9 @@ static irqreturn_t __ei_interrupt(int irq, void *dev_id)
 #ifdef CONFIG_NET_POLL_CONTROLLER
 static void __ei_poll(struct net_device *dev)
 {
-       disable_irq_lockdep(dev->irq);
+       disable_irq(dev->irq);
        __ei_interrupt(dev->irq, dev);
-       enable_irq_lockdep(dev->irq);
+       enable_irq(dev->irq);
 }
 #endif