[netdrvr] atl1e: Don't take the mdio_lock in atl1e_probe
authorMatthew Wilcox <matthew@wil.cx>
Tue, 12 Aug 2008 13:13:14 +0000 (07:13 -0600)
committerJeff Garzik <jgarzik@redhat.com>
Wed, 24 Sep 2008 22:49:01 +0000 (18:49 -0400)
commitf382a0a8e9403c6d7f8b2cfa21e41fefb5d0c9bd
tree2fa31ffb8dc9c32d5e497309c3388e57f19b9e95
parent70666c71957b62c8e9ea5c0d999a4bfd214c80d2
[netdrvr] atl1e: Don't take the mdio_lock in atl1e_probe

Lockdep warns about the mdio_lock taken with interrupts enabled then later
taken from interrupt context.  Initially, I considered changing these
to spin_lock_irq/spin_unlock_irq, but then I looked at atl1e_phy_init()
and saw that it calls msleep().  Sleeping while holding a spinlock is
not allowed either.

In the probe path, we haven't registered the interrupt handler, so
it can't poke at this card yet.  It's before we call register_netdev(),
so I don't think any other threads can reach this card either.  If I'm
right, we don't need a spinlock at all.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
drivers/net/atl1e/atl1e_main.c