[PATCH] mdiobus_register: check bus not being NULL before dereferencing it.

[Uwe Kleine-König]

Signed-off-by: Uwe Kleine-König <[EMAIL PROTECTED]>
Cc: Andy Fleming <[EMAIL PROTECTED]>
---
 drivers/net/phy/mdio_bus.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index fc2f0e6..7ff55bb 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -49,13 +49,13 @@ int mdiobus_register(struct mii_bus *bus)
        int i;
        int err = 0;
 
-       spin_lock_init(&bus->mdio_lock);
-
        if (NULL == bus || NULL == bus->name ||
                        NULL == bus->read ||
                        NULL == bus->write)
                return -EINVAL;
 
+       spin_lock_init(&bus->mdio_lock);
+
        if (bus->reset)
                bus->reset(bus);
 
-- 
1.5.3.4

-
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