2008-03-07 03:35:19

by Daniel Walker

[permalink] [raw]
Subject: [PATCH 3/5] net: ehea: locking order correction

Nested locks always need to be taken in the same order. This change
factors out the ehea_fw_handles.lock to make the locking order
consistent.

Signed-off-by: Daniel Walker <[email protected]>

---
drivers/net/ehea/ehea_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.24/drivers/net/ehea/ehea_main.c
===================================================================
--- linux-2.6.24.orig/drivers/net/ehea/ehea_main.c
+++ linux-2.6.24/drivers/net/ehea/ehea_main.c
@@ -2567,14 +2567,14 @@ static int ehea_down(struct net_device *
if (port->state == EHEA_PORT_DOWN)
return 0;

+ mutex_lock(&ehea_fw_handles.lock);
+
down(&ehea_bcmc_regs.lock);
ehea_drop_multicast_list(dev);
ehea_broadcast_reg_helper(port, H_DEREG_BCMC);

ehea_free_interrupts(dev);

- mutex_lock(&ehea_fw_handles.lock);
-
port->state = EHEA_PORT_DOWN;

ehea_update_bcmc_registrations();

--