From: Daniel Walker <dwalker@mvista.com>
Date: Fri, 28 Mar 2008 21:41:27 +0000 (-0700)
Subject: netdev: ehea: locking order correction
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dbbcbb2d95dc4faa3b96d39f78032c85e8745c0c;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

netdev: 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 <dwalker@mvista.com>
Cc: Christoph Raisch <raisch@de.ibm.com>
Cc: Jan-Bernd Themann <themann@de.ibm.com>
Cc: Thomas Klein <tklein@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 4ae65e876487..0cfc7e2ce395 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -2567,14 +2567,14 @@ static int ehea_down(struct net_device *dev)
 	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();