net: bcmgenet: avoid unbalanced enable_irq_wake calls
authorFlorian Fainelli <f.fainelli@gmail.com>
Fri, 10 Oct 2014 17:51:53 +0000 (10:51 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 10 Oct 2014 19:39:15 +0000 (15:39 -0400)
commit083731a8fbe71d83fc908adf137dc98ee352f280
treeafe0ffa0590c5d05b84879387375d2e34b0c3fdb
parentcf377d886f7944a5ccdbd164b89949e13617b096
net: bcmgenet: avoid unbalanced enable_irq_wake calls

Multiple enable_irq_wake() calls will keep increasing the IRQ
wake_depth, which ultimately leads to the following types of
situation:

1) enable Wake-on-LAN interrupt w/o password
2) enable Wake-on-LAN interrupt w/ password
3) enable Wake-on-LAN interrupt w/o password
4) disable Wake-on-LAN interrupt

After step 4), GENET would always wake-up the system no matter what
wake-up device we use, which is not what we want. Fix this by making
sure there are no unbalanced enable_irq_wake() calls.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c