tree 07c71314d189e5d0688d97f1cd2b3b504eb4892b
parent ff01b9163655ace76b29b7ff2f56b25c32f795da
author Maciej Sosnowski <maciej.sosnowski@intel.com> 1233646017 -0800
committer David S. Miller <davem@davemloft.net> 1233646017 -0800

dca: redesign locks to fix deadlocks

Change spin_locks to irqsave to prevent dead-locks.
Protect adding and deleting to/from dca_providers list.
Drop the lock during dca_sysfs_add_req() and dca_sysfs_remove_req() calls
as they might sleep (use GFP_KERNEL allocation).

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>