diff options
| author | Alexandre Bounine <alexandre.bounine@idt.com> | 2016-03-22 14:26:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-22 15:36:02 -0700 |
| commit | a7b4c636d83034f0e89d58651ef2e9b96564489a (patch) | |
| tree | 19e8ec4da76c040166f31a1d42265af5605dcb34 /include/linux/rio.h | |
| parent | b7dfca8bd446721cbc23f4a7cf3c407eb42175dc (diff) | |
rapidio: add lock protection for doorbell list
Add lock protection around doorbell list handling to prevent list
corruption on SMP platforms.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/rio.h')
| -rw-r--r-- | include/linux/rio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/rio.h b/include/linux/rio.h index f833773cdc68..948f60550ae5 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -248,6 +248,7 @@ enum rio_phy_type { * @node: Node in global list of master ports * @nnode: Node in network list of master ports * @net: RIO net this mport is attached to + * @lock: lock to synchronize lists manipulations * @iores: I/O mem resource that this master port interface owns * @riores: RIO resources that this master port interfaces owns * @inb_msg: RIO inbound message event descriptors @@ -271,6 +272,7 @@ struct rio_mport { struct list_head node; /* node in global list of ports */ struct list_head nnode; /* node in net list of ports */ struct rio_net *net; /* RIO net this mport is attached to */ + struct mutex lock; struct resource iores; struct resource riores[RIO_MAX_MPORT_RESOURCES]; struct rio_msg inb_msg[RIO_MAX_MBOX]; |