[PATCH] uml: mconsole locking

Locking fixes.  Locking was totally lacking for the mconsole_devices, which
got a spin lock, and the unplugged pages data, which got a mutex.

The locking of the mconsole console output code was confused.  Now, the
console_lock (renamed to client_lock) protects the clients list.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index 1e82430b8444..fe400acc9751 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -64,6 +64,7 @@ static struct line_driver driver = {
         .symlink_from           = "serial",
         .symlink_to             = "tts",
         .mc  = {
+                .list           = LIST_HEAD_INIT(driver.mc.list),
                 .name           = "ssl",
                 .config         = ssl_config,
                 .get_config     = ssl_get_config,