[PATCH] ibmasm driver: fix race in command refcount logic

This patch fixes a race in the command reference counting logic by putting
spinlocks around kobject_put() in the command_put function.

- Also added debug messages.

- Changed a memcpy to memcpy_fromio since we are reading from io space.

Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/misc/ibmasm/r_heartbeat.c b/drivers/misc/ibmasm/r_heartbeat.c
index 93d9c1b2ad6f..f8fdb2d5417e 100644
--- a/drivers/misc/ibmasm/r_heartbeat.c
+++ b/drivers/misc/ibmasm/r_heartbeat.c
@@ -63,7 +63,7 @@ int ibmasm_start_reverse_heartbeat(struct service_processor *sp, struct reverse_
         int times_failed = 0;
         int result = 1;
 
-        cmd = ibmasm_new_command(sizeof rhb_dot_cmd);
+        cmd = ibmasm_new_command(sp, sizeof rhb_dot_cmd);
         if (!cmd)
                 return -ENOMEM;