[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/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index ca839162e4f7..5c550fcac2c4 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -321,7 +321,7 @@ static ssize_t command_file_write(struct file *file, const char __user *ubuff, s
         if (command_data->command)
                 return -EAGAIN;
 
-        cmd = ibmasm_new_command(count);
+        cmd = ibmasm_new_command(command_data->sp, count);
         if (!cmd)
                 return -ENOMEM;