[PATCH] ibmasm driver: don't use previously freed pointer

[Max Asbock <masbock@us.ibm.com>]

ibmasm driver:
Fix the command_put() function which uses a pointer for a spinlock that
can be freed before dereferencing it.

Signed-off-by: Max Asbock masbock@us.ibm.com

---

diff -burpN linux-2.6.16-rc1/drivers/misc/ibmasm/ibmasm.h linux-2.6.16-rc1.ibmasm/drivers/misc/ibmasm/ibmasm.h
--- linux-2.6.16-rc1/drivers/misc/ibmasm/ibmasm.h	2006-02-01 11:50:01.000000000 -0800
+++ linux-2.6.16-rc1.ibmasm/drivers/misc/ibmasm/ibmasm.h	2006-02-03 13:57:42.000000000 -0800
@@ -101,10 +101,11 @@ struct command {
 static inline void command_put(struct command *cmd)
 {
 	unsigned long flags;
+	spinlock_t *lock = cmd->lock;
 
-	spin_lock_irqsave(cmd->lock, flags);
+	spin_lock_irqsave(lock, flags);
         kobject_put(&cmd->kobj);
-	spin_unlock_irqrestore(cmd->lock, flags);
+	spin_unlock_irqrestore(lock, flags);
 }
 
 static inline void command_get(struct command *cmd)


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