[PATCH] tpm: locking fix

Use schedule_work() to avoid down()-in-timer-handler problem.

Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/char/tpm/tpm.h

@@ -77,6 +77,7 @@ struct tpm_chip {
 	struct semaphore buffer_mutex;
 
 	struct timer_list user_read_timer;	/* user needs to claim result */
+	struct work_struct work;
 	struct semaphore tpm_mutex;	/* tpm is processing */
 
 	struct tpm_vendor_specific *vendor;