hw_random core is completely serialized with rng_mutex. No need for
the cycle_kernel_lock() magic.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
---
 drivers/char/hw_random/core.c |    1 -
 1 file changed, 1 deletion(-)

Index: linux-2.6-tip/drivers/char/hw_random/core.c
===================================================================
--- linux-2.6-tip.orig/drivers/char/hw_random/core.c
+++ linux-2.6-tip/drivers/char/hw_random/core.c
@@ -87,7 +87,6 @@ static int rng_dev_open(struct inode *in
 		return -EINVAL;
 	if (filp->f_mode & FMODE_WRITE)
 		return -EINVAL;
-	cycle_kernel_lock();
 	return 0;
 }