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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-15 07:44:51 +0200
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-15 07:44:51 +0200
commit43d2548bb2ef7e6d753f91468a746784041e522d (patch)
tree77d13fcd48fd998393abb825ec36e2b732684a73 /drivers/char/hw_random
parentpowerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES (diff)
parentMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm (diff)
downloadlinux-43d2548bb2ef7e6d753f91468a746784041e522d.tar.xz
linux-43d2548bb2ef7e6d753f91468a746784041e522d.zip
Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-build
Manual fixup of: arch/powerpc/Kconfig
Diffstat (limited to 'drivers/char/hw_random')
-rw-r--r--drivers/char/hw_random/core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 662d60e44e9a..e5d583c84e4f 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -37,6 +37,7 @@
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/sched.h>
+#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/delay.h>
@@ -86,6 +87,7 @@ static int rng_dev_open(struct inode *inode, struct file *filp)
return -EINVAL;
if (filp->f_mode & FMODE_WRITE)
return -EINVAL;
+ cycle_kernel_lock();
return 0;
}