uml-random: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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@ -7,6 +7,7 @@
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* of the GNU General Public License, incorporated herein by reference.
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*/
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#include <linux/sched.h>
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#include <linux/smp_lock.h>
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#include <linux/module.h>
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#include <linux/fs.h>
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#include <linux/interrupt.h>
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@ -33,6 +34,8 @@ static DECLARE_WAIT_QUEUE_HEAD(host_read_wait);
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static int rng_dev_open (struct inode *inode, struct file *filp)
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{
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cycle_kernel_lock();
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/* enforce read-only access to this chrdev */
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if ((filp->f_mode & FMODE_READ) == 0)
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return -EINVAL;
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