sonypi: BKL pushdown

#include <linux/err.h>

#include <linux/kfifo.h>

#include <linux/platform_device.h>

#include <linux/smp_lock.h>

#include <asm/uaccess.h>

#include <asm/io.h>

static int sonypi_misc_open(struct inode *inode, struct file *file)

{

	lock_kernel();

	mutex_lock(&sonypi_device.lock);

	/* Flush input queue on first open */

	if (!sonypi_device.open_count)

		kfifo_reset(sonypi_device.fifo);

	sonypi_device.open_count++;

	mutex_unlock(&sonypi_device.lock);

	unlock_kernel();

	return 0;

}