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sonypi: BKL pushdown 

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
hifive-unleashed-5.1
Arnd Bergmann 2008-05-20 19:16:46 +02:00 committed by Jonathan Corbet
parent 0410e689b1
commit f8f2c79d59
1 changed files with 3 additions and 0 deletions
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3
drivers/char/sonypi.c
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@ -49,6 +49,7 @@
#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>
@ -906,12 +907,14 @@ static int sonypi_misc_release(struct inode *inode, struct file *file)
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;
}