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sony-laptop: BKL pushdown

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2008-05-20 19:16:45 +02:00 committed by Jonathan Corbet
parent 9edca64b72
commit 0410e689b1
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/sony-laptop.c
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@ -46,6 +46,7 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/types.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
@ -1927,8 +1928,10 @@ static int sonypi_misc_release(struct inode *inode, struct file *file)
static int sonypi_misc_open(struct inode *inode, struct file *file)
{
/* Flush input queue on first open */
lock_kernel();
if (atomic_inc_return(&sonypi_compat.open_count) == 1)
kfifo_reset(sonypi_compat.fifo);
unlock_kernel();
return 0;
}