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authorArnd Bergmann <arnd@arndb.de>2008-05-20 13:16:45 -0400
committerJonathan Corbet <corbet@lwn.net>2008-07-02 17:06:25 -0400
commit0410e689b19b6ca010a6a44abfa820968ae15733 (patch)
treeab03276fbc49d1d27d4a7bd4e32e9c2a245fd1df /drivers/misc/sony-laptop.c
parent9edca64b724db74373f0c9ef7cb044a5f221a4a3 (diff)
sony-laptop: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/misc/sony-laptop.c')
-rw-r--r--drivers/misc/sony-laptop.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 00e48e2a9c11..60775be22822 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -46,6 +46,7 @@
46#include <linux/module.h> 46#include <linux/module.h>
47#include <linux/moduleparam.h> 47#include <linux/moduleparam.h>
48#include <linux/init.h> 48#include <linux/init.h>
49#include <linux/smp_lock.h>
49#include <linux/types.h> 50#include <linux/types.h>
50#include <linux/backlight.h> 51#include <linux/backlight.h>
51#include <linux/platform_device.h> 52#include <linux/platform_device.h>
@@ -1927,8 +1928,10 @@ static int sonypi_misc_release(struct inode *inode, struct file *file)
1927static int sonypi_misc_open(struct inode *inode, struct file *file) 1928static int sonypi_misc_open(struct inode *inode, struct file *file)
1928{ 1929{
1929 /* Flush input queue on first open */ 1930 /* Flush input queue on first open */
1931 lock_kernel();
1930 if (atomic_inc_return(&sonypi_compat.open_count) == 1) 1932 if (atomic_inc_return(&sonypi_compat.open_count) == 1)
1931 kfifo_reset(sonypi_compat.fifo); 1933 kfifo_reset(sonypi_compat.fifo);
1934 unlock_kernel();
1932 return 0; 1935 return 0;
1933} 1936}
1934 1937