diff options
Diffstat (limited to 'arch/sh/boards/landisk/gio.c')
| -rw-r--r-- | arch/sh/boards/landisk/gio.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/sh/boards/landisk/gio.c b/arch/sh/boards/landisk/gio.c index 17025080db3..0c15b0a50b9 100644 --- a/arch/sh/boards/landisk/gio.c +++ b/arch/sh/boards/landisk/gio.c @@ -14,6 +14,7 @@ */ #include <linux/module.h> #include <linux/init.h> +#include <linux/smp_lock.h> #include <linux/kdev_t.h> #include <linux/cdev.h> #include <linux/fs.h> @@ -32,17 +33,20 @@ static int openCnt; static int gio_open(struct inode *inode, struct file *filp) { int minor; + int ret = -ENOENT; + lock_kernel(); minor = MINOR(inode->i_rdev); if (minor < DEVCOUNT) { if (openCnt > 0) { - return -EALREADY; + ret = -EALREADY; } else { openCnt++; - return 0; + ret = 0; } } - return -ENOENT; + unlock_kernel(); + return ret; } static int gio_close(struct inode *inode, struct file *filp) |