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path: root/drivers/char/nvram.c
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Diffstat (limited to 'drivers/char/nvram.c')
-rw-r--r--drivers/char/nvram.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 98dec380af49..39f6357e3b5d 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -333,12 +333,14 @@ nvram_ioctl(struct inode *inode, struct file *file,
static int
nvram_open(struct inode *inode, struct file *file)
{
+ lock_kernel();
spin_lock(&nvram_state_lock);
if ((nvram_open_cnt && (file->f_flags & O_EXCL)) ||
(nvram_open_mode & NVRAM_EXCL) ||
((file->f_mode & 2) && (nvram_open_mode & NVRAM_WRITE))) {
spin_unlock(&nvram_state_lock);
+ unlock_kernel();
return -EBUSY;
}
@@ -349,6 +351,7 @@ nvram_open(struct inode *inode, struct file *file)
nvram_open_cnt++;
spin_unlock(&nvram_state_lock);
+ unlock_kernel();
return 0;
}
@@ -440,7 +443,7 @@ nvram_init(void)
/* First test whether the driver should init at all */
if (!CHECK_DRIVER_INIT())
- return -ENXIO;
+ return -ENODEV;
ret = misc_register(&nvram_dev);
if (ret) {