diff options
Diffstat (limited to 'drivers/char/i810_rng.c')
| -rw-r--r-- | drivers/char/i810_rng.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/char/i810_rng.c b/drivers/char/i810_rng.c index 905d8e8cd..7a6718c02 100644 --- a/drivers/char/i810_rng.c +++ b/drivers/char/i810_rng.c @@ -165,6 +165,7 @@ #include <linux/random.h> #include <linux/sysctl.h> #include <linux/miscdevice.h> +#include <linux/smp_lock.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -626,12 +627,16 @@ err_out: static int rng_dev_release (struct inode *inode, struct file *filp) { - if (rng_enable(0) != 0) + lock_kernel(); + if (rng_enable(0) != 0) { + unlock_kernel(); return -EIO; + } spin_lock_bh (&rng_lock); rng_open = 0; spin_unlock_bh (&rng_lock); + unlock_kernel(); return 0; } |