diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/hdpuftrs/hdpu_cpustate.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c index ff51ab67231c..176fe4e09d3f 100644 --- a/drivers/misc/hdpuftrs/hdpu_cpustate.c +++ b/drivers/misc/hdpuftrs/hdpu_cpustate.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/spinlock.h> +#include <linux/smp_lock.h> #include <linux/miscdevice.h> #include <linux/proc_fs.h> #include <linux/hdpu_features.h> @@ -151,7 +152,13 @@ static ssize_t cpustate_write(struct file *file, const char *buf, static int cpustate_open(struct inode *inode, struct file *file) { - return cpustate_get_ref((file->f_flags & O_EXCL)); + int ret; + + lock_kernel(); + ret = cpustate_get_ref((file->f_flags & O_EXCL)); + unlock_kernel(); + + return ret; } static int cpustate_release(struct inode *inode, struct file *file) |