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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 22:50:34 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 22:50:34 +0200 |
| commit | a208f37a465e222218974ab20a31b42b7b4893b2 (patch) | |
| tree | 77c6acdd4be32024330a14f2618b814126ce7a20 /drivers/misc/hdpuftrs/hdpu_cpustate.c | |
| parent | 511d9d34183662aada3890883e860b151d707e22 (diff) | |
| parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
Merge branch 'linus' into x86/x2apic
Diffstat (limited to 'drivers/misc/hdpuftrs/hdpu_cpustate.c')
| -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 ff51ab67231..176fe4e09d3 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) |