1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/pci/hotplug/cpqphp_sysfs.c b/drivers/pci/hotplug/cpqphp_sysfs.c
index 56215322930a..4cb30447a486 100644
--- a/drivers/pci/hotplug/cpqphp_sysfs.c
+++ b/drivers/pci/hotplug/cpqphp_sysfs.c
@@ -34,10 +34,11 @@
 #include <linux/workqueue.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/debugfs.h>
 #include "cpqphp.h"
 
+static DEFINE_MUTEX(cpqphp_mutex);
 static int show_ctrl (struct controller *ctrl, char *buf)
 {
         char *out = buf;
@@ -147,7 +148,7 @@ static int open(struct inode *inode, struct file *file)
         struct ctrl_dbg *dbg;
         int retval = -ENOMEM;
 
-        lock_kernel();
+        mutex_lock(&cpqphp_mutex);
         dbg = kmalloc(sizeof(*dbg), GFP_KERNEL);
         if (!dbg)
                 goto exit;
@@ -160,7 +161,7 @@ static int open(struct inode *inode, struct file *file)
         file->private_data = dbg;
         retval = 0;
 exit:
-        unlock_kernel();
+        mutex_unlock(&cpqphp_mutex);
         return retval;
 }
 
@@ -169,7 +170,7 @@ static loff_t lseek(struct file *file, loff_t off, int whence)
         struct ctrl_dbg *dbg;
         loff_t new = -1;
 
-        lock_kernel();
+        mutex_lock(&cpqphp_mutex);
         dbg = file->private_data;
 
         switch (whence) {
@@ -181,10 +182,10 @@ static loff_t lseek(struct file *file, loff_t off, int whence)
                 break;
         }
         if (new < 0 || new > dbg->size) {
-                unlock_kernel();
+                mutex_unlock(&cpqphp_mutex);
                 return -EINVAL;
         }
-        unlock_kernel();
+        mutex_unlock(&cpqphp_mutex);
         return (file->f_pos = new);
 }