pm_qos_params: BKL pushdown
[jmc: added <linux/smp_lock.h>]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/kernel/pm_qos_params.c b/kernel/pm_qos_params.c
index 0afe32b..8cb7570 100644
--- a/kernel/pm_qos_params.c
+++ b/kernel/pm_qos_params.c
@@ -29,6 +29,7 @@
#include <linux/pm_qos_params.h>
#include <linux/sched.h>
+#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/time.h>
@@ -358,15 +359,19 @@
int ret;
long pm_qos_class;
+ lock_kernel();
pm_qos_class = find_pm_qos_object_by_minor(iminor(inode));
if (pm_qos_class >= 0) {
filp->private_data = (void *)pm_qos_class;
sprintf(name, "process_%d", current->pid);
ret = pm_qos_add_requirement(pm_qos_class, name,
PM_QOS_DEFAULT_VALUE);
- if (ret >= 0)
+ if (ret >= 0) {
+ unlock_kernel();
return 0;
+ }
}
+ unlock_kernel();
return -EPERM;
}