diff options
Diffstat (limited to 'kernel/power/user.c')
-rw-r--r-- | kernel/power/user.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index 3f1539fbe48a..0ef5e4ba39e5 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c | |||
@@ -19,6 +19,7 @@ | |||
19 | #include <linux/swapops.h> | 19 | #include <linux/swapops.h> |
20 | #include <linux/pm.h> | 20 | #include <linux/pm.h> |
21 | #include <linux/fs.h> | 21 | #include <linux/fs.h> |
22 | #include <linux/cpu.h> | ||
22 | 23 | ||
23 | #include <asm/uaccess.h> | 24 | #include <asm/uaccess.h> |
24 | 25 | ||
@@ -139,12 +140,15 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, | |||
139 | if (data->frozen) | 140 | if (data->frozen) |
140 | break; | 141 | break; |
141 | down(&pm_sem); | 142 | down(&pm_sem); |
142 | disable_nonboot_cpus(); | 143 | error = disable_nonboot_cpus(); |
143 | if (freeze_processes()) { | 144 | if (!error) { |
144 | thaw_processes(); | 145 | error = freeze_processes(); |
145 | enable_nonboot_cpus(); | 146 | if (error) { |
146 | error = -EBUSY; | 147 | thaw_processes(); |
148 | error = -EBUSY; | ||
149 | } | ||
147 | } | 150 | } |
151 | enable_nonboot_cpus(); | ||
148 | up(&pm_sem); | 152 | up(&pm_sem); |
149 | if (!error) | 153 | if (!error) |
150 | data->frozen = 1; | 154 | data->frozen = 1; |