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-rw-r--r--kernel/power/disk.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index d79feeb45459..f5079231383e 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -30,6 +30,22 @@ dev_t swsusp_resume_device;
30sector_t swsusp_resume_block; 30sector_t swsusp_resume_block;
31 31
32/** 32/**
33 * platform_prepare - prepare the machine for hibernation using the
34 * platform driver if so configured and return an error code if it fails
35 */
36
37static inline int platform_prepare(void)
38{
39 int error = 0;
40
41 if (pm_disk_mode == PM_DISK_PLATFORM) {
42 if (pm_ops && pm_ops->prepare)
43 error = pm_ops->prepare(PM_SUSPEND_DISK);
44 }
45 return error;
46}
47
48/**
33 * power_down - Shut machine down for hibernate. 49 * power_down - Shut machine down for hibernate.
34 * @mode: Suspend-to-disk mode 50 * @mode: Suspend-to-disk mode
35 * 51 *
@@ -91,9 +107,15 @@ static int prepare_processes(void)
91 goto thaw; 107 goto thaw;
92 } 108 }
93 109
110 error = platform_prepare();
111 if (error)
112 goto thaw;
113
94 /* Free memory before shutting down devices. */ 114 /* Free memory before shutting down devices. */
95 if (!(error = swsusp_shrink_memory())) 115 if (!(error = swsusp_shrink_memory()))
96 return 0; 116 return 0;
117
118 platform_finish();
97thaw: 119thaw:
98 thaw_processes(); 120 thaw_processes();
99enable_cpus: 121enable_cpus: