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-rw-r--r--kernel/power/disk.c70
1 files changed, 55 insertions, 15 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 659736508239..0866b163c6bb 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -70,6 +70,35 @@ void hibernation_set_ops(struct platform_hibernation_ops *ops)
70 mutex_unlock(&pm_mutex); 70 mutex_unlock(&pm_mutex);
71} 71}
72 72
73#ifdef CONFIG_PM_DEBUG
74static void hibernation_debug_sleep(void)
75{
76 printk(KERN_INFO "hibernation debug: Waiting for 5 seconds.\n");
77 mdelay(5000);
78}
79
80static int hibernation_testmode(int mode)
81{
82 if (hibernation_mode == mode) {
83 hibernation_debug_sleep();
84 return 1;
85 }
86 return 0;
87}
88
89static int hibernation_test(int level)
90{
91 if (pm_test_level == level) {
92 hibernation_debug_sleep();
93 return 1;
94 }
95 return 0;
96}
97#else /* !CONFIG_PM_DEBUG */
98static int hibernation_testmode(int mode) { return 0; }
99static int hibernation_test(int level) { return 0; }
100#endif /* !CONFIG_PM_DEBUG */
101
73/** 102/**
74 * platform_start - tell the platform driver that we're starting 103 * platform_start - tell the platform driver that we're starting
75 * hibernation 104 * hibernation
@@ -167,6 +196,10 @@ int create_image(int platform_mode)
167 goto Enable_irqs; 196 goto Enable_irqs;
168 } 197 }
169 198
199 if (hibernation_test(TEST_CORE))
200 goto Power_up;
201
202 in_suspend = 1;
170 save_processor_state(); 203 save_processor_state();
171 error = swsusp_arch_suspend(); 204 error = swsusp_arch_suspend();
172 if (error) 205 if (error)
@@ -175,6 +208,7 @@ int create_image(int platform_mode)
175 restore_processor_state(); 208 restore_processor_state();
176 if (!in_suspend) 209 if (!in_suspend)
177 platform_leave(platform_mode); 210 platform_leave(platform_mode);
211 Power_up:
178 /* NOTE: device_power_up() is just a resume() for devices 212 /* NOTE: device_power_up() is just a resume() for devices
179 * that suspended with irqs off ... no overall powerup. 213 * that suspended with irqs off ... no overall powerup.
180 */ 214 */
@@ -211,24 +245,29 @@ int hibernation_snapshot(int platform_mode)
211 if (error) 245 if (error)
212 goto Resume_console; 246 goto Resume_console;
213 247
214 error = platform_pre_snapshot(platform_mode); 248 if (hibernation_test(TEST_DEVICES))
215 if (error)
216 goto Resume_devices; 249 goto Resume_devices;
217 250
251 error = platform_pre_snapshot(platform_mode);
252 if (error || hibernation_test(TEST_PLATFORM))
253 goto Finish;
254
218 error = disable_nonboot_cpus(); 255 error = disable_nonboot_cpus();
219 if (!error) { 256 if (!error) {
220 if (hibernation_mode != HIBERNATION_TEST) { 257 if (hibernation_test(TEST_CPUS))
221 in_suspend = 1; 258 goto Enable_cpus;
222 error = create_image(platform_mode); 259
223 /* Control returns here after successful restore */ 260 if (hibernation_testmode(HIBERNATION_TEST))
224 } else { 261 goto Enable_cpus;
225 printk("swsusp debug: Waiting for 5 seconds.\n"); 262
226 mdelay(5000); 263 error = create_image(platform_mode);
227 } 264 /* Control returns here after successful restore */
228 } 265 }
266 Enable_cpus:
229 enable_nonboot_cpus(); 267 enable_nonboot_cpus();
230 Resume_devices: 268 Finish:
231 platform_finish(platform_mode); 269 platform_finish(platform_mode);
270 Resume_devices:
232 device_resume(); 271 device_resume();
233 Resume_console: 272 Resume_console:
234 resume_console(); 273 resume_console();
@@ -406,11 +445,12 @@ int hibernate(void)
406 if (error) 445 if (error)
407 goto Finish; 446 goto Finish;
408 447
409 if (hibernation_mode == HIBERNATION_TESTPROC) { 448 if (hibernation_test(TEST_FREEZER))
410 printk("swsusp debug: Waiting for 5 seconds.\n");
411 mdelay(5000);
412 goto Thaw; 449 goto Thaw;
413 } 450
451 if (hibernation_testmode(HIBERNATION_TESTPROC))
452 goto Thaw;
453
414 error = hibernation_snapshot(hibernation_mode == HIBERNATION_PLATFORM); 454 error = hibernation_snapshot(hibernation_mode == HIBERNATION_PLATFORM);
415 if (in_suspend && !error) { 455 if (in_suspend && !error) {
416 unsigned int flags = 0; 456 unsigned int flags = 0;