diff options
author | Kumar Gala <galak@kernel.crashing.org> | 2007-02-12 23:57:21 -0600 |
---|---|---|
committer | Kumar Gala <galak@kernel.crashing.org> | 2007-02-12 23:57:21 -0600 |
commit | 54c66f6d781e03dc0b23956234963c4911e6d1c0 (patch) | |
tree | 40619a66ae6d8703a57bf681d087ffeabbffd346 /kernel/power/disk.c | |
parent | 8ce0a7df6e6117d8814e976d4b7ce6a6b2c9cf93 (diff) | |
parent | 17e0e27020d028a790d97699aff85a43af5be472 (diff) |
Merge branch 'master' into 85xx
Diffstat (limited to 'kernel/power/disk.c')
-rw-r--r-- | kernel/power/disk.c | 115 |
1 files changed, 58 insertions, 57 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 88fc5d7ac73..406b20adb27 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -87,52 +87,24 @@ static inline void platform_finish(void) } } +static void unprepare_processes(void) +{ + thaw_processes(); + pm_restore_console(); +} + static int prepare_processes(void) { int error = 0; pm_prepare_console(); - - error = disable_nonboot_cpus(); - if (error) - goto enable_cpus; - if (freeze_processes()) { error = -EBUSY; - goto thaw; + unprepare_processes(); } - - if (pm_disk_mode == PM_DISK_TESTPROC) { - printk("swsusp debug: Waiting for 5 seconds.\n"); - mdelay(5000); - goto thaw; - } - - error = platform_prepare(); - if (error) - goto thaw; - - /* Free memory before shutting down devices. */ - if (!(error = swsusp_shrink_memory())) - return 0; - - platform_finish(); - thaw: - thaw_processes(); - enable_cpus: - enable_nonboot_cpus(); - pm_restore_console(); return error; } -static void unprepare_processes(void) -{ - platform_finish(); - thaw_processes(); - enable_nonboot_cpus(); - pm_restore_console(); -} - /** * pm_suspend_disk - The granpappy of hibernation power management. * @@ -150,29 +122,45 @@ int pm_suspend_disk(void) if (error) return error; - if (pm_disk_mode == PM_DISK_TESTPROC) - return 0; + if (pm_disk_mode == PM_DISK_TESTPROC) { + printk("swsusp debug: Waiting for 5 seconds.\n"); + mdelay(5000); + goto Thaw; + } + /* Free memory before shutting down devices. */ + error = swsusp_shrink_memory(); + if (error) + goto Thaw; + + error = platform_prepare(); + if (error) + goto Thaw; suspend_console(); error = device_suspend(PMSG_FREEZE); if (error) { - resume_console(); - printk("Some devices failed to suspend\n"); - goto Thaw; + printk(KERN_ERR "PM: Some devices failed to suspend\n"); + goto Resume_devices; } + error = disable_nonboot_cpus(); + if (error) + goto Enable_cpus; if (pm_disk_mode == PM_DISK_TEST) { printk("swsusp debug: Waiting for 5 seconds.\n"); mdelay(5000); - goto Done; + goto Enable_cpus; } pr_debug("PM: snapshotting memory.\n"); in_suspend = 1; - if ((error = swsusp_suspend())) - goto Done; + error = swsusp_suspend(); + if (error) + goto Enable_cpus; if (in_suspend) { + enable_nonboot_cpus(); + platform_finish(); device_resume(); resume_console(); pr_debug("PM: writing image.\n"); @@ -188,7 +176,10 @@ int pm_suspend_disk(void) } swsusp_free(); - Done: + Enable_cpus: + enable_nonboot_cpus(); + Resume_devices: + platform_finish(); device_resume(); resume_console(); Thaw: @@ -237,19 +228,28 @@ static int software_resume(void) pr_debug("PM: Checking swsusp image.\n"); - if ((error = swsusp_check())) + error = swsusp_check(); + if (error) goto Done; pr_debug("PM: Preparing processes for restore.\n"); - if ((error = prepare_processes())) { + error = prepare_processes(); + if (error) { swsusp_close(); goto Done; } + error = platform_prepare(); + if (error) { + swsusp_free(); + goto Thaw; + } + pr_debug("PM: Reading swsusp image.\n"); - if ((error = swsusp_read())) { + error = swsusp_read(); + if (error) { swsusp_free(); goto Thaw; } @@ -257,21 +257,22 @@ static int software_resume(void) pr_debug("PM: Preparing devices for restore.\n"); suspend_console(); - if ((error = device_suspend(PMSG_PRETHAW))) { - resume_console(); - printk("Some devices failed to suspend\n"); - swsusp_free(); - goto Thaw; - } + error = device_suspend(PMSG_PRETHAW); + if (error) + goto Free; - mb(); + error = disable_nonboot_cpus(); + if (!error) + swsusp_resume(); - pr_debug("PM: Restoring saved image.\n"); - swsusp_resume(); - pr_debug("PM: Restore failed, recovering.n"); + enable_nonboot_cpus(); + Free: + swsusp_free(); + platform_finish(); device_resume(); resume_console(); Thaw: + printk(KERN_ERR "PM: Restore failed, recovering.\n"); unprepare_processes(); Done: /* For success case, the suspend path will release the lock */ |