[PATCH] swsusp: switch pm_message_t to struct

This adds type-checking to pm_message_t, so that people can't confuse it
with int or u32.  It also allows us to fix "disk yoyo" during suspend (disk
spinning down/up/down).

[We've tried that before; since that cpufreq problems were fixed and I've
tried make allyes config and fixed resulting damage.]

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 8 deletions

diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index 7bc1d44d8814..b0eba3ac6420 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -2323,17 +2323,16 @@ static int aty128_pci_suspend(struct pci_dev *pdev, pm_message_t state)
          * can properly take care of D3 ? Also, with swsusp, we
          * know we'll be rebooted, ...
          */
-#ifdef CONFIG_PPC_PMAC
+#ifndef CONFIG_PPC_PMAC
         /* HACK ALERT ! Once I find a proper way to say to each driver
          * individually what will happen with it's PCI slot, I'll change
          * that. On laptops, the AGP slot is just unclocked, so D2 is
          * expected, while on desktops, the card is powered off
          */
-        if (state >= 3)
-                state = 2;
+        return 0;
 #endif /* CONFIG_PPC_PMAC */
          
-        if (state != 2 || state == pdev->dev.power.power_state)
+        if (state.event == pdev->dev.power.power_state.event)
                 return 0;
 
         printk(KERN_DEBUG "aty128fb: suspending...\n");
@@ -2367,7 +2366,7 @@ static int aty128_pci_suspend(struct pci_dev *pdev, pm_message_t state)
          * used dummy fb ops, 2.5 need proper support for this at the
          * fbdev level
          */
-        if (state == 2)
+        if (state.event != PM_EVENT_ON)
                 aty128_set_suspend(par, 1);
 
         release_console_sem();
@@ -2382,12 +2381,11 @@ static int aty128_do_resume(struct pci_dev *pdev)
         struct fb_info *info = pci_get_drvdata(pdev);
         struct aty128fb_par *par = info->par;
 
-        if (pdev->dev.power.power_state == 0)
+        if (pdev->dev.power.power_state.event == PM_EVENT_ON)
                 return 0;
 
         /* Wakeup chip */
-        if (pdev->dev.power.power_state == 2)
-                aty128_set_suspend(par, 0);
+        aty128_set_suspend(par, 0);
         par->asleep = 0;
 
         /* Restore display & engine */