[PATCH 14/47] PM: PCI and IDE handle PM_EVENT_PRETHAW

Greg KH
2006-09-26T05:52:49Z

From: David Brownell <david-b@pacbell.net>

Convert some framework code to handle the new PRETHAW message.

- IDE just treats it like a FREEZE.

- The pci_choose_state() thingie still doesn't use PCI_D0 when it gets a
FREEZE (and now PRETHAW) event, which seems rather buglike but wasn't
something to change with this patch.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/ide/ide.c | 6 ++++--
drivers/pci/pci.c | 4 +++-
2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index defd4b4..9c8468d 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1207,7 +1207,7 @@ int system_bus_clock (void)

EXPORT_SYMBOL(system_bus_clock);

-static int generic_ide_suspend(struct device *dev, pm_message_t state)
+static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
{
ide_drive_t *drive = dev->driver_data;
struct request rq;
@@ -1221,7 +1221,9 @@ static int generic_ide_suspend(struct de
rq.special = &args;
rq.end_io_data = &rqpm;
rqpm.pm_step = ide_pm_state_start_suspend;
- rqpm.pm_state = state.event;
+ if (mesg.event == PM_EVENT_PRETHAW)
+ mesg.event = PM_EVENT_FREEZE;
+ rqpm.pm_state = mesg.event;

return ide_do_drive_cmd(drive, &rq, ide_wait);
}
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 9f79dd6..8ab0278 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -432,10 +432,12 @@ pci_power_t pci_choose_state(struct pci_
case PM_EVENT_ON:
return PCI_D0;
case PM_EVENT_FREEZE:
+ case PM_EVENT_PRETHAW:
+ /* REVISIT both freeze and pre-thaw "should" use D0 */
case PM_EVENT_SUSPEND:
return PCI_D3hot;
default:
- printk("They asked me for state %d\n", state.event);
+ printk("Unrecognized suspend event %d\n", state.event);
BUG();
}
return PCI_D0;
--
1.4.2.1