From: David Brownell <[EMAIL PROTECTED]>
Small driver suspend() fixes in preparation for the PRETHAW events:
- Only compare message events for equality against PM_EVENT_* codes;
not against integers, or using greater/less-than comparisons.
(PM_EVENT_* should really become a __bitwise thing.)
- Explicitly test for SUSPEND events (rather than not-something-else)
before suspending devices.
- Removes more of the confusion between a pm_message_t (wraps event code)
and a "state" ... suspend() originally took a target system state.
These updates are correct and appropriate even without new PM_EVENT codes.
benh: "I think in the Mesh case, we should handle the freeze case as well or
we might get wild DMA."
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Acked-by: Pavel Machek <[EMAIL PROTECTED]>
Cc: Greg KH <[EMAIL PROTECTED]>
Cc: Paul Mackerras <[EMAIL PROTECTED]>
Cc: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
Cc: Mauro Carvalho Chehab <[EMAIL PROTECTED]>
Cc: James Bottomley <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/ide/ppc/pmac.c | 14 ++++++++------
drivers/media/dvb/cinergyT2/cinergyT2.c | 2 +-
drivers/scsi/mesh.c | 15 +++++++++++----
3 files changed, 20 insertions(+), 11 deletions(-)
diff -puN drivers/ide/ppc/pmac.c~fix-broken-dubious-driver-suspend-methods
drivers/ide/ppc/pmac.c
--- a/drivers/ide/ppc/pmac.c~fix-broken-dubious-driver-suspend-methods
+++ a/drivers/ide/ppc/pmac.c
@@ -1369,15 +1369,16 @@ pmac_ide_macio_attach(struct macio_dev *
}
static int
-pmac_ide_macio_suspend(struct macio_dev *mdev, pm_message_t state)
+pmac_ide_macio_suspend(struct macio_dev *mdev, pm_message_t mesg)
{
ide_hwif_t *hwif = (ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev);
int rc = 0;
- if (state.event != mdev->ofdev.dev.power.power_state.event &&
state.event >= PM_EVENT_SUSPEND) {
+ if (mesg.event != mdev->ofdev.dev.power.power_state.event
+ && mesg.event == PM_EVENT_SUSPEND) {
rc = pmac_ide_do_suspend(hwif);
if (rc == 0)
- mdev->ofdev.dev.power.power_state = state;
+ mdev->ofdev.dev.power.power_state = mesg;
}
return rc;
@@ -1473,15 +1474,16 @@ pmac_ide_pci_attach(struct pci_dev *pdev
}
static int
-pmac_ide_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+pmac_ide_pci_suspend(struct pci_dev *pdev, pm_message_t mesg)
{
ide_hwif_t *hwif = (ide_hwif_t *)pci_get_drvdata(pdev);
int rc = 0;
- if (state.event != pdev->dev.power.power_state.event && state.event >=
2) {
+ if (mesg.event != pdev->dev.power.power_state.event
+ && mesg.event == PM_EVENT_SUSPEND) {
rc = pmac_ide_do_suspend(hwif);
if (rc == 0)
- pdev->dev.power.power_state = state;
+ pdev->dev.power.power_state = mesg;
}
return rc;
diff -puN
drivers/media/dvb/cinergyT2/cinergyT2.c~fix-broken-dubious-driver-suspend-methods
drivers/media/dvb/cinergyT2/cinergyT2.c
---
a/drivers/media/dvb/cinergyT2/cinergyT2.c~fix-broken-dubious-driver-suspend-methods
+++ a/drivers/media/dvb/cinergyT2/cinergyT2.c
@@ -981,7 +981,7 @@ static int cinergyt2_suspend (struct usb
if (cinergyt2->disconnect_pending ||
mutex_lock_interruptible(&cinergyt2->sem))
return -ERESTARTSYS;
- if (state.event > PM_EVENT_ON) {
+ if (1) {
struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
cinergyt2_suspend_rc(cinergyt2);
diff -puN drivers/scsi/mesh.c~fix-broken-dubious-driver-suspend-methods
drivers/scsi/mesh.c
--- a/drivers/scsi/mesh.c~fix-broken-dubious-driver-suspend-methods
+++ a/drivers/scsi/mesh.c
@@ -1756,16 +1756,23 @@ static void set_mesh_power(struct mesh_s
pmac_call_feature(PMAC_FTR_MESH_ENABLE,
macio_get_of_node(ms->mdev), 0, 0);
msleep(10);
}
-}
+}
#ifdef CONFIG_PM
-static int mesh_suspend(struct macio_dev *mdev, pm_message_t state)
+static int mesh_suspend(struct macio_dev *mdev, pm_message_t mesg)
{
struct mesh_state *ms = (struct mesh_state *)macio_get_drvdata(mdev);
unsigned long flags;
- if (state.event == mdev->ofdev.dev.power.power_state.event ||
state.event < 2)
+ switch (mesg.event) {
+ case PM_EVENT_SUSPEND:
+ case PM_EVENT_FREEZE:
+ break;
+ default:
+ return 0;
+ }
+ if (mesg.event == mdev->ofdev.dev.power.power_state.event)
return 0;
scsi_block_requests(ms->host);
@@ -1780,7 +1787,7 @@ static int mesh_suspend(struct macio_dev
disable_irq(ms->meshintr);
set_mesh_power(ms, 0);
- mdev->ofdev.dev.power.power_state = state;
+ mdev->ofdev.dev.power.power_state = mesg;
return 0;
}
_
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