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authorTony Lindgren <tony@atomide.com>2018-10-01 09:33:28 -0700
committerTony Lindgren <tony@atomide.com>2018-10-01 09:33:28 -0700
commitf5e80203dadc28176f7b5ad2ec00652dd524fb9a (patch)
tree48948c6f3c723170b238a9fcb9b16d9018da414a /drivers/bus
parentf949078302594b2f68aa8b4f94dae540d9b66d2c (diff)
downloadlinux-f5e80203dadc28176f7b5ad2ec00652dd524fb9a.tar.bz2
bus: ti-sysc: Just use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS
As Grygorii Strashko pointed out, the runtime PM use count of the children can be whatever at suspend and we should not use it. So let's just suspend ti-sysc at noirq level and get rid of some code. Let's also remove the PM_SLEEP ifdef and use __maybe_unused as the PM code already deals with the ifdefs. Suggested-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/bus')
-rw-r--r--drivers/bus/ti-sysc.c115
1 files changed, 4 insertions, 111 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 59df869109a3..a3a2d39280d9 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -87,7 +87,6 @@ struct sysc {
u32 revision;
bool enabled;
bool needs_resume;
- unsigned int noirq_suspend:1;
bool child_needs_resume;
struct delayed_work idle_work;
};
@@ -702,137 +701,31 @@ awake:
return error;
}
-#ifdef CONFIG_PM_SLEEP
-static int sysc_suspend(struct device *dev)
-{
- struct sysc *ddata;
- int error;
-
- ddata = dev_get_drvdata(dev);
-
- if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
- return 0;
-
- if (!ddata->enabled || ddata->noirq_suspend)
- return 0;
-
- dev_dbg(ddata->dev, "%s %s\n", __func__,
- ddata->name ? ddata->name : "");
-
- error = pm_runtime_put_sync_suspend(dev);
- if (error == -EBUSY) {
- dev_dbg(ddata->dev, "%s busy, tagging for noirq suspend %s\n",
- __func__, ddata->name ? ddata->name : "");
-
- ddata->noirq_suspend = true;
-
- return 0;
- } else if (error < 0) {
- dev_warn(ddata->dev, "%s cannot suspend %i %s\n",
- __func__, error,
- ddata->name ? ddata->name : "");
-
- return 0;
- }
-
- ddata->needs_resume = true;
-
- return 0;
-}
-
-static int sysc_resume(struct device *dev)
-{
- struct sysc *ddata;
- int error;
-
- ddata = dev_get_drvdata(dev);
-
- if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
- return 0;
-
- if (!ddata->needs_resume || ddata->noirq_suspend)
- return 0;
-
- dev_dbg(ddata->dev, "%s %s\n", __func__,
- ddata->name ? ddata->name : "");
-
- error = pm_runtime_get_sync(dev);
- if (error < 0) {
- dev_err(ddata->dev, "%s error %i %s\n",
- __func__, error,
- ddata->name ? ddata->name : "");
-
- return error;
- }
-
- ddata->needs_resume = false;
-
- return 0;
-}
-
-static int sysc_noirq_suspend(struct device *dev)
+static int __maybe_unused sysc_noirq_suspend(struct device *dev)
{
struct sysc *ddata;
- int error;
ddata = dev_get_drvdata(dev);
if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
return 0;
- if (!ddata->enabled || !ddata->noirq_suspend)
- return 0;
-
- dev_dbg(ddata->dev, "%s %s\n", __func__,
- ddata->name ? ddata->name : "");
-
- error = sysc_runtime_suspend(dev);
- if (error) {
- dev_warn(ddata->dev, "%s busy %i %s\n",
- __func__, error, ddata->name ? ddata->name : "");
-
- return 0;
- }
-
- ddata->needs_resume = true;
-
- return 0;
+ return pm_runtime_force_suspend(dev);
}
-static int sysc_noirq_resume(struct device *dev)
+static int __maybe_unused sysc_noirq_resume(struct device *dev)
{
struct sysc *ddata;
- int error;
ddata = dev_get_drvdata(dev);
if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
return 0;
- if (!ddata->needs_resume || !ddata->noirq_suspend)
- return 0;
-
- dev_dbg(ddata->dev, "%s %s\n", __func__,
- ddata->name ? ddata->name : "");
-
- error = sysc_runtime_resume(dev);
- if (error) {
- dev_warn(ddata->dev, "%s cannot resume %i %s\n",
- __func__, error,
- ddata->name ? ddata->name : "");
-
- return error;
- }
-
- /* Maybe also reconsider clearing noirq_suspend at some point */
- ddata->needs_resume = false;
-
- return 0;
+ return pm_runtime_force_resume(dev);
}
-#endif
static const struct dev_pm_ops sysc_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(sysc_suspend, sysc_resume)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_noirq_suspend, sysc_noirq_resume)
SET_RUNTIME_PM_OPS(sysc_runtime_suspend,
sysc_runtime_resume,