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author | Tony Lindgren <tony@atomide.com> | 2018-10-01 09:33:28 -0700 |
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committer | Tony Lindgren <tony@atomide.com> | 2018-10-01 09:33:28 -0700 |
commit | f5e80203dadc28176f7b5ad2ec00652dd524fb9a (patch) | |
tree | 48948c6f3c723170b238a9fcb9b16d9018da414a /drivers/bus/ti-sysc.c | |
parent | f949078302594b2f68aa8b4f94dae540d9b66d2c (diff) | |
download | linux-f5e80203dadc28176f7b5ad2ec00652dd524fb9a.tar.gz linux-f5e80203dadc28176f7b5ad2ec00652dd524fb9a.tar.bz2 linux-f5e80203dadc28176f7b5ad2ec00652dd524fb9a.zip |
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/ti-sysc.c')
-rw-r--r-- | drivers/bus/ti-sysc.c | 115 |
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, |