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authorUlf Hansson <ulf.hansson@linaro.org>2018-01-10 21:31:56 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-01-11 01:57:44 +0100
commita935424bb658f9ca37eb5e94119b857998341356 (patch)
tree4763ccc31976bb54544e2638dcd9bb2ff934ab2d /drivers/base
parent001d50c9a14f1fab94b329161a1db9235b4e60da (diff)
PM / domains: Don't skip driver's ->suspend|resume_noirq() callbacks
Commit 10da65423fdb (PM / Domains: Call driver's noirq callbacks) started to respect driver's noirq callbacks, but while doing that it also introduced a few potential problems. More precisely, in genpd_finish_suspend() and genpd_resume_noirq() the noirq callbacks at the driver level should be invoked, no matter of whether dev->power.wakeup_path is set or not. Additionally, the commit in question also made genpd_resume_noirq() to ignore the return value from pm_runtime_force_resume(). Let's fix both these issues! Fixes: 10da65423fdb (PM / Domains: Call driver's noirq callbacks) Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/domain.c30
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index f9dcc981b6b9..48255ce7c0ad 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1032,15 +1032,12 @@ static int genpd_prepare(struct device *dev)
static int genpd_finish_suspend(struct device *dev, bool poweroff)
{
struct generic_pm_domain *genpd;
- int ret;
+ int ret = 0;
genpd = dev_to_genpd(dev);
if (IS_ERR(genpd))
return -EINVAL;
- if (dev->power.wakeup_path && genpd_is_active_wakeup(genpd))
- return 0;
-
if (poweroff)
ret = pm_generic_poweroff_noirq(dev);
else
@@ -1048,10 +1045,18 @@ static int genpd_finish_suspend(struct device *dev, bool poweroff)
if (ret)
return ret;
+ if (dev->power.wakeup_path && genpd_is_active_wakeup(genpd))
+ return 0;
+
if (genpd->dev_ops.stop && genpd->dev_ops.start) {
ret = pm_runtime_force_suspend(dev);
- if (ret)
+ if (ret) {
+ if (poweroff)
+ pm_generic_restore_noirq(dev);
+ else
+ pm_generic_resume_noirq(dev);
return ret;
+ }
}
genpd_lock(genpd);
@@ -1085,7 +1090,7 @@ static int genpd_suspend_noirq(struct device *dev)
static int genpd_resume_noirq(struct device *dev)
{
struct generic_pm_domain *genpd;
- int ret = 0;
+ int ret;
dev_dbg(dev, "%s()\n", __func__);
@@ -1094,21 +1099,20 @@ static int genpd_resume_noirq(struct device *dev)
return -EINVAL;
if (dev->power.wakeup_path && genpd_is_active_wakeup(genpd))
- return 0;
+ return pm_generic_resume_noirq(dev);
genpd_lock(genpd);
genpd_sync_power_on(genpd, true, 0);
genpd->suspended_count--;
genpd_unlock(genpd);
- if (genpd->dev_ops.stop && genpd->dev_ops.start)
+ if (genpd->dev_ops.stop && genpd->dev_ops.start) {
ret = pm_runtime_force_resume(dev);
+ if (ret)
+ return ret;
+ }
- ret = pm_generic_resume_noirq(dev);
- if (ret)
- return ret;
-
- return ret;
+ return pm_generic_resume_noirq(dev);
}
/**

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