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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-06-27 21:42:18 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-07-01 22:04:02 +0300
commit07358194badf73e267289b40b761f5dc56928eab (patch)
tree093f6d495a02bf16c471eb17ac36dd7a2da77ee9 /drivers/base
parent03c765b0e3b4cb5063276b086c76f7a612856a9a (diff)
downloadlinux-07358194badf73e267289b40b761f5dc56928eab.tar.xz
PM: runtime: Redefine pm_runtime_release_supplier()
Instead of passing an extra bool argument to pm_runtime_release_supplier(), make its callers take care of triggering a runtime-suspend of the supplier device as needed. No expected functional impact. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: 5.1+ <stable@vger.kernel.org> # 5.1+
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/core.c3
-rw-r--r--drivers/base/power/runtime.c20
2 files changed, 11 insertions, 12 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 7cd789c4985d..58aa49527d3a 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -486,7 +486,8 @@ static void device_link_release_fn(struct work_struct *work)
/* Ensure that all references to the link object have been dropped. */
device_link_synchronize_removal();
- pm_runtime_release_supplier(link, true);
+ pm_runtime_release_supplier(link);
+ pm_request_idle(link->supplier);
put_device(link->consumer);
put_device(link->supplier);
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 676dc72d912d..23cc4c377d77 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -308,13 +308,10 @@ static int rpm_get_suppliers(struct device *dev)
/**
* pm_runtime_release_supplier - Drop references to device link's supplier.
* @link: Target device link.
- * @check_idle: Whether or not to check if the supplier device is idle.
*
- * Drop all runtime PM references associated with @link to its supplier device
- * and if @check_idle is set, check if that device is idle (and so it can be
- * suspended).
+ * Drop all runtime PM references associated with @link to its supplier device.
*/
-void pm_runtime_release_supplier(struct device_link *link, bool check_idle)
+void pm_runtime_release_supplier(struct device_link *link)
{
struct device *supplier = link->supplier;
@@ -327,9 +324,6 @@ void pm_runtime_release_supplier(struct device_link *link, bool check_idle)
while (refcount_dec_not_one(&link->rpm_active) &&
atomic_read(&supplier->power.usage_count) > 0)
pm_runtime_put_noidle(supplier);
-
- if (check_idle)
- pm_request_idle(supplier);
}
static void __rpm_put_suppliers(struct device *dev, bool try_to_suspend)
@@ -337,8 +331,11 @@ static void __rpm_put_suppliers(struct device *dev, bool try_to_suspend)
struct device_link *link;
list_for_each_entry_rcu(link, &dev->links.suppliers, c_node,
- device_links_read_lock_held())
- pm_runtime_release_supplier(link, try_to_suspend);
+ device_links_read_lock_held()) {
+ pm_runtime_release_supplier(link);
+ if (try_to_suspend)
+ pm_request_idle(link->supplier);
+ }
}
static void rpm_put_suppliers(struct device *dev)
@@ -1838,7 +1835,8 @@ void pm_runtime_drop_link(struct device_link *link)
return;
pm_runtime_drop_link_count(link->consumer);
- pm_runtime_release_supplier(link, true);
+ pm_runtime_release_supplier(link);
+ pm_request_idle(link->supplier);
}
static bool pm_runtime_need_not_resume(struct device *dev)