From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Make dock_init_hotplug() and dock_release_hotplug() slightly simpler
and move some checks in those functions to the code paths where they
are needed.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/acpi/dock.c | 24 ++++++++----------------
1 file changed, 8 insertions(+), 16 deletions(-)
Index: linux-pm/drivers/acpi/dock.c
===================================================================
--- linux-pm.orig/drivers/acpi/dock.c
+++ linux-pm/drivers/acpi/dock.c
@@ -134,19 +134,16 @@ static int dock_init_hotplug(struct dock
int ret = 0;
mutex_lock(&hotplug_lock);
-
- if (dd->hp_context) {
+ if (WARN_ON(dd->hp_context)) {
ret = -EEXIST;
} else {
dd->hp_refcount = 1;
dd->hp_ops = ops;
dd->hp_context = context;
dd->hp_release = release;
+ if (init)
+ init(context);
}
-
- if (!WARN_ON(ret) && init)
- init(context);
-
mutex_unlock(&hotplug_lock);
return ret;
}
@@ -161,22 +158,17 @@ static int dock_init_hotplug(struct dock
*/
static void dock_release_hotplug(struct dock_dependent_device *dd)
{
- void (*release)(void *) = NULL;
- void *context = NULL;
-
mutex_lock(&hotplug_lock);
-
if (dd->hp_context && !--dd->hp_refcount) {
+ void (*release)(void *) = dd->hp_release;
+ void *context = dd->hp_context;
+
dd->hp_ops = NULL;
- context = dd->hp_context;
dd->hp_context = NULL;
- release = dd->hp_release;
dd->hp_release = NULL;
+ if (release)
+ release(context);
}
-
- if (release && context)
- release(context);
-
mutex_unlock(&hotplug_lock);
}
--
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