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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-30 23:42:51 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-07-15 01:33:10 +0200 |
| commit | d460acebd7959cc91e7edc594d90adb9b72a0b05 (patch) | |
| tree | 74701e2151eb83d1cef064e590aa0027fa5cf7e0 /drivers/acpi/dock.c | |
| parent | ACPI: simplify acpiphp driver with new helper functions (diff) | |
| download | linux-d460acebd7959cc91e7edc594d90adb9b72a0b05.tar.xz linux-d460acebd7959cc91e7edc594d90adb9b72a0b05.zip | |
ACPI / dock: Drop the hp_lock mutex from struct dock_station
The only existing user of the hp_lock mutex in struct dock_station,
hotplug_dock_devices(), is always called under acpi_scan_lock and
cannot race with another instance of itself, so drop the mutex
which is not necessary.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/dock.c')
| -rw-r--r-- | drivers/acpi/dock.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 810d1d720b1f..c10761533d6f 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -63,7 +63,6 @@ struct dock_station { acpi_handle handle; unsigned long last_dock_time; u32 flags; - struct mutex hp_lock; struct list_head dependent_devices; struct list_head sibling; @@ -351,8 +350,6 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event) { struct dock_dependent_device *dd; - mutex_lock(&ds->hp_lock); - /* * First call driver specific hotplug functions */ @@ -371,7 +368,6 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event) else dock_create_acpi_device(dd->handle); } - mutex_unlock(&ds->hp_lock); } static void dock_event(struct dock_station *ds, u32 event, int num) @@ -893,7 +889,6 @@ static int __init dock_add(acpi_handle handle) dock_station->dock_device = dd; dock_station->last_dock_time = jiffies - HZ; - mutex_init(&dock_station->hp_lock); INIT_LIST_HEAD(&dock_station->sibling); INIT_LIST_HEAD(&dock_station->dependent_devices); |