drm/amd/display: Remove unsued mutex and spinlock.

They seem to be obsolete.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 0 insertions, 15 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 741ca9e75590..12fcfd438776 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -411,12 +411,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
         /* Zero all the fields */
         memset(&init_data, 0, sizeof(init_data));
 
-        /* initialize DAL's lock (for SYNC context use) */
-        spin_lock_init(&adev->dm.dal_lock);
-
-        /* initialize DAL's mutex */
-        mutex_init(&adev->dm.dal_mutex);
-
         if(amdgpu_dm_irq_init(adev)) {
                 DRM_ERROR("amdgpu: failed to initialize DM IRQ support.\n");
                 goto error;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 33dc5dce1f6d..b3b5a40aee07 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -85,8 +85,6 @@ struct amdgpu_display_manager {
         struct dal *dal;
         struct dc *dc;
         struct cgs_device *cgs_device;
-        /* lock to be used when DAL is called from SYNC IRQ context */
-        spinlock_t dal_lock;
 
         struct amdgpu_device *adev;     /*AMD base driver*/
         struct drm_device *ddev;        /*DRM base driver*/
@@ -123,13 +121,6 @@ struct amdgpu_display_manager {
         struct list_head timer_handler_list;
         struct workqueue_struct *timer_workqueue;
 
-        /* Use dal_mutex for any activity which is NOT syncronized by
-         * DRM mode setting locks.
-         * For example: amdgpu_dm_hpd_low_irq() calls into DAL *without*
-         * DRM mode setting locks being acquired. This is where dal_mutex
-         * is acquired before calling into DAL. */
-        struct mutex dal_mutex;
-
         struct backlight_device *backlight_dev;
 
         const struct dc_link *backlight_link;