drm: encapsulate crtc->set_config calls
With refcounting we need to adjust framebuffer refcounts at each
callsite - much easier to do if they all call the same little helper
function.
Reviewed-by: Rob Clark <rob@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index a9abf49..7ca2f28 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -381,7 +381,7 @@
memset(&set, 0, sizeof(struct drm_mode_set));
set.crtc = crtc;
set.fb = NULL;
- ret = crtc->funcs->set_config(&set);
+ ret = drm_mode_set_config_internal(&set);
if (ret)
DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
}
@@ -1801,6 +1801,21 @@
}
/**
+ * drm_mode_set_config_internal - helper to call ->set_config
+ * @set: modeset config to set
+ *
+ * This is a little helper to wrap internal calls to the ->set_config driver
+ * interface. The only thing it adds is correct refcounting dance.
+ */
+int drm_mode_set_config_internal(struct drm_mode_set *set)
+{
+ struct drm_crtc *crtc = set->crtc;
+
+ return crtc->funcs->set_config(set);
+}
+EXPORT_SYMBOL(drm_mode_set_config_internal);
+
+/**
* drm_mode_setcrtc - set CRTC configuration
* @dev: drm device for the ioctl
* @data: data pointer for the ioctl
@@ -1963,7 +1978,7 @@
set.connectors = connector_set;
set.num_connectors = crtc_req->count_connectors;
set.fb = fb;
- ret = crtc->funcs->set_config(&set);
+ ret = drm_mode_set_config_internal(&set);
out:
kfree(connector_set);