[PATCH] drm/atomic-helper: rename drm_atomic_helper_check_wb_encoder_state

[Dmitry Baryshkov]

The drm_atomic_helper_check_wb_encoder_state() function doesn't use
encoder for anything other than getting the drm_device instance. The
function's description talks about checking the writeback connector
state, not the encoder state. Moreover, there is no such thing as an
encoder state, encoders generally do not have a state on their own.

Drop the first argument and rename the function to
drm_atomic_helper_check_wb_connector_state().

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---

Abhinav at [1] pointed me to this function as one of the reasons to keep
WB check state in the encoder part of the MSM driver. However after a
second glance, it looks like this function isn't really concerned with
the encoder state and checks the connector state. Let's rename it to
make this more clear.

[1] https://lore.kernel.org/dri-devel/9a2e3ab2-a95f-3dee-b89c-aa69ffd9387e@quicinc.com/

---
 drivers/gpu/drm/drm_atomic_helper.c   | 10 ++++------
 drivers/gpu/drm/vkms/vkms_writeback.c |  2 +-
 include/drm/drm_atomic_helper.h       |  3 +--
 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 71d399397107..f32bf0212453 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -786,8 +786,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
 EXPORT_SYMBOL(drm_atomic_helper_check_modeset);
 
 /**
- * drm_atomic_helper_check_wb_encoder_state() - Check writeback encoder state
- * @encoder: encoder state to check
+ * drm_atomic_helper_check_wb_connector_state() - Check writeback connector state
  * @conn_state: connector state to check
  *
  * Checks if the writeback connector state is valid, and returns an error if it
@@ -797,8 +796,7 @@ EXPORT_SYMBOL(drm_atomic_helper_check_modeset);
  * Zero for success or -errno
  */
 int
-drm_atomic_helper_check_wb_encoder_state(struct drm_encoder *encoder,
-					 struct drm_connector_state *conn_state)
+drm_atomic_helper_check_wb_connector_state(struct drm_connector_state *conn_state)
 {
 	struct drm_writeback_job *wb_job = conn_state->writeback_job;
 	struct drm_property_blob *pixel_format_blob;
@@ -818,11 +816,11 @@ drm_atomic_helper_check_wb_encoder_state(struct drm_encoder *encoder,
 		if (fb->format->format == formats[i])
 			return 0;
 
-	drm_dbg_kms(encoder->dev, "Invalid pixel format %p4cc\n", &fb->format->format);
+	drm_dbg_kms(conn_state->connector->dev, "Invalid pixel format %p4cc\n", &fb->format->format);
 
 	return -EINVAL;
 }
-EXPORT_SYMBOL(drm_atomic_helper_check_wb_encoder_state);
+EXPORT_SYMBOL(drm_atomic_helper_check_wb_connector_state);
 
 /**
  * drm_atomic_helper_check_plane_state() - Check plane state for validity
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index d7e63aa14663..56edec6f1634 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -48,7 +48,7 @@ static int vkms_wb_encoder_atomic_check(struct drm_encoder *encoder,
 		return -EINVAL;
 	}
 
-	ret = drm_atomic_helper_check_wb_encoder_state(encoder, conn_state);
+	ret = drm_atomic_helper_check_wb_connector_state(conn_state);
 	if (ret < 0)
 		return ret;
 
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index 536a0b0091c3..742ccbcd7809 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -50,8 +50,7 @@ struct drm_private_state;
 int drm_atomic_helper_check_modeset(struct drm_device *dev,
 				struct drm_atomic_state *state);
 int
-drm_atomic_helper_check_wb_encoder_state(struct drm_encoder *encoder,
-					 struct drm_connector_state *conn_state);
+drm_atomic_helper_check_wb_connector_state(struct drm_connector_state *conn_state);
 int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state,
 					const struct drm_crtc_state *crtc_state,
 					int min_scale,
-- 
2.39.2