>From 23dc76b1a4c7eb516b2830e1d2bb588316e18e93 Mon Sep 17 00:00:00 2001
From: Zhiwei Yang <yangzhiwei@xxxxxxxxxxxxx>
Date: Sat, 18 Sep 2021 16:17:06 +0800
Subject: [PATCH] drm/radeon: fix uninitialized bool variable
The bool variable detected_hpd_without_ddc in struct radeon_connector
is uninitialized when first used, that may cause unnecessary ddc ops.
Make it as false when a new connector is alloced.
Signed-off-by: Zhiwei Yang <yangzhiwei@xxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_connectors.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index fe12d9d91d7a..c1987a66373f 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1866,6 +1866,7 @@ radeon_add_atom_connector(struct drm_device *dev,
bool shared_ddc = false;
bool is_dp_bridge = false;
bool has_aux = false;
+ bool detected_hpd_without_ddc = false;
if (connector_type == DRM_MODE_CONNECTOR_Unknown)
return;
@@ -1923,6 +1924,7 @@ radeon_add_atom_connector(struct drm_device *dev,
radeon_connector->shared_ddc = shared_ddc;
radeon_connector->connector_object_id = connector_object_id;
radeon_connector->hpd = *hpd;
+ radeon_connector->detected_hpd_without_ddc = detected_hpd_without_ddc;
radeon_connector->router = *router;
if (router->ddc_valid || router->cd_valid) {
@@ -2384,6 +2386,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
struct radeon_connector *radeon_connector;
struct i2c_adapter *ddc = NULL;
uint32_t subpixel_order = SubPixelNone;
+ bool detected_hpd_without_ddc = false;
if (connector_type == DRM_MODE_CONNECTOR_Unknown)
return;
@@ -2414,6 +2417,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
radeon_connector->devices = supported_device;
radeon_connector->connector_object_id = connector_object_id;
radeon_connector->hpd = *hpd;
+ radeon_connector->detected_hpd_without_ddc = detected_hpd_without_ddc;
switch (connector_type) {
case DRM_MODE_CONNECTOR_VGA:
--
2.20.1
