From: Luca Ceresoli <luca.ceresoli@bootlin.com>
Date: Tue, 19 Aug 2025 09:42:10 +0000 (+0200)
Subject: drm/debugfs: bridges_show: show refcount
X-Git-Tag: v6.18-rc1~134^2~16^2~16
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2a06126d1624f0661fac0833e7ee1dbdc636154e;p=thirdparty%2Fkernel%2Flinux.git

drm/debugfs: bridges_show: show refcount

Now that bridges are refcounted, exposing the refcount in debugfs can be
useful.

Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250819-drm-bridge-debugfs-removed-v7-1-970702579978@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index dd439d55177a8..d031447eebc95 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -1435,6 +1435,9 @@ static void drm_bridge_debugfs_show_bridge(struct drm_printer *p,
 					   unsigned int idx)
 {
 	drm_printf(p, "bridge[%u]: %ps\n", idx, bridge->funcs);
+
+	drm_printf(p, "\trefcount: %u\n", kref_read(&bridge->refcount));
+
 	drm_printf(p, "\ttype: [%d] %s\n",
 		   bridge->type,
 		   drm_get_connector_type_name(bridge->type));