[PATCH v7 11/11] drm/bridge: samsung-dsim: use dynamic lifetime management

[Luca Ceresoli <luca.ceresoli@bootlin.com>]

Allow this bridge to be removable without dangling pointers and
use-after-free, together with proper use of drm_bridge_get() and _put() by
consumers.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

---

This patch was added in v7.
---
 drivers/gpu/drm/bridge/samsung-dsim.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index 54de6ed2fae81bc13301a6b1ee8f38183a3118b6..3d41db7a0ceeddccc1a89a2ff1f38fe10ec6acfe 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -1935,9 +1935,9 @@ int samsung_dsim_probe(struct platform_device *pdev)
 	struct samsung_dsim *dsi;
 	int ret, i;
 
-	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
-	if (!dsi)
-		return -ENOMEM;
+	dsi = devm_drm_bridge_alloc(dev, struct samsung_dsim, bridge, &samsung_dsim_bridge_funcs);
+	if (IS_ERR(dsi))
+		return PTR_ERR(dsi);
 
 	init_completion(&dsi->completed);
 	spin_lock_init(&dsi->transfer_lock);
@@ -2007,7 +2007,6 @@ int samsung_dsim_probe(struct platform_device *pdev)
 
 	pm_runtime_enable(dev);
 
-	dsi->bridge.funcs = &samsung_dsim_bridge_funcs;
 	dsi->bridge.of_node = dev->of_node;
 	dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
 

-- 
2.48.1