openwrt/target/linux/bcm27xx/patches-6.6/950-0812-media-rp1-cfe-Fix-error-paths-in-cfe_start_streaming.patch

From f604d813cb020d470d1a34e3a2e0c3ea5810cf9f Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Thu, 21 Dec 2023 17:59:15 +0000
Subject: [PATCH 0812/1085] media: rp1: cfe: Fix error paths in
 cfe_start_streaming

Noted that if we get "node link is not enabled", then we also
get the videobuf2 splat for the driver not cleaning up correctly
on a failed start_streaming, and indeed we weren't returning the
buffers.

Checking the other error paths, noted that the "FE enabled, but
FE_CONFIG node is not" path was not calling pm_runtime_put.

Fix both paths.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/platform/raspberrypi/rp1_cfe/cfe.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
+++ b/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
@@ -1112,7 +1112,8 @@ static int cfe_start_streaming(struct vb
 	if (!check_state(cfe, NODE_ENABLED, node->id)) {
 		cfe_err("%s node link is not enabled.\n",
 			node_desc[node->id].name);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err_streaming;
 	}
 
 	ret = pm_runtime_resume_and_get(&cfe->pdev->dev);
@@ -1126,7 +1127,7 @@ static int cfe_start_streaming(struct vb
 	    !check_state(cfe, NODE_ENABLED, cfe->node[FE_CONFIG].id)) {
 		cfe_err("FE enabled, but FE_CONFIG node is not\n");
 		ret = -EINVAL;
-		goto err_streaming;
+		goto err_pm_put;
 	}
 
 	ret = media_pipeline_start(&node->pad, &cfe->pipe);