linux-kernel - [PATCH v2] media: ipu-bridge: fix error code in ipu_bridge

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Message-ID: <f468c4ac-0629-41b5-b5d1-e26f70e44800@moroto.mountain>
Date: Fri, 10 May 2024 18:43:31 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Bingbu Cao <bingbu.cao@...el.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Daniel Scally <dan.scally@...asonboard.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH v2] media: ipu-bridge: fix error code in ipu_bridge_init()

Return -EINVAL if "bridge->n_sensors == 0".  Don't return success.

Fixes: 881ca25978c6 ("media: ipu3-cio2: rename cio2 bridge to ipu bridge and move out of ipu3")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
v2: style change

 drivers/media/pci/intel/ipu-bridge.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 61750cc98d70..44a9d9c15b05 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -839,9 +839,14 @@ int ipu_bridge_init(struct device *dev,
 		bridge->data_lanes[i] = i + 1;
 
 	ret = ipu_bridge_connect_sensors(bridge);
-	if (ret || bridge->n_sensors == 0)
+	if (ret)
 		goto err_unregister_ipu;
 
+	if (bridge->n_sensors == 0) {
+		ret = -EINVAL;
+		goto err_unregister_ipu;
+	}
+
 	dev_info(dev, "Connected %d cameras\n", bridge->n_sensors);
 
 	fwnode = software_node_fwnode(&bridge->ipu_hid_node);
-- 
2.43.0