linux-kernel - [PATCH v12 4/6] staging: vc04_services: vchiq_arm: Register vchiq_bus

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Message-Id: <20230923143200.268063-5-umang.jain@ideasonboard.com>
Date:   Sat, 23 Sep 2023 20:01:58 +0530
From:   Umang Jain <umang.jain@...asonboard.com>
To:     linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Stefan Wahren <stefan.wahren@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Adrien Thierry <athierry@...hat.com>,
        Dan Carpenter <error27@...il.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Umang Jain <umang.jain@...asonboard.com>
Subject: [PATCH v12 4/6] staging: vc04_services: vchiq_arm: Register vchiq_bus_type

Register the vchiq_bus_type bus with the vchiq interface.
The bcm2835-camera and bcm2835_audio will be registered to this bus type
going ahead.

Signed-off-by: Umang Jain <umang.jain@...asonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@...asonboard.com>
---
 .../vc04_services/interface/vchiq_arm/vchiq_arm.c   | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index aa2313f3bcab..9388859b9b56 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -12,6 +12,7 @@
 #include <linux/cdev.h>
 #include <linux/fs.h>
 #include <linux/device.h>
+#include <linux/device/bus.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
@@ -33,6 +34,7 @@
 #include "vchiq_core.h"
 #include "vchiq_ioctl.h"
 #include "vchiq_arm.h"
+#include "vchiq_bus.h"
 #include "vchiq_debugfs.h"
 #include "vchiq_connected.h"
 #include "vchiq_pagelist.h"
@@ -1870,9 +1872,17 @@ static int __init vchiq_driver_init(void)
 {
 	int ret;
 
+	ret = bus_register(&vchiq_bus_type);
+	if (ret) {
+		pr_err("Failed to register %s\n", vchiq_bus_type.name);
+		return ret;
+	}
+
 	ret = platform_driver_register(&vchiq_driver);
-	if (ret)
+	if (ret) {
 		pr_err("Failed to register vchiq driver\n");
+		bus_unregister(&vchiq_bus_type);
+	}
 
 	return ret;
 }
@@ -1880,6 +1890,7 @@ module_init(vchiq_driver_init);
 
 static void __exit vchiq_driver_exit(void)
 {
+	bus_unregister(&vchiq_bus_type);
 	platform_driver_unregister(&vchiq_driver);
 }
 module_exit(vchiq_driver_exit);
-- 
2.40.1