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Subject: Re: [PATCH v8 2/5] staging: vc04_services: vchiq_arm: Register vchiq_bus_type
From:   Kieran Bingham <kieran.bingham@ideasonboard.com>
Cc:     stefan.wahren@i2se.com, gregkh@linuxfoundation.org,
        f.fainelli@gmail.com, athierry@redhat.com, error27@gmail.com,
        dave.stevenson@raspberrypi.com, laurent.pinchart@ideasonboard.com,
        Umang Jain <umang.jain@ideasonboard.com>
To:     Umang Jain <umang.jain@ideasonboard.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-media@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
        linux-staging@lists.linux.dev
Date:   Wed, 28 Jun 2023 12:21:29 +0100
Message-ID: <168795128917.2878450.12280941046284606847@Monstersaurus>
User-Agent: alot/0.10
Precedence: bulk

Quoting Umang Jain (2023-06-27 21:16:25)
> Register the vchiq_bus_type bus with the vchiq interface.
> The bcm2835-camera nad bcm2835_audio will be registered to this bus type

s/nad/and/

Is it possible to rename bcm2835_audio to bcm2835-audio for consistency?
Or is that baked into existing usage/abi already?

If it can be changed, I think it's probably something to do in an
independent patch at the end of the series anyway.

I suspect this patch could be merged with 1/5 but I think it's ok
separate too.


Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

> going ahead.
>=20
> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
> ---
>  .../vc04_services/interface/vchiq_arm/vchiq_arm.c        | 9 +++++++++
>  1 file changed, 9 insertions(+)
>=20
> 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..e8d40f891449 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>
> @@ -34,6 +35,7 @@
>  #include "vchiq_ioctl.h"
>  #include "vchiq_arm.h"
>  #include "vchiq_debugfs.h"
> +#include "vchiq_device.h"
>  #include "vchiq_connected.h"
>  #include "vchiq_pagelist.h"
> =20
> @@ -1870,6 +1872,12 @@ static int __init vchiq_driver_init(void)
>  {
>         int ret;
> =20
> +       ret =3D bus_register(&vchiq_bus_type);
> +       if (ret) {
> +               pr_err("Failed to register %s\n", vchiq_bus_type.name);
> +               return ret;
> +       }
> +
>         ret =3D platform_driver_register(&vchiq_driver);
>         if (ret)
>                 pr_err("Failed to register vchiq driver\n");
> @@ -1880,6 +1888,7 @@ module_init(vchiq_driver_init);
> =20
>  static void __exit vchiq_driver_exit(void)
>  {
> +       bus_unregister(&vchiq_bus_type);
>         platform_driver_unregister(&vchiq_driver);
>  }
>  module_exit(vchiq_driver_exit);
> --=20
> 2.39.1
>