linux-kernel - Re: [PATCH] virtio: virtio_console: add missing MODULE_DEVICE

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Date:   Wed, 11 Mar 2020 15:53:56 +0100
From:   Amit Shah <amit@...nel.org>
To:     Alexander Lobakin <alobakin@...nk.ru>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sjur Brandeland <sjur.brandeland@...ricsson.com>,
        Rusty Russell <rusty@...tcorp.com.au>,
        virtualization@...ts.linux-foundation.org, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio: virtio_console: add missing
 MODULE_DEVICE_TABLE() for rproc serial

On Tue, 2020-03-10 at 14:05 +0300, Alexander Lobakin wrote:
> rproc_serial_id_table lacks an exposure to module devicetable, so
> when remoteproc firmware requests VIRTIO_ID_RPROC_SERIAL, no uevent
> is generated and no module autoloading occurs.
> Add missing MODULE_DEVICE_TABLE() annotation and move the existing
> one for VIRTIO_ID_CONSOLE right to the table itself.
> 
> Fixes: 1b6370463e88 ("virtio_console: Add support for remoteproc
> serial")
> Cc: <stable@...r.kernel.org> # v3.8+
> Signed-off-by: Alexander Lobakin <alobakin@...nk.ru>

Reviewed-by: Amit Shah <amit@...nel.org>

Thanks,

> ---
>  drivers/char/virtio_console.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/char/virtio_console.c
> b/drivers/char/virtio_console.c
> index 4df9b40d6342..7e1bc0f580a2 100644
> --- a/drivers/char/virtio_console.c
> +++ b/drivers/char/virtio_console.c
> @@ -2116,6 +2116,7 @@ static struct virtio_device_id id_table[] = {
>  	{ VIRTIO_ID_CONSOLE, VIRTIO_DEV_ANY_ID },
>  	{ 0 },
>  };
> +MODULE_DEVICE_TABLE(virtio, id_table);
>  
>  static unsigned int features[] = {
>  	VIRTIO_CONSOLE_F_SIZE,
> @@ -2128,6 +2129,7 @@ static struct virtio_device_id
> rproc_serial_id_table[] = {
>  #endif
>  	{ 0 },
>  };
> +MODULE_DEVICE_TABLE(virtio, rproc_serial_id_table);
>  
>  static unsigned int rproc_serial_features[] = {
>  };
> @@ -2280,6 +2282,5 @@ static void __exit fini(void)
>  module_init(init);
>  module_exit(fini);
>  
> -MODULE_DEVICE_TABLE(virtio, id_table);
>  MODULE_DESCRIPTION("Virtio console driver");
>  MODULE_LICENSE("GPL");