linux-kernel - Re: [PATCH 2/3] ACPI: scan add call to probe amba devices

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Date:	Tue, 01 Dec 2015 03:16:53 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Graeme Gregory <graeme.gregory@...aro.org>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, shannon.zhao@...aro.org,
	Len Brown <lenb@...nel.org>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [PATCH 2/3] ACPI: scan add call to probe amba devices

On Wednesday, September 30, 2015 11:38:49 AM Graeme Gregory wrote:
> Call the amba device creation function in the default enumeration path,
> this is the same location platform devices are probed.

First, I'm sorry for the glacially slow response here.

> Cc: Rafael J. Wysocki <rjw@...ysocki.net>
> Cc: Len Brown <lenb@...nel.org>
> Cc: Russell King <linux@....linux.org.uk>
> Signed-off-by: Graeme Gregory <graeme.gregory@...aro.org>
> ---
>  drivers/acpi/scan.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index f834b8c..aa3184e 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -1633,8 +1633,10 @@ static void acpi_default_enumeration(struct acpi_device *device)
>  	acpi_dev_get_resources(device, &resource_list, acpi_check_spi_i2c_slave,
>  			       &is_spi_i2c_slave);
>  	acpi_dev_free_resource_list(&resource_list);
> -	if (!is_spi_i2c_slave)
> +	if (!is_spi_i2c_slave) {
> +		acpi_create_amba_device(device);

Do you really have to add this here?

It would be much cleaner to use a new scan handler instead.

>  		acpi_create_platform_device(device);
> +	}
>  }
>  
>  static const struct acpi_device_id generic_device_ids[] = {
> 

Thanks,
Rafael

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