linux-kernel - Re: [PATCH] dmaengine: pl330: use subsys

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Message-id: <5440E4EB.1000300@samsung.com>
Date:	Fri, 17 Oct 2014 11:44:11 +0200
From:	Krzysztof Kozłowski <k.kozlowski@...sung.com>
To:	Ray Jui <rjui@...adcom.com>, Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>
Cc:	Scott Branden <sbranden@...adcom.com>, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dmaengine: pl330: use subsys_initcall

On 17.10.2014 02:48, Ray Jui wrote:
> As part of subsystem that many slave drivers depend on, it's more
> appropriate for the pl330 DMA driver to be initialized at
> subsys_initcall than device_initcall
> 
> Signed-off-by: Ray Jui <rjui@...adcom.com>
> ---
>  drivers/dma/pl330.c |   12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)

For our setup this was not needed but anyway works fine.
Tested on Trats2 (Exynos4412) and Gear2 (Exynos3250).

Tested-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

Best regards,
Krzysztof

> 
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index d5149aa..abb4cae 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -2811,7 +2811,17 @@ static struct amba_driver pl330_driver = {
>  	.remove = pl330_remove,
>  };
>  
> -module_amba_driver(pl330_driver);
> +static int __init pl330_init(void)
> +{
> +	return amba_driver_register(&pl330_driver);
> +}
> +subsys_initcall(pl330_init);
> +
> +static void __exit pl330_exit(void)
> +{
> +	amba_driver_unregister(&pl330_driver);
> +}
> +module_exit(pl330_exit);
>  
>  MODULE_AUTHOR("Jaswinder Singh <jassi.brar@...sung.com>");
>  MODULE_DESCRIPTION("API Driver for PL330 DMAC");
> 

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