linux-kernel - Re: [PATCH v2 2/3] nvmem: core: set the size for the nvmem binary file.

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Date:	Wed, 7 Oct 2015 13:56:12 +0100
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	maxime.ripard@...e-electrons.com, linux-kernel@...r.kernel.org,
	andrew@...n.ch, wxt@...k-chips.com, stefan.wahren@...e.com,
	pantelis.antoniou@...sulko.com, maitysanchayan@...il.com,
	p.zabel@...gutronix.de, s.hauer@...gutronix.de,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/3] nvmem: core: set the size for the nvmem binary
 file.

On Wed, Oct 07, 2015 at 12:00:55PM +0100, Srinivas Kandagatla wrote:
> This patch sets the actual size of binary file to the nvmem size.
> Previously this was not possible as the core was using the static global
> data structures for attributes.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
>  drivers/nvmem/core.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> index 0a70e31..737fa75 100644
> --- a/drivers/nvmem/core.c
> +++ b/drivers/nvmem/core.c
> @@ -315,6 +315,7 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
>  	if (!nvmem->read_only)
>  		nvmem->bin.attr.mode |= S_IWUSR;
>  
> +	nvmem->bin.size = nvmem->size;

Why does the size matter?  What userspace tool needs to know this?

thanks,

greg k-h
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