Re: [RFC] dma-buf: Implement test module

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On Thu, Dec 12, 2013 at 03:36:29PM +0100, Thierry Reding wrote:
> This is a simple test module that can be used to allocate, export and
> delete DMA-BUF objects. It can be used to test DMA-BUF sharing in
> systems that lack a real second driver.
> 
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
> ---
>  drivers/base/Kconfig        |   4 +
>  drivers/base/Makefile       |   1 +
>  drivers/base/dma-buf-test.c | 308 ++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 313 insertions(+)
>  create mode 100644 drivers/base/dma-buf-test.c
> 
> diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
> index e373671652b0..bed2abb9491b 100644
> --- a/drivers/base/Kconfig
> +++ b/drivers/base/Kconfig
> @@ -200,6 +200,10 @@ config DMA_SHARED_BUFFER
>  	  APIs extension; the file's descriptor can then be passed on to other
>  	  driver.
>  
> +config DMA_BUF_TEST
> +	tristate "DMA-BUF test module"
> +	depends on DMA_SHARED_BUFFER

We need some good documentation here.

> > +static struct miscdevice dmabuf_device = {
> +	.minor = 128,

Why did you pick this minor?  Why not just make it dynamic?

thanks,

greg k-h
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