linux-kernel - Re: [PATCH 2/2] fpga: add cancel() and get

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Message-ID: <YKV6G+9FOgMsqQuz@epycbox.lan>
Date:   Wed, 19 May 2021 13:50:35 -0700
From:   Moritz Fischer <mdf@...nel.org>
To:     trix@...hat.com
Cc:     mdf@...nel.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] fpga: add cancel() and get_error() to update ops

Tom,

On Wed, May 19, 2021 at 01:43:18PM -0700, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> A user may want to cancel an update or get
> more information on when an update fails.
> Add some device ops to do these.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
>  include/linux/fpga/fpga-mgr.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
> index ab68280f3b4a4..31d6ebc34d87a 100644
> --- a/include/linux/fpga/fpga-mgr.h
> +++ b/include/linux/fpga/fpga-mgr.h
> @@ -111,6 +111,8 @@ struct fpga_image_info {
>   * @write: write count bytes of configuration data to the FPGA
>   * @write_sg: write the scatter list of configuration data to the FPGA
>   * @write_complete: set FPGA to operating state after writing is done
> + * @cancel: cancel the update
> + * @get_error: get extended error information
>   */
>  struct fpga_manager_update_ops {
>  	int (*write_init)(struct fpga_manager *mgr,
> @@ -120,6 +122,8 @@ struct fpga_manager_update_ops {
>  	int (*write_sg)(struct fpga_manager *mgr, struct sg_table *sgt);
>  	int (*write_complete)(struct fpga_manager *mgr,
>  			      struct fpga_image_info *info);
> +	int (*cancel)(struct fpga_manager *mgr);
> +	int (*get_error)(struct fpga_manager *mgr, u64 *err);
>  };
>  
>  /**
> -- 
> 2.26.3
> 

There is no user for this, so if we add this, we add it with code
calling it.

Thanks

- Moritz