linux-kernel - Re: [PATCH] bus: fsl-mc: added missing fields to dprc_rsp_get_obj

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Date:   Wed, 25 Nov 2020 06:58:48 +0000
From:   Ioana Ciornei <ioana.ciornei@....com>
To:     Laurentiu Tudor <laurentiu.tudor@....com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Diana Madalina Craciun <diana.craciun@....com>,
        Cristian Sovaiala <cristian.sovaiala@...escale.com>
Subject: Re: [PATCH] bus: fsl-mc: added missing fields to
 dprc_rsp_get_obj_region structure

On Tue, Nov 24, 2020 at 01:12:00PM +0200, laurentiu.tudor@....com wrote:
> From: Laurentiu Tudor <laurentiu.tudor@....com>
> 
> 'type' and 'flags' fields were missing from dprc_rsp_get_obj_region
> structure therefore the MC Bus driver was not receiving proper flags
> from MC like DPRC_REGION_CACHEABLE.
> 
> Signed-off-by: Cristian Sovaiala <cristian.sovaiala@...escale.com>
> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com>

Reviewed-by: Ioana Ciornei <ioana.ciornei@....com>

> ---
>  drivers/bus/fsl-mc/dprc.c           | 2 ++
>  drivers/bus/fsl-mc/fsl-mc-private.h | 5 +++--
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/bus/fsl-mc/dprc.c b/drivers/bus/fsl-mc/dprc.c
> index 57b097caf255..27b0a01bad9b 100644
> --- a/drivers/bus/fsl-mc/dprc.c
> +++ b/drivers/bus/fsl-mc/dprc.c
> @@ -576,6 +576,8 @@ int dprc_get_obj_region(struct fsl_mc_io *mc_io,
>  	rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
>  	region_desc->base_offset = le64_to_cpu(rsp_params->base_offset);
>  	region_desc->size = le32_to_cpu(rsp_params->size);
> +	region_desc->type = rsp_params->type;
> +	region_desc->flags = le32_to_cpu(rsp_params->flags);
>  	if (dprc_major_ver > 6 || (dprc_major_ver == 6 && dprc_minor_ver >= 3))
>  		region_desc->base_address = le64_to_cpu(rsp_params->base_addr);
>  	else
> diff --git a/drivers/bus/fsl-mc/fsl-mc-private.h b/drivers/bus/fsl-mc/fsl-mc-private.h
> index 85ca5fdee581..c932387641fa 100644
> --- a/drivers/bus/fsl-mc/fsl-mc-private.h
> +++ b/drivers/bus/fsl-mc/fsl-mc-private.h
> @@ -211,12 +211,13 @@ struct dprc_cmd_get_obj_region {
>  
>  struct dprc_rsp_get_obj_region {
>  	/* response word 0 */
> -	__le64 pad;
> +	__le64 pad0;
>  	/* response word 1 */
>  	__le64 base_offset;
>  	/* response word 2 */
>  	__le32 size;
> -	__le32 pad2;
> +	u8 type;
> +	u8 pad2[3];
>  	/* response word 3 */
>  	__le32 flags;
>  	__le32 pad3;
> -- 
> 2.17.1
>