Re: [PATCH v3 2/8] cxl: Update prototype of function get_support_feature_info()

[Dave Jiang <dave.jiang@intel.com>]

On 4/7/25 10:49 AM, shiju.jose@huawei.com wrote:
> From: Shiju Jose <shiju.jose@huawei.com>
> 
> Add following changes to function get_support_feature_info()
> 1. Make generic to share between cxl-fwctl and cxl-edac paths.
> 2. Rename get_support_feature_info() to cxl_feature_info()
> 3. Change parameter const struct fwctl_rpc_cxl *rpc_in to
>    const uuid_t *uuid.
> 
> Suggested-by: Dan Williams <dan.j.williams@intel.com>
> Signed-off-by: Shiju Jose <shiju.jose@huawei.com>

Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> ---
>  drivers/cxl/core/core.h     |  2 ++
>  drivers/cxl/core/features.c | 17 +++++++----------
>  2 files changed, 9 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/cxl/core/core.h b/drivers/cxl/core/core.h
> index 15699299dc11..1d96e7acf9cc 100644
> --- a/drivers/cxl/core/core.h
> +++ b/drivers/cxl/core/core.h
> @@ -124,6 +124,8 @@ int cxl_acpi_get_extended_linear_cache_size(struct resource *backing_res,
>  					    int nid, resource_size_t *size);
>  
>  #ifdef CONFIG_CXL_FEATURES
> +struct cxl_feat_entry *
> +cxl_feature_info(struct cxl_features_state *cxlfs, const uuid_t *uuid);
>  size_t cxl_get_feature(struct cxl_mailbox *cxl_mbox, const uuid_t *feat_uuid,
>  		       enum cxl_get_feat_selection selection,
>  		       void *feat_out, size_t feat_out_size, u16 offset,
> diff --git a/drivers/cxl/core/features.c b/drivers/cxl/core/features.c
> index f4daefe3180e..35c91f14c761 100644
> --- a/drivers/cxl/core/features.c
> +++ b/drivers/cxl/core/features.c
> @@ -355,17 +355,11 @@ static void cxlctl_close_uctx(struct fwctl_uctx *uctx)
>  {
>  }
>  
> -static struct cxl_feat_entry *
> -get_support_feature_info(struct cxl_features_state *cxlfs,
> -			 const struct fwctl_rpc_cxl *rpc_in)
> +struct cxl_feat_entry *
> +cxl_feature_info(struct cxl_features_state *cxlfs,
> +		 const uuid_t *uuid)
>  {
>  	struct cxl_feat_entry *feat;
> -	const uuid_t *uuid;
> -
> -	if (rpc_in->op_size < sizeof(uuid))
> -		return ERR_PTR(-EINVAL);
> -
> -	uuid = &rpc_in->set_feat_in.uuid;
>  
>  	for (int i = 0; i < cxlfs->entries->num_features; i++) {
>  		feat = &cxlfs->entries->ent[i];
> @@ -547,7 +541,10 @@ static bool cxlctl_validate_set_features(struct cxl_features_state *cxlfs,
>  	struct cxl_feat_entry *feat;
>  	u32 flags;
>  
> -	feat = get_support_feature_info(cxlfs, rpc_in);
> +	if (rpc_in->op_size < sizeof(uuid_t))
> +		return ERR_PTR(-EINVAL);
> +
> +	feat = cxl_feature_info(cxlfs, &rpc_in->set_feat_in.uuid);
>  	if (IS_ERR(feat))
>  		return false;
>