linux-kernel - Re: [PATCH 2/3] nvdimm/dimm_devs: fix kernel-doc for function params

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Message-ID: <6584bc064ea54_5580229435@iweiny-mobl.notmuch>
Date: Thu, 21 Dec 2023 14:28:22 -0800
From: Ira Weiny <ira.weiny@...el.com>
To: Randy Dunlap <rdunlap@...radead.org>, <linux-kernel@...r.kernel.org>
CC: Randy Dunlap <rdunlap@...radead.org>, Dan Williams
	<dan.j.williams@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, "Dave
 Jiang" <dave.jiang@...el.com>, Ira Weiny <ira.weiny@...el.com>,
	<nvdimm@...ts.linux.dev>
Subject: Re: [PATCH 2/3] nvdimm/dimm_devs: fix kernel-doc for function params

Randy Dunlap wrote:
> Adjust kernel-doc notation to prevent warnings when using -Wall.
> 
> dimm_devs.c:59: warning: Function parameter or member 'ndd' not described in 'nvdimm_init_nsarea'
> dimm_devs.c:59: warning: Excess function parameter 'nvdimm' description in 'nvdimm_init_nsarea'
> dimm_devs.c:59: warning: No description found for return value of 'nvdimm_init_nsarea'
> dimm_devs.c:728: warning: No description found for return value of 'nd_pmem_max_contiguous_dpa'
> dimm_devs.c:773: warning: No description found for return value of 'nd_pmem_available_dpa'
> dimm_devs.c:844: warning: Function parameter or member 'ndd' not described in 'nvdimm_allocated_dpa'
> dimm_devs.c:844: warning: Excess function parameter 'nvdimm' description in 'nvdimm_allocated_dpa'
> dimm_devs.c:844: warning: No description found for return value of 'nvdimm_allocated_dpa'
> 
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Dan Williams <dan.j.williams@...el.com>
> Cc: Vishal Verma <vishal.l.verma@...el.com>
> Cc: Dave Jiang <dave.jiang@...el.com>
> Cc: Ira Weiny <ira.weiny@...el.com>
> Cc: nvdimm@...ts.linux.dev
> ---
>  drivers/nvdimm/dimm_devs.c |   14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff -- a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c
> --- a/drivers/nvdimm/dimm_devs.c
> +++ b/drivers/nvdimm/dimm_devs.c
> @@ -53,7 +53,10 @@ static int validate_dimm(struct nvdimm_d
>  
>  /**
>   * nvdimm_init_nsarea - determine the geometry of a dimm's namespace area
> - * @nvdimm: dimm to initialize
> + * @ndd: dimm to initialize
> + *
> + * Returns: %0 if the area is already valid, -errno on error,

This is good...

> ...otherwise an
> + * ND_CMD_* status code.

I don't see where any of the ->ndctl() calls return an ND_CMD_* status
code.  What am I missing?

The rest looks good,
Ira

>   */
>  int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd)
>  {
> @@ -722,6 +725,9 @@ static unsigned long dpa_align(struct nd
>   *			   contiguous unallocated dpa range.
>   * @nd_region: constrain available space check to this reference region
>   * @nd_mapping: container of dpa-resource-root + labels
> + *
> + * Returns: %0 if there is an alignment error, otherwise the max
> + *		unallocated dpa range
>   */
>  resource_size_t nd_pmem_max_contiguous_dpa(struct nd_region *nd_region,
>  					   struct nd_mapping *nd_mapping)
> @@ -767,6 +773,8 @@ resource_size_t nd_pmem_max_contiguous_d
>   *
>   * Validate that a PMEM label, if present, aligns with the start of an
>   * interleave set.
> + *
> + * Returns: %0 if there is an alignment error, otherwise the unallocated dpa
>   */
>  resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
>  				      struct nd_mapping *nd_mapping)
> @@ -836,8 +844,10 @@ struct resource *nvdimm_allocate_dpa(str
>  
>  /**
>   * nvdimm_allocated_dpa - sum up the dpa currently allocated to this label_id
> - * @nvdimm: container of dpa-resource-root + labels
> + * @ndd: container of dpa-resource-root + labels
>   * @label_id: dpa resource name of the form pmem-<human readable uuid>
> + *
> + * Returns: sum of the dpa allocated to the label_id
>   */
>  resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
>  		struct nd_label_id *label_id)