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

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Date:   Thu,  7 Dec 2023 13:05:44 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     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: [PATCH 2/3] nvdimm/dimm_devs: fix kernel-doc for function params

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, otherwise an
+ * ND_CMD_* status code.
  */
 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)