Including; add missing documentation for function arguments, 
re-ordering
of #defines i.e. not placed between kerneldoc headers and the functions
they are documenting, demotion of file header/comment from kerneldoc
format and removal of documentation for non-existent args.

Fixes the following W=1 kernel build warnings:

 drivers/misc/genwqe/card_dev.c:33: warning: Function parameter or
member 'cd' not described in 'genwqe_open_files'
 drivers/misc/genwqe/card_dev.c:98: warning: Function parameter or
member 'virt_addr' not described in 'genwqe_search_pin'
 drivers/misc/genwqe/card_dev.c:98: warning: Excess function parameter
'dma_addr' description in 'genwqe_search_pin'
 drivers/misc/genwqe/card_dev.c:154: warning: Function parameter or
member 'virt_addr' not described in '__genwqe_search_mapping'
 drivers/misc/genwqe/card_dev.c:256: warning: Function parameter or
member 'cd' not described in 'genwqe_kill_fasync'
 drivers/misc/genwqe/card_dev.c:256: warning: Function parameter or
member 'sig' not described in 'genwqe_kill_fasync'
 drivers/misc/genwqe/card_dev.c:387: warning: Function parameter or
member 'vma' not described in 'genwqe_vma_close'
 drivers/misc/genwqe/card_dev.c:430: warning: Function parameter or
member 'filp' not described in 'genwqe_mmap'
 drivers/misc/genwqe/card_dev.c:430: warning: Function parameter or
member 'vma' not described in 'genwqe_mmap'
 drivers/misc/genwqe/card_dev.c:495: warning: Excess function
parameter 'cd' description in 'FLASH_BLOCK'
 drivers/misc/genwqe/card_dev.c:495: warning: Excess function
parameter 'load' description in 'FLASH_BLOCK'
 drivers/misc/genwqe/card_dev.c:827: warning: Function parameter or
member 'cfile' not described in 'ddcb_cmd_cleanup'
 drivers/misc/genwqe/card_dev.c:827: warning: Function parameter or
member 'req' not described in 'ddcb_cmd_cleanup'
 drivers/misc/genwqe/card_dev.c:854: warning: Function parameter or
member 'cfile' not described in 'ddcb_cmd_fixups'
 drivers/misc/genwqe/card_dev.c:854: warning: Function parameter or
member 'req' not described in 'ddcb_cmd_fixups'
 drivers/misc/genwqe/card_dev.c:984: warning: Function parameter or
member 'cfile' not described in 'genwqe_execute_ddcb'
 drivers/misc/genwqe/card_dev.c:984: warning: Function parameter or
member 'cmd' not described in 'genwqe_execute_ddcb'
 drivers/misc/genwqe/card_dev.c:1350: warning: Function parameter or
member 'cd' not described in 'genwqe_device_remove'

Cc: Michael Jung <redacted>
Cc: Michael Ruettger <redacted>
Cc: Frank Haverkamp <haver@linux.ibm.com>
Cc: Joerg-Stephan Vogt <redacted>
Signed-off-by: Lee Jones <redacted>
---
 drivers/misc/genwqe/card_dev.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/misc/genwqe/card_dev.c 

b/drivers/misc/genwqe/card_dev.c
index 040a0bda31254..55fc5b80e649f 100644

--- a/drivers/misc/genwqe/card_dev.c
+++ b/drivers/misc/genwqe/card_dev.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * IBM Accelerator Family 'GenWQE'
  *
  * (C) Copyright IBM Corp. 2013

@@ -87,7 +87,7 @@ static int genwqe_del_pin(struct genwqe_file *cfile,

struct dma_mapping *m)
  * @cfile:	Descriptor of opened file
  * @u_addr:	User virtual address
  * @size:	Size of buffer
- * @dma_addr:	DMA address to be updated
+ * @virt_addr:	Virtual address to be updated
  *
  * Return: Pointer to the corresponding mapping	NULL if not found
  */

@@ -144,6 +144,7 @@ static void __genwqe_del_mapping(struct genwqe_file 

*cfile,
  * @u_addr:	user virtual address
  * @size:	size of buffer
  * @dma_addr:	DMA address to be updated
+ * @virt_addr:	Virtual address to be updated
  * Return: Pointer to the corresponding mapping	NULL if not found
  */
 static struct dma_mapping *__genwqe_search_mapping(struct genwqe_file 
*cfile,

@@ -249,6 +250,8 @@ static void genwqe_remove_pinnings(struct

genwqe_file *cfile)

 /**
  * genwqe_kill_fasync() - Send signal to all processes with open 
GenWQE files
+ * @cd: GenWQE device information
+ * @sig: Signal to send out
  *
  * E.g. genwqe_send_signal(cd, SIGIO);
  */

@@ -380,6 +383,7 @@ static void genwqe_vma_open(struct vm_area_struct 

*vma)

 /**
  * genwqe_vma_close() - Called each time when vma is unmapped
+ * @vma: VMA area to close
  *
  * Free memory which got allocated by GenWQE mmap().
  */

@@ -416,6 +420,8 @@ static const struct vm_operations_struct 

genwqe_vma_ops = {

 /**
  * genwqe_mmap() - Provide contignous buffers to userspace
+ * @filp:	File pointer (unused)
+ * @vma:	VMA area to map
  *
  * We use mmap() to allocate contignous buffers used for DMA
  * transfers. After the buffer is allocated we remap it to user-space

@@ -484,16 +490,15 @@ static int genwqe_mmap(struct file *filp, struct

vm_area_struct *vma)
 	return rc;
 }

+#define	FLASH_BLOCK	0x40000	/* we use 256k blocks */
+
 /**
  * do_flash_update() - Excute flash update (write image or CVPD)
- * @cd:        genwqe device
+ * @cfile:	Descriptor of opened file
  * @load:      details about image load
  *
  * Return: 0 if successful
  */
-
-#define	FLASH_BLOCK	0x40000	/* we use 256k blocks */
-
 static int do_flash_update(struct genwqe_file *cfile,
 			   struct genwqe_bitstream *load)
 {

@@ -820,6 +825,8 @@ static int genwqe_unpin_mem(struct genwqe_file

*cfile, struct genwqe_mem *m)

 /**
  * ddcb_cmd_cleanup() - Remove dynamically created fixup entries
+ * @cfile:	Descriptor of opened file
+ * @req:	DDCB work request
  *
  * Only if there are any. Pinnings are not removed.
  */

@@ -844,6 +851,8 @@ static int ddcb_cmd_cleanup(struct genwqe_file

*cfile, struct ddcb_requ *req)

 /**
  * ddcb_cmd_fixups() - Establish DMA fixups/sglists for user memory 
references
+ * @cfile:	Descriptor of opened file
+ * @req:	DDCB work request
  *
  * Before the DDCB gets executed we need to handle the fixups. We
  * replace the user-space addresses with DMA addresses or do

@@ -974,6 +983,8 @@ static int ddcb_cmd_fixups(struct genwqe_file

*cfile, struct ddcb_requ *req)

 /**
  * genwqe_execute_ddcb() - Execute DDCB using userspace address fixups
+ * @cfile:	Descriptor of opened file
+ * @cmd:        Command identifier (passed from user)
  *
  * The code will build up the translation tables or lookup the
  * contignous memory allocation table to find the right translations

@@ -1339,6 +1350,7 @@ static int

genwqe_inform_and_stop_processes(struct genwqe_dev *cd)

 /**
  * genwqe_device_remove() - Remove genwqe's char device
+ * @cd: GenWQE device information
  *
  * This function must be called after the client devices are removed
  * because it will free the major/minor number range for the genwqe