ubifs: fix kernel-doc warnings

Fix kernel-doc warnings found when using "W=1".

file.c:1385: warning: Excess function parameter 'time' description in 'ubifs_update_time'
and 9 warnings like this one:
file.c:326: warning: No description found for return value of 'allocate_budget'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202312030417.66c5PwHj-lkp@intel.com/
Cc: Richard Weinberger <richard@nod.at>
Cc: linux-mtd@lists.infradead.org
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
[rw: massaged patch to resolve conflict ]
Signed-off-by: Richard Weinberger <richard@nod.at>

fs/ubifs/file.c

@@ -318,8 +318,9 @@ static int write_begin_slow(struct address_space *mapping,
  * This is a helper function for 'ubifs_write_begin()' which allocates budget
  * for the operation. The budget is allocated differently depending on whether
  * this is appending, whether the page is dirty or not, and so on. This
- * function leaves the @ui->ui_mutex locked in case of appending. Returns zero
- * in case of success and %-ENOSPC in case of failure.
+ * function leaves the @ui->ui_mutex locked in case of appending.
+ *
+ * Returns: %0 in case of success and %-ENOSPC in case of failure.
  */
 static int allocate_budget(struct ubifs_info *c, struct page *page,
 			   struct ubifs_inode *ui, int appending)
@@ -600,7 +601,7 @@ out:
  * @bu: bulk-read information
  * @n: next zbranch slot
  *
- * This function returns %0 on success and a negative error code on failure.
+ * Returns: %0 on success and a negative error code on failure.
  */
 static int populate_page(struct ubifs_info *c, struct page *page,
 			 struct bu_info *bu, int *n)
@@ -711,7 +712,7 @@ out_err:
  * @bu: bulk-read information
  * @page1: first page to read
  *
- * This function returns %1 if the bulk-read is done, otherwise %0 is returned.
+ * Returns: %1 if the bulk-read is done, otherwise %0 is returned.
  */
 static int ubifs_do_bulk_read(struct ubifs_info *c, struct bu_info *bu,
 			      struct page *page1)
@@ -821,7 +822,9 @@ out_bu_off:
  * Some flash media are capable of reading sequentially at faster rates. UBIFS
  * bulk-read facility is designed to take advantage of that, by reading in one
  * go consecutive data nodes that are also located consecutively in the same
- * LEB. This function returns %1 if a bulk-read is done and %0 otherwise.
+ * LEB.
+ *
+ * Returns: %1 if a bulk-read is done and %0 otherwise.
  */
 static int ubifs_bulk_read(struct page *page)
 {
@@ -1109,7 +1112,9 @@ static void do_attr_changes(struct inode *inode, const struct iattr *attr)
  * @attr: inode attribute changes description
  *
  * This function implements VFS '->setattr()' call when the inode is truncated
- * to a smaller size. Returns zero in case of success and a negative error code
+ * to a smaller size.
+ *
+ * Returns: %0 in case of success and a negative error code
  * in case of failure.
  */
 static int do_truncation(struct ubifs_info *c, struct inode *inode,
@@ -1215,7 +1220,9 @@ out_budg:
  * @attr: inode attribute changes description
  *
  * This function implements VFS '->setattr()' call for all cases except
- * truncations to smaller size. Returns zero in case of success and a negative
+ * truncations to smaller size.
+ *
+ * Returns: %0 in case of success and a negative
  * error code in case of failure.
  */
 static int do_setattr(struct ubifs_info *c, struct inode *inode,
@@ -1360,6 +1367,8 @@ out:
  * This helper function checks if the inode mtime/ctime should be updated or
  * not. If current values of the time-stamps are within the UBIFS inode time
  * granularity, they are not updated. This is an optimization.
+ *
+ * Returns: %1 if time update is needed, %0 if not
  */
 static inline int mctime_update_needed(const struct inode *inode,
 				       const struct timespec64 *now)
@@ -1375,11 +1384,12 @@ static inline int mctime_update_needed(const struct inode *inode,
 /**
  * ubifs_update_time - update time of inode.
  * @inode: inode to update
- * @time:  timespec structure to hold the current time value
  * @flags: time updating control flag determines updating
  *	    which time fields of @inode
  *
  * This function updates time of the inode.
+ *
+ * Returns: %0 for success or a negative error code otherwise.
  */
 int ubifs_update_time(struct inode *inode, int flags)
 {
@@ -1413,7 +1423,9 @@ int ubifs_update_time(struct inode *inode, int flags)
  * @inode: inode to update
  *
  * This function updates mtime and ctime of the inode if it is not equivalent to
- * current time. Returns zero in case of success and a negative error code in
+ * current time.
+ *
+ * Returns: %0 in case of success and a negative error code in
  * case of failure.
  */
 static int update_mctime(struct inode *inode)