linux-kernel - [PATCH v4,05/22] dma-buf: heaps: Deduplicate docs and adopt common format

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Date: Mon, 29 Jan 2024 14:30:08 +0800
From: Yunfei Dong <yunfei.dong@...iatek.com>
To: Jeffrey Kardatzke <jkardatzke@...gle.com>,
	Nícolas F . R . A . Prado
	<nfraprado@...labora.com>, Nicolas Dufresne <nicolas.dufresne@...labora.com>,
	Hans Verkuil <hverkuil-cisco@...all.nl>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Benjamin Gaignard
	<benjamin.gaignard@...labora.com>, Nathan Hebert <nhebert@...omium.org>
CC: Chen-Yu Tsai <wenst@...omium.org>, Yong Wu <yong.wu@...iatek.com>,
	"Hsin-Yi Wang" <hsinyi@...omium.org>, Fritz Koenig <frkoenig@...omium.org>,
	"Daniel Vetter" <daniel@...ll.ch>, Steve Cho <stevecho@...omium.org>, Yunfei
 Dong <yunfei.dong@...iatek.com>, Sumit Semwal <sumit.semwal@...aro.org>,
	"Brian Starkey" <Brian.Starkey@....com>, John Stultz <jstultz@...gle.com>, "T
 . J . Mercier" <tjmercier@...gle.com>, Christian König
	<christian.koenig@....com>, Matthias Brugger <matthias.bgg@...il.com>,
	<dri-devel@...ts.freedesktop.org>, <linaro-mm-sig@...ts.linaro.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v4,05/22] dma-buf: heaps: Deduplicate docs and adopt common format

From: "T.J. Mercier" <tjmercier@...gle.com>

The docs for dma_heap_get_name were incorrect, and since they were
duplicated in the header they were wrong there too.

The docs formatting was inconsistent so I tried to make it more
consistent across functions since I'm already in here doing cleanup.

Remove multiple unused includes and alphabetize.

Signed-off-by: T.J. Mercier <tjmercier@...gle.com>
Signed-off-by: Yong Wu <yong.wu@...iatek.com>
[Yong: Just add a comment for "priv" to mute build warning]
Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
 drivers/dma-buf/dma-heap.c | 27 +++++++++++++++------------
 include/linux/dma-heap.h   | 21 +--------------------
 2 files changed, 16 insertions(+), 32 deletions(-)

diff --git a/drivers/dma-buf/dma-heap.c b/drivers/dma-buf/dma-heap.c
index 84ae708fafe7..22f6c193db0d 100644
--- a/drivers/dma-buf/dma-heap.c
+++ b/drivers/dma-buf/dma-heap.c
@@ -7,17 +7,15 @@
  */
 
 #include <linux/cdev.h>
-#include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/dma-buf.h>
+#include <linux/dma-heap.h>
 #include <linux/err.h>
-#include <linux/xarray.h>
 #include <linux/list.h>
-#include <linux/slab.h>
 #include <linux/nospec.h>
-#include <linux/uaccess.h>
 #include <linux/syscalls.h>
-#include <linux/dma-heap.h>
+#include <linux/uaccess.h>
+#include <linux/xarray.h>
 #include <uapi/linux/dma-heap.h>
 
 #define DEVNAME "dma_heap"
@@ -28,9 +26,10 @@
  * struct dma_heap - represents a dmabuf heap in the system
  * @name:		used for debugging/device-node name
  * @ops:		ops struct for this heap
- * @heap_devt		heap device node
- * @list		list head connecting to list of heaps
- * @heap_cdev		heap char device
+ * @priv:		private data for this heap
+ * @heap_devt:		heap device node
+ * @list:		list head connecting to list of heaps
+ * @heap_cdev:		heap char device
  *
  * Represents a heap of memory from which buffers can be made.
  */
@@ -193,11 +192,11 @@ static const struct file_operations dma_heap_fops = {
 };
 
 /**
- * dma_heap_get_drvdata() - get per-subdriver data for the heap
+ * dma_heap_get_drvdata - get per-heap driver data
  * @heap: DMA-Heap to retrieve private data for
  *
  * Returns:
- * The per-subdriver data for the heap.
+ * The per-heap data for the heap.
  */
 void *dma_heap_get_drvdata(struct dma_heap *heap)
 {
@@ -205,8 +204,8 @@ void *dma_heap_get_drvdata(struct dma_heap *heap)
 }
 
 /**
- * dma_heap_get_name() - get heap name
- * @heap: DMA-Heap to retrieve private data for
+ * dma_heap_get_name - get heap name
+ * @heap: DMA-Heap to retrieve the name of
  *
  * Returns:
  * The char* for the heap name.
@@ -216,6 +215,10 @@ const char *dma_heap_get_name(struct dma_heap *heap)
 	return heap->name;
 }
 
+/**
+ * dma_heap_add - adds a heap to dmabuf heaps
+ * @exp_info: information needed to register this heap
+ */
 struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info)
 {
 	struct dma_heap *heap, *h, *err_ret;
diff --git a/include/linux/dma-heap.h b/include/linux/dma-heap.h
index 0c05561cad6e..fbe86ec889a8 100644
--- a/include/linux/dma-heap.h
+++ b/include/linux/dma-heap.h
@@ -9,14 +9,13 @@
 #ifndef _DMA_HEAPS_H
 #define _DMA_HEAPS_H
 
-#include <linux/cdev.h>
 #include <linux/types.h>
 
 struct dma_heap;
 
 /**
  * struct dma_heap_ops - ops to operate on a given heap
- * @allocate:		allocate dmabuf and return struct dma_buf ptr
+ * @allocate:	allocate dmabuf and return struct dma_buf ptr
  *
  * allocate returns dmabuf on success, ERR_PTR(-errno) on error.
  */
@@ -41,28 +40,10 @@ struct dma_heap_export_info {
 	void *priv;
 };
 
-/**
- * dma_heap_get_drvdata() - get per-heap driver data
- * @heap: DMA-Heap to retrieve private data for
- *
- * Returns:
- * The per-heap data for the heap.
- */
 void *dma_heap_get_drvdata(struct dma_heap *heap);
 
-/**
- * dma_heap_get_name() - get heap name
- * @heap: DMA-Heap to retrieve private data for
- *
- * Returns:
- * The char* for the heap name.
- */
 const char *dma_heap_get_name(struct dma_heap *heap);
 
-/**
- * dma_heap_add - adds a heap to dmabuf heaps
- * @exp_info:		information needed to register this heap
- */
 struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info);
 
 #endif /* _DMA_HEAPS_H */
-- 
2.18.0