From: Samuel Li <Samuel.Li@amd.com>
Date: Mon, 26 Mar 2018 15:22:25 -0400
Subject: drm: add parameter explanation for some gem dmabuf_ops
Git-commit: 790861cc34f872015806cef311d5c64cc3167a0d
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
To reduce some warnings.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Samuel Li <Samuel.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1522092145-12645-1-git-send-email-Samuel.Li@amd.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/drm_prime.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -331,6 +331,9 @@ EXPORT_SYMBOL(drm_gem_map_dma_buf);
/**
* drm_gem_unmap_dma_buf - unmap_dma_buf implementation for GEM
+ * @attach: attachment to unmap buffer from
+ * @sgt: scatterlist info of the buffer to unmap
+ * @dir: direction of DMA transfer
*
* Not implemented. The unmap is done at drm_gem_map_detach(). This can be
* used as the &dma_buf_ops.unmap_dma_buf callback.
@@ -429,6 +432,8 @@ EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
/**
* drm_gem_dmabuf_kmap_atomic - map_atomic implementation for GEM
+ * @dma_buf: buffer to be mapped
+ * @page_num: page number within the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.map_atomic callback.
*/
@@ -441,6 +446,9 @@ EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic
/**
* drm_gem_dmabuf_kunmap_atomic - unmap_atomic implementation for GEM
+ * @dma_buf: buffer to be unmapped
+ * @page_num: page number within the buffer
+ * @addr: virtual address of the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.unmap_atomic callback.
*/
@@ -453,6 +461,8 @@ EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atom
/**
* drm_gem_dmabuf_kmap - map implementation for GEM
+ * @dma_buf: buffer to be mapped
+ * @page_num: page number within the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.map callback.
*/
@@ -464,6 +474,9 @@ EXPORT_SYMBOL(drm_gem_dmabuf_kmap);
/**
* drm_gem_dmabuf_kunmap - unmap implementation for GEM
+ * @dma_buf: buffer to be unmapped
+ * @page_num: page number within the buffer
+ * @addr: virtual address of the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.unmap callback.
*/