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drm: add parameter explanation for some gem dmabuf_ops 

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
hifive-unleashed-5.1
Samuel Li 2018-03-26 15:22:25 -04:00 committed by Alex Deucher
parent e85d30060e
commit 790861cc34
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/drm_prime.c
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@ -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_atomic);
/**
* 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.
*/