diff options
| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2022-07-14 09:57:37 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-07-14 09:57:37 +0200 |
| commit | f83d9396d1f63048c423efa00e4e244da10a35fd (patch) | |
| tree | 48da2cf9b20cc7049c92dd4a7dd74be11add86e5 /include/linux/dmaengine.h | |
| parent | drm/rockchip: Change register space names in vop2 (diff) | |
| parent | Merge tag 'topic/nouveau-misc-2022-07-13-1' of git://anongit.freedesktop.org/drm/drm into drm-next (diff) | |
Merge drm/drm-next into drm-misc-next-fixes
Backmerging from drm/drm-next for the final fixes that will go
into v5.20.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 842d4f7ca752..b46b88e6aa0d 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -870,7 +870,6 @@ struct dma_device { struct device *dev; struct module *owner; struct ida chan_ida; - struct mutex chan_mutex; /* to protect chan_ida */ u32 src_addr_widths; u32 dst_addr_widths; @@ -1031,6 +1030,14 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma( return chan->device->device_prep_interleaved_dma(chan, xt, flags); } +/** + * dmaengine_prep_dma_memset() - Prepare a DMA memset descriptor. + * @chan: The channel to be used for this descriptor + * @dest: Address of buffer to be set + * @value: Treated as a single byte value that fills the destination buffer + * @len: The total size of dest + * @flags: DMA engine flags + */ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memset( struct dma_chan *chan, dma_addr_t dest, int value, size_t len, unsigned long flags) |