mirror of https://gitee.com/openkylin/linux.git
f95fc014e0
The Documentation/DMA-API-HOWTO.txt states that dma_map_sg returns the
numer of the created entries in the DMA address space. However the
subsequent calls to dma_sync_sg_for_{device,cpu} and dma_unmap_sg must be
called with the original number of entries passed to dma_map_sg. The
sg_table->nents in turn holds the result of the dma_map_sg call as stated
in include/linux/scatterlist.h. Adapt the code to obey those rules.
While touching this code, update it to use the modern DMA_FROM_DEVICE
definitions.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| cx25821-alsa.c | ||
| cx25821-audio.h | ||
| cx25821-biffuncs.h | ||
| cx25821-cards.c | ||
| cx25821-core.c | ||
| cx25821-gpio.c | ||
| cx25821-i2c.c | ||
| cx25821-medusa-defines.h | ||
| cx25821-medusa-reg.h | ||
| cx25821-medusa-video.c | ||
| cx25821-medusa-video.h | ||
| cx25821-reg.h | ||
| cx25821-sram.h | ||
| cx25821-video.c | ||
| cx25821-video.h | ||
| cx25821.h | ||