diff options
| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2020-09-11 05:07:58 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-09-14 15:28:06 +0200 |
| commit | 129134e5415d46f38b9978b3809af94ed649b57d (patch) | |
| tree | 2024ff46ccc7024e47a7f7e66f201dbf6f3ee068 /drivers/media/dvb-core | |
| parent | 288eceb0858323d66bff03cf386630a797b248ad (diff) | |
media: media/v4l2: remove V4L2_FLAG_MEMORY_NON_CONSISTENT flag
The patch partially reverts some of the UAPI bits of the buffer
cache management hints. Namely, the queue consistency (memory
coherency) user-space hint because, as it turned out, the kernel
implementation of this feature was misusing DMA_ATTR_NON_CONSISTENT.
The patch reverts both kernel and user space parts: removes the
DMA consistency attr functions, rolls back changes to v4l2_requestbuffers,
v4l2_create_buffers structures and corresponding UAPI functions
(plus compat32 layer) and cleans up the documentation.
[hverkuil: fixed a few typos in the commit log]
[hverkuil: fixed vb2_core_reqbufs call in drivers/media/dvb-core/dvb_vb2.c]
[mchehab: fixed a typo in the commit log: revers->reverts]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/dvb-core')
| -rw-r--r-- | drivers/media/dvb-core/dvb_vb2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c index 959d110407a4..6974f1731529 100644 --- a/drivers/media/dvb-core/dvb_vb2.c +++ b/drivers/media/dvb-core/dvb_vb2.c @@ -342,7 +342,7 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req) ctx->buf_siz = req->size; ctx->buf_cnt = req->count; - ret = vb2_core_reqbufs(&ctx->vb_q, VB2_MEMORY_MMAP, 0, &req->count); + ret = vb2_core_reqbufs(&ctx->vb_q, VB2_MEMORY_MMAP, &req->count); if (ret) { ctx->state = DVB_VB2_STATE_NONE; dprintk(1, "[%s] count=%d size=%d errno=%d\n", ctx->name, |