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media: dvb-core: dmxdevfilter must always flush bufs

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Currently the buffers are being filled until full, which works fine
for the transport stream, but not when reading sections, those have
to be returned to userspace immediately, otherwise dvbv5-scan will
just wait forever.

Add a 'flush' argument to dvb_vb2_fill_buffer to indicate whether
the buffer must be flushed or wait until it is full.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil 2025-06-05 08:57:35 +02:00 • committed by Mauro Carvalho Chehab
parent 8f0b4cce44
commit c4e620eccb
3 changed files with 11 additions and 8 deletions
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6
include/media/dvb_vb2.h
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@ -124,7 +124,7 @@ static inline int dvb_vb2_release(struct dvb_vb2_ctx *ctx)
return 0;
};
#define dvb_vb2_is_streaming(ctx) (0)
#define dvb_vb2_fill_buffer(ctx, file, wait, flags) (0)
#define dvb_vb2_fill_buffer(ctx, file, wait, flags, flush) (0)
static inline __poll_t dvb_vb2_poll(struct dvb_vb2_ctx *ctx,
struct file *file,
@ -166,10 +166,12 @@ int dvb_vb2_is_streaming(struct dvb_vb2_ctx *ctx);
* @buffer_flags:
* pointer to buffer flags as defined by &enum dmx_buffer_flags.
* can be NULL.
* @flush: flush the buffer, even if it isn't full.
*/
int dvb_vb2_fill_buffer(struct dvb_vb2_ctx *ctx,
const unsigned char *src, int len,
enum dmx_buffer_flags *buffer_flags);
enum dmx_buffer_flags *buffer_flags,
bool flush);
/**
* dvb_vb2_poll - Wrapper to vb2_core_streamon() for Digital TV