On Mon, 7 Feb 2022 12:59:22 +0000 Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote: > The buffer-dma code was using two queues, incoming and outgoing, to > manage the state of the blocks in use. > > While this totally works, it adds some complexity to the code, > especially since the code only manages 2 blocks. It is much easier to > just check each block's state manually, and keep a counter for the next > block to dequeue. > > Since the new DMABUF based API wouldn't use the outgoing queue anyway, > getting rid of it now makes the upcoming changes simpler. > > With this change, the IIO_BLOCK_STATE_DEQUEUED is now useless, and can > be removed. > > v2: - Only remove the outgoing queue, and keep the incoming queue, as we > want the buffer to start streaming data as soon as it is enabled. > - Remove IIO_BLOCK_STATE_DEQUEUED, since it is now functionally the > same as IIO_BLOCK_STATE_DONE. > > Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> > --- Trivial process thing but change log should be here, not above as we don't want it to end up in the main git log. > drivers/iio/buffer/industrialio-buffer-dma.c | 44 ++++++++++---------- > include/linux/iio/buffer-dma.h | 7 ++-- > 2 files changed, 26 insertions(+), 25 deletions(-) >
