staging: comedi: cb_pcidas: introduce cb_pcidas64_ao_fill_buffer()

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Introduce a helper function to read the analog output samples from the
async buffer.

This fixes a bug in load_ao_dma_buffer(). That function was decrementing
the 'ao_count' by the number of bytes, not the number of samples, that
were read from the async buffer.

Use comedi_buf_read_samples() to read the analog output samples from
the async buffer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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H Hartley Sweeten 2014-10-22 14:36:37 -07:00 • committed by Greg Kroah-Hartman

parent 2cc9854caf

commit 7bd7d90562

1 changed files with 47 additions and 32 deletions

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drivers/staging/comedi/drivers/cb_pcidas64.c

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