staging: comedi: pcmmio: return error if ao conversion times out

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Rename wait_dac_ready() so it has namespace associated with the
driver.

Fix the function so it returns an errno if the conversion times
out. Propogate this errno if it happens.

Define the analog output status register to remove the magic numbers.

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 2013-12-09 15:30:48 -07:00 • committed by Greg Kroah-Hartman

parent 68533c7b8e

commit 6f216c966c

1 changed files with 21 additions and 14 deletions

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drivers/staging/comedi/drivers/pcmmio.c

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