staging: comedi: mite: remove mite member 'channel_allocated'

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An allocated mite_channel will have its 'ring' member initialized
to point to the mite_ring that will be used for DMA. A non-allocated
mite_channel will have a 'ring' member set to NULL, either by a
channel release or due to the initial kzalloc of the 'mite' struct.

Refactor the code to use the mite_chan->ring to detect in a channel
is allocated and remove the unnecessary member.

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 2016-05-02 10:11:41 -07:00 • committed by Greg Kroah-Hartman

parent ab55b5c9f2

commit 48a73aedd7

2 changed files with 8 additions and 10 deletions

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17

drivers/staging/comedi/drivers/mite.c

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1

drivers/staging/comedi/drivers/mite.h

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