staging: comedi: pcmmio: introduce pcmmio_dio_write()

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The paged registers in the asic need to be spinlock protected to
ensure that the page is not changed while writing to the registers.

Introduce a helper function to make sure the spinlock is used.

Use the new helper in pcmmio_reset(). This is one of the places where
the spinlock is not used.

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 15:30:59 -07:00 • committed by Greg Kroah-Hartman

parent 83d55bd03f

commit 4edac4a4da

1 changed files with 30 additions and 19 deletions

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drivers/staging/comedi/drivers/pcmmio.c

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