staging: comedi: comedi_buf: cleanup comedi_buf_munge()

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Refactor this function so there is a single return point and only
one BUG_ON check. The BUG_ON needs to be looked at to see if it
can be safely removed.

Clarify the test in the munge loop that checks for a block copy
that would extend pass the end of the prealloc_buf.

Reword the comment about the need for the smp_wmb().

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

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H Hartley Sweeten 2013-01-09 13:29:19 -07:00 • committed by Greg Kroah-Hartman

parent 47181eab71

commit 8d4be66947

1 changed files with 41 additions and 33 deletions

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drivers/staging/comedi/comedi_buf.c

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