staging: comedi: comedi_buf: clarify comedi_buf_read_free()

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

Clarify the check to make sure the number of bytes to free is not
more than the number of bytes allocated.

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 13:31:16 -07:00 • committed by Greg Kroah-Hartman

parent 034cbd1792

commit 3abfa1066b

1 changed files with 10 additions and 5 deletions

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drivers/staging/comedi/comedi_buf.c

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