staging: comedi: comedi_buf: clarify comedi_buf_read_alloc()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Wed, 9 Jan 2013 20:30:49 +0000 (13:30 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 18 Jan 2013 00:53:59 +0000 (16:53 -0800)
commit034cbd17922a8b6c64b227360314167c15c1f031
tree91011a131484a8f13653f825801dc803d9b0451f
parent43f9137df461f6365f76b46f404fd6775eab7d51
staging: comedi: comedi_buf: clarify comedi_buf_read_alloc()

Clarify the check to make sure the number of bytes to allocate is
available.

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

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>
drivers/staging/comedi/comedi_buf.c