From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 22 Oct 2014 22:36:34 +0000 (-0700)
Subject: staging: comedi: adl_pci9118: use comedi_buf_write_samples()
X-Git-Tag: omap-for-v3.19/fixes-rc1~73^2~768
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28e8c8984c95202cf09ee3d27becf4d1494350ee;p=pandora-kernel.git

staging: comedi: adl_pci9118: use comedi_buf_write_samples()

Use comedi_buf_write_samples() to add the samples to the async buffer.
The number of bytes to add is determined automatically based on the
number of samples and the bytes_per_sample().

Change the return type of move_block_from_dma() to void and remove the
unnecessary check of the return value of comedi_buf_write_samples().
The callers don't check the return and it's really not necessary. If
comedi_buf_write_samples() fails to allocate enough space in the async
buffer to add all the samples it sets the COMEDI_CB_OVERFLOW event.
This will cause the async command to (*cancel) when the events are
handled.

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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