From: Ian Abbott <abbotti@mev.co.uk>
Date: Fri, 31 Aug 2012 19:41:30 +0000 (+0100)
Subject: staging: comedi: das08: Correct AO output for das08jr-16-ao
X-Git-Tag: v3.6-rc6~21^2~9
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=61ed59ed09e6ad2b8395178ea5ad5f653bba08e3;p=~emulex%2Finfiniband.git

staging: comedi: das08: Correct AO output for das08jr-16-ao

Don't zero out bits 15..12 of the data value in `das08jr_ao_winsn()` as
that knobbles the upper three-quarters of the output range for the
'das08jr-16-ao' board.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c
index e5eb3b9ba17..67a914a10b5 100644
--- a/drivers/staging/comedi/drivers/das08.c
+++ b/drivers/staging/comedi/drivers/das08.c
@@ -378,7 +378,7 @@ das08jr_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
 	int chan;
 
 	lsb = data[0] & 0xff;
-	msb = (data[0] >> 8) & 0xf;
+	msb = (data[0] >> 8) & 0xff;
 
 	chan = CR_CHAN(insn->chanspec);