From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Fri, 22 Mar 2013 16:57:48 +0000 (-0700)
Subject: staging: comedi: ni_labpc: fix labpc_eeprom_insn_read()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1330af4c7deedd0b6d1ba43734d7e4eb1a83a491;p=linux-beck.git

staging: comedi: ni_labpc: fix labpc_eeprom_insn_read()

The comedi core expects the (*insn_read) operations to read insn->n
values and return the number of values actually read.

Make this function work like the core expects.

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

diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c
index 234f85e0f2f2..0afcede602ec 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -1591,10 +1591,13 @@ static int labpc_eeprom_insn_read(struct comedi_device *dev,
 				  unsigned int *data)
 {
 	struct labpc_private *devpriv = dev->private;
+	unsigned int chan = CR_CHAN(insn->chanspec);
+	int i;
 
-	data[0] = devpriv->eeprom_data[CR_CHAN(insn->chanspec)];
+	for (i = 0; i < insn->n; i++)
+		data[i] = devpriv->eeprom_data[chan];
 
-	return 1;
+	return insn->n;
 }
 
 int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,