MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141

pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040

stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch

mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch

Signed-off-by: Andy Green <andy@openmoko.com>

1 files changed, 161 insertions, 0 deletions

diff --git a/drivers/staging/comedi/range.c b/drivers/staging/comedi/range.c
new file mode 100644
index 00000000000..61dc3cd6a9f
--- /dev/null
+++ b/drivers/staging/comedi/range.c
@@ -0,0 +1,161 @@
+/*
+    module/range.c
+    comedi routines for voltage ranges
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1997-8 David A. Schleef <ds@schleef.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "comedidev.h"
+#include <asm/uaccess.h>
+
+const comedi_lrange range_bipolar10 = { 1, {BIP_RANGE(10)} };
+const comedi_lrange range_bipolar5 = { 1, {BIP_RANGE(5)} };
+const comedi_lrange range_bipolar2_5 = { 1, {BIP_RANGE(2.5)} };
+const comedi_lrange range_unipolar10 = { 1, {UNI_RANGE(10)} };
+const comedi_lrange range_unipolar5 = { 1, {UNI_RANGE(5)} };
+const comedi_lrange range_unknown = { 1, {{0, 1000000, UNIT_none}} };
+
+/*
+   	COMEDI_RANGEINFO
+	range information ioctl
+
+	arg:
+		pointer to rangeinfo structure
+
+	reads:
+		range info structure
+
+	writes:
+		n comedi_krange structures to rangeinfo->range_ptr
+*/
+int do_rangeinfo_ioctl(comedi_device * dev, comedi_rangeinfo * arg)
+{
+	comedi_rangeinfo it;
+	int subd, chan;
+	const comedi_lrange *lr;
+	comedi_subdevice *s;
+
+	if (copy_from_user(&it, arg, sizeof(comedi_rangeinfo)))
+		return -EFAULT;
+	subd = (it.range_type >> 24) & 0xf;
+	chan = (it.range_type >> 16) & 0xff;
+
+	if (!dev->attached)
+		return -EINVAL;
+	if (subd >= dev->n_subdevices)
+		return -EINVAL;
+	s = dev->subdevices + subd;
+	if (s->range_table) {
+		lr = s->range_table;
+	} else if (s->range_table_list) {
+		if (chan >= s->n_chan)
+			return -EINVAL;
+		lr = s->range_table_list[chan];
+	} else {
+		return -EINVAL;
+	}
+
+	if (RANGE_LENGTH(it.range_type) != lr->length) {
+		DPRINTK("wrong length %d should be %d (0x%08x)\n",
+			RANGE_LENGTH(it.range_type), lr->length, it.range_type);
+		return -EINVAL;
+	}
+
+	if (copy_to_user(it.range_ptr, lr->range,
+			sizeof(comedi_krange) * lr->length))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int aref_invalid(comedi_subdevice * s, unsigned int chanspec)
+{
+	unsigned int aref;
+
+	// disable reporting invalid arefs... maybe someday
+	return 0;
+
+	aref = CR_AREF(chanspec);
+	switch (aref) {
+	case AREF_DIFF:
+		if (s->subdev_flags & SDF_DIFF)
+			return 0;
+		break;
+	case AREF_COMMON:
+		if (s->subdev_flags & SDF_COMMON)
+			return 0;
+		break;
+	case AREF_GROUND:
+		if (s->subdev_flags & SDF_GROUND)
+			return 0;
+		break;
+	case AREF_OTHER:
+		if (s->subdev_flags & SDF_OTHER)
+			return 0;
+		break;
+	default:
+		break;
+	}
+	DPRINTK("subdevice does not support aref %i", aref);
+	return 1;
+}
+
+/*
+   This function checks each element in a channel/gain list to make
+   make sure it is valid.
+*/
+int check_chanlist(comedi_subdevice * s, int n, unsigned int *chanlist)
+{
+	int i;
+	int chan;
+
+	if (s->range_table) {
+		for (i = 0; i < n; i++)
+			if (CR_CHAN(chanlist[i]) >= s->n_chan ||
+				CR_RANGE(chanlist[i]) >= s->range_table->length
+				|| aref_invalid(s, chanlist[i])) {
+				rt_printk
+					("bad chanlist[%d]=0x%08x n_chan=%d range length=%d\n",
+					i, chanlist[i], s->n_chan,
+					s->range_table->length);
+#if 0
+				for (i = 0; i < n; i++) {
+					printk("[%d]=0x%08x\n", i, chanlist[i]);
+				}
+#endif
+				return -EINVAL;
+			}
+	} else if (s->range_table_list) {
+		for (i = 0; i < n; i++) {
+			chan = CR_CHAN(chanlist[i]);
+			if (chan >= s->n_chan ||
+				CR_RANGE(chanlist[i]) >=
+				s->range_table_list[chan]->length
+				|| aref_invalid(s, chanlist[i])) {
+				rt_printk("bad chanlist[%d]=0x%08x\n", i,
+					chanlist[i]);
+				return -EINVAL;
+			}
+		}
+	} else {
+		rt_printk("comedi: (bug) no range type list!\n");
+		return -EINVAL;
+	}
+	return 0;
+}