staging: comedi: ni_stc.h: refactor 'adbits' boardinfo

For aesthetics, change the 'adbits' in the boardinfo to 'ai_maxdata'
to remove the need for the calculation of the subdevice 'maxdata'.

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>

5 files changed, 65 insertions, 65 deletions

diff --git a/drivers/staging/comedi/drivers/ni_atmio.c b/drivers/staging/comedi/drivers/ni_atmio.c
index 0f4dc5a..160e703 100644
--- a/drivers/staging/comedi/drivers/ni_atmio.c
+++ b/drivers/staging/comedi/drivers/ni_atmio.c
@@ -108,7 +108,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 44,
 		.isapnp_id	= 0x0000,	/* XXX unknown */
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 8192,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 800,
@@ -124,7 +124,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 25,
 		.isapnp_id	= 0x1900,
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 2048,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 2000,
@@ -140,7 +140,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 36,
 		.isapnp_id	= 0x2400,
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 10000,
@@ -155,7 +155,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 37,
 		.isapnp_id	= 0x2500,
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 10000,
@@ -171,7 +171,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 38,
 		.isapnp_id	= 0x2600,
 		.n_adchan	= 64,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 2048,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 2000,
@@ -187,7 +187,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 39,
 		.isapnp_id	= 0x2700,
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_8,
@@ -203,7 +203,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 50,
 		.isapnp_id	= 0x0000,	/* XXX unknown */
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -220,7 +220,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.device_id	= 51,
 		.isapnp_id	= 0x0000,	/* XXX unknown */
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,	/* unknown */
 		.gainlkup	= ai_gain_14,
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index 05f51bc..4c451b5 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -5513,13 +5513,13 @@ static int ni_E_init(struct comedi_device *dev,
 		    SDF_READABLE | SDF_DIFF | SDF_DITHER | SDF_CMD_READ;
 		if (!devpriv->is_611x)
 			s->subdev_flags |= SDF_GROUND | SDF_COMMON | SDF_OTHER;
-		if (board->adbits > 16)
+		if (board->ai_maxdata > 0xffff)
 			s->subdev_flags |= SDF_LSAMPL;
 		if (devpriv->is_m_series)
 			s->subdev_flags |= SDF_SOFT_CALIBRATED;
 		s->n_chan = board->n_adchan;
 		s->len_chanlist = 512;
-		s->maxdata = (1 << board->adbits) - 1;
+		s->maxdata = board->ai_maxdata;
 		s->range_table = ni_range_lkup[board->gainlkup];
 		s->insn_read = &ni_ai_insn_read;
 		s->insn_config = &ni_ai_insn_config;
diff --git a/drivers/staging/comedi/drivers/ni_mio_cs.c b/drivers/staging/comedi/drivers/ni_mio_cs.c
index 815cb2b..bba709d 100644
--- a/drivers/staging/comedi/drivers/ni_mio_cs.c
+++ b/drivers/staging/comedi/drivers/ni_mio_cs.c
@@ -56,7 +56,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.name		= "DAQCard-ai-16xe-50",
 		.device_id	= 0x010d,
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 1024,
 		.gainlkup	= ai_gain_8,
 		.ai_speed	= 5000,
@@ -66,7 +66,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.name		= "DAQCard-ai-16e-4",
 		.device_id	= 0x010c,
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 1024,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 4000,
@@ -76,7 +76,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.name		= "DAQCard-6062E",
 		.device_id	= 0x02c4,
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 8192,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 2000,
@@ -92,7 +92,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.name		= "DAQCard-6024E",
 		.device_id	= 0x075e,
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 1024,
 		.gainlkup	= ai_gain_4,
 		.ai_speed	= 5000,
@@ -107,7 +107,7 @@ static const struct ni_board_struct ni_boards[] = {
 		.name		= "DAQCard-6036E",
 		.device_id	= 0x0245,
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 1024,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_4,
diff --git a/drivers/staging/comedi/drivers/ni_pcimio.c b/drivers/staging/comedi/drivers/ni_pcimio.c
index 1095f3f..394fd2b 100644
--- a/drivers/staging/comedi/drivers/ni_pcimio.c
+++ b/drivers/staging/comedi/drivers/ni_pcimio.c
@@ -211,7 +211,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCIMIO_16XE_50] = {
 		.name		= "pci-mio-16xe-50",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 2048,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_8,
@@ -226,7 +226,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCIMIO_16XE_10] = {
 		.name		= "pci-mio-16xe-10",	/*  aka pci-6030E */
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -242,7 +242,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6014] = {
 		.name		= "pci-6014",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_4,
@@ -257,7 +257,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6030E] = {
 		.name		= "pxi-6030e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -273,7 +273,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCIMIO_16E_1] = {
 		.name		= "pci-mio-16e-1",	/* aka pci-6070e */
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 800,
@@ -288,7 +288,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCIMIO_16E_4] = {
 		.name		= "pci-mio-16e-4",	/* aka pci-6040e */
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_16,
 		/*
@@ -307,7 +307,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6040E] = {
 		.name		= "pxi-6040e",
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_16,
 		.ai_speed	= 2000,
@@ -322,7 +322,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6031E] = {
 		.name		= "pci-6031e",
 		.n_adchan	= 64,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -338,7 +338,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6032E] = {
 		.name		= "pci-6032e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -349,7 +349,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6033E] = {
 		.name		= "pci-6033e",
 		.n_adchan	= 64,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -360,7 +360,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6071E] = {
 		.name		= "pci-6071e",
 		.n_adchan	= 64,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_16,
@@ -376,7 +376,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6023E] = {
 		.name		= "pci-6023e",
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_4,
 		.ai_speed	= 5000,
@@ -386,7 +386,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6024E] = {
 		.name		= "pci-6024e",
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_4,
 		.ai_speed	= 5000,
@@ -400,7 +400,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6025E] = {
 		.name		= "pci-6025e",
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_4,
 		.ai_speed	= 5000,
@@ -415,7 +415,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6025E] = {
 		.name		= "pxi-6025e",
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.gainlkup	= ai_gain_4,
 		.ai_speed	= 5000,
@@ -430,7 +430,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6034E] = {
 		.name		= "pci-6034e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_4,
@@ -441,7 +441,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6035E] = {
 		.name		= "pci-6035e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_4,
@@ -456,7 +456,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6052E] = {
 		.name		= "pci-6052e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_16,
@@ -473,7 +473,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6110] = {
 		.name		= "pci-6110",
 		.n_adchan	= 4,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 8192,
 		.alwaysdither	= 0,
 		.gainlkup	= ai_gain_611x,
@@ -490,7 +490,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6111] = {
 		.name		= "pci-6111",
 		.n_adchan	= 2,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 8192,
 		.gainlkup	= ai_gain_611x,
 		.ai_speed	= 200,
@@ -508,7 +508,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6115] = {	/* .device_id = 0x2ed0, */
 		.name		= "pci-6115",
 		.n_adchan	= 4,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 8192,
 		.gainlkup	= ai_gain_611x,
 		.ai_speed	= 100,
@@ -527,7 +527,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6115] = {	/* .device_id = ????, */
 		.name		= "pxi-6115",
 		.n_adchan	= 4,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 8192,
 		.gainlkup	= ai_gain_611x,
 		.ai_speed	= 100,
@@ -635,7 +635,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6071E] = {
 		.name		= "pxi-6071e",
 		.n_adchan	= 64,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_16,
@@ -651,7 +651,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6070E] = {
 		.name		= "pxi-6070e",
 		.n_adchan	= 16,
-		.adbits		= 12,
+		.ai_maxdata	= 0x0fff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_16,
@@ -667,7 +667,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6052E] = {
 		.name		= "pxi-6052e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_16,
@@ -683,7 +683,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6031E] = {
 		.name		= "pxi-6031e",
 		.n_adchan	= 64,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_14,
@@ -699,7 +699,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6036E] = {
 		.name = "pci-6036e",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,
 		.alwaysdither	= 1,
 		.gainlkup	= ai_gain_4,
@@ -714,7 +714,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6220] = {
 		.name		= "pci-6220",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 512,		/* FIXME: guess */
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -725,7 +725,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6221] = {
 		.name		= "pci-6221",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -741,7 +741,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6221_37PIN] = {
 		.name		= "pci-6221_37pin",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -757,7 +757,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6224] = {
 		.name		= "pci-6224",
 		.n_adchan	= 32,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -768,7 +768,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6224] = {
 		.name		= "pxi-6224",
 		.n_adchan	= 32,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -779,7 +779,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6225] = {
 		.name		= "pci-6225",
 		.n_adchan	= 80,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -795,7 +795,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6225] = {
 		.name		= "pxi-6225",
 		.n_adchan	= 80,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -811,7 +811,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6229] = {
 		.name		= "pci-6229",
 		.n_adchan	= 32,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_622x,
 		.ai_speed	= 4000,
@@ -827,7 +827,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6250] = {
 		.name		= "pci-6250",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -838,7 +838,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6251] = {
 		.name		= "pci-6251",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -854,7 +854,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCIE6251] = {
 		.name		= "pcie-6251",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -870,7 +870,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXIE6251] = {
 		.name		= "pxie-6251",
 		.n_adchan	= 16,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -886,7 +886,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6254] = {
 		.name		= "pci-6254",
 		.n_adchan	= 32,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -897,7 +897,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6259] = {
 		.name		= "pci-6259",
 		.n_adchan	= 32,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -913,7 +913,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCIE6259] = {
 		.name		= "pcie-6259",
 		.n_adchan	= 32,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 4095,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 800,
@@ -929,7 +929,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6280] = {
 		.name		= "pci-6280",
 		.n_adchan	= 16,
-		.adbits		= 18,
+		.ai_maxdata	= 0x3ffff,
 		.ai_fifo_depth	= 2047,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 1600,
@@ -941,7 +941,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6281] = {
 		.name		= "pci-6281",
 		.n_adchan	= 16,
-		.adbits		= 18,
+		.ai_maxdata	= 0x3ffff,
 		.ai_fifo_depth	= 2047,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 1600,
@@ -957,7 +957,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6281] = {
 		.name		= "pxi-6281",
 		.n_adchan	= 16,
-		.adbits		= 18,
+		.ai_maxdata	= 0x3ffff,
 		.ai_fifo_depth	= 2047,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 1600,
@@ -973,7 +973,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6284] = {
 		.name		= "pci-6284",
 		.n_adchan	= 32,
-		.adbits		= 18,
+		.ai_maxdata	= 0x3ffff,
 		.ai_fifo_depth	= 2047,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 1600,
@@ -984,7 +984,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6289] = {
 		.name		= "pci-6289",
 		.n_adchan	= 32,
-		.adbits		= 18,
+		.ai_maxdata	= 0x3ffff,
 		.ai_fifo_depth	= 2047,
 		.gainlkup	= ai_gain_628x,
 		.ai_speed	= 1600,
@@ -1000,7 +1000,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PCI6143] = {
 		.name		= "pci-6143",
 		.n_adchan	= 8,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 1024,
 		.gainlkup	= ai_gain_6143,
 		.ai_speed	= 4000,
@@ -1011,7 +1011,7 @@ static const struct ni_board_struct ni_boards[] = {
 	[BOARD_PXI6143] = {
 		.name		= "pxi-6143",
 		.n_adchan	= 8,
-		.adbits		= 16,
+		.ai_maxdata	= 0xffff,
 		.ai_fifo_depth	= 1024,
 		.gainlkup	= ai_gain_6143,
 		.ai_speed	= 4000,
diff --git a/drivers/staging/comedi/drivers/ni_stc.h b/drivers/staging/comedi/drivers/ni_stc.h
index 6f9c481..ceae7e1 100644
--- a/drivers/staging/comedi/drivers/ni_stc.h
+++ b/drivers/staging/comedi/drivers/ni_stc.h
@@ -1393,7 +1393,7 @@ struct ni_board_struct {
 	int isapnp_id;
 
 	int n_adchan;
-	int adbits;
+	unsigned int ai_maxdata;
 
 	int ai_fifo_depth;
 	unsigned int alwaysdither:1;