staging: comedi: das1800: tidy up das1800_probe()

The (*attach) of driver calls this function to probe the 'id' of the
hardware to verify that a valid boardinfo has been selected by the
user.

The dev_dbg() messages when the boardinfo is valid is just added
noise. The printk messages when the id does not match the boardinfo
does have some value.

Refactor the function to remove the noise and use a common message
for the "(probed, not recommended)" message.

Convert the printk() messages to dev_err().
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>

drivers/staging/comedi/drivers/das1800.c

@@ -1329,77 +1329,60 @@ static int das1800_init_dma(struct comedi_device *dev, unsigned int dma0,
 
 static int das1800_probe(struct comedi_device *dev)
 {
+	const struct das1800_board *board = comedi_board(dev);
+	int index;
 	int id;
-	int board;
 
-	id = (inb(dev->iobase + DAS1800_DIGITAL) >> 4) & 0xf;	/* get id bits */
-	board = ((struct das1800_board *)dev->board_ptr) - das1800_boards;
+	/* calc the offset to the boardinfo that was found by the core */
+	index = board - das1800_boards;
 
+	/* verify that the board id matches the boardinfo */
+	id = (inb(dev->iobase + DAS1800_DIGITAL) >> 4) & 0xf;
 	switch (id) {
 	case 0x3:
-		if (board == das1801st_da || board == das1802st_da ||
-		    board == das1701st_da || board == das1702st_da) {
-			dev_dbg(dev->class_dev, "Board model: %s\n",
-				das1800_boards[board].name);
-			return board;
-		}
-		printk
-		    (" Board model (probed, not recommended): das-1800st-da series\n");
-		return das1801st;
+		if (index == das1801st_da || index == das1802st_da ||
+		    index == das1701st_da || index == das1702st_da)
+			return index;
+		index = das1801st;
+		break;
 	case 0x4:
-		if (board == das1802hr_da || board == das1702hr_da) {
-			dev_dbg(dev->class_dev, "Board model: %s\n",
-				das1800_boards[board].name);
-			return board;
-		}
-		printk
-		    (" Board model (probed, not recommended): das-1802hr-da\n");
-		return das1802hr;
+		if (index == das1802hr_da || index == das1702hr_da)
+			return index;
+		index = das1802hr;
+		break;
 	case 0x5:
-		if (board == das1801ao || board == das1802ao ||
-		    board == das1701ao || board == das1702ao) {
-			dev_dbg(dev->class_dev, "Board model: %s\n",
-				das1800_boards[board].name);
-			return board;
-		}
-		printk
-		    (" Board model (probed, not recommended): das-1800ao series\n");
-		return das1801ao;
+		if (index == das1801ao || index == das1802ao ||
+		    index == das1701ao || index == das1702ao)
+			return index;
+		index = das1801ao;
+		break;
 	case 0x6:
-		if (board == das1802hr || board == das1702hr) {
-			dev_dbg(dev->class_dev, "Board model: %s\n",
-				das1800_boards[board].name);
-			return board;
-		}
-		printk
-		    (" Board model (probed, not recommended): das-1802hr\n");
-		return das1802hr;
+		if (index == das1802hr || index == das1702hr)
+			return index;
+		index = das1802hr;
+		break;
 	case 0x7:
-		if (board == das1801st || board == das1802st ||
-		    board == das1701st || board == das1702st) {
-			dev_dbg(dev->class_dev, "Board model: %s\n",
-				das1800_boards[board].name);
-			return board;
-		}
-		printk
-		    (" Board model (probed, not recommended): das-1800st series\n");
-		return das1801st;
+		if (index == das1801st || index == das1802st ||
+		    index == das1701st || index == das1702st)
+			return index;
+		index = das1801st;
+		break;
 	case 0x8:
-		if (board == das1801hc || board == das1802hc) {
-			dev_dbg(dev->class_dev, "Board model: %s\n",
-				das1800_boards[board].name);
-			return board;
-		}
-		printk
-		    (" Board model (probed, not recommended): das-1800hc series\n");
-		return das1801hc;
+		if (index == das1801hc || index == das1802hc)
+			return index;
+		index = das1801hc;
+		break;
 	default:
-		printk
-		    (" Board model: probe returned 0x%x (unknown, please report)\n",
+		dev_err(dev->class_dev,
+			"Board model: probe returned 0x%x (unknown, please report)\n",
 			id);
-		return board;
+		break;
 	}
-	return -1;
+	dev_err(dev->class_dev,
+		"Board model (probed, not recommended): %s series\n",
+		das1800_boards[index].name);
+
+	return index;
 }
 
 static int das1800_attach(struct comedi_device *dev,