Staging: comedi: addi-data: Cleanup redundant tests on unsigned

The variables are unsigned so the test `>= 0' is always true,
In these cases the other part of the test catch wrapped values.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/addi-data/APCI1710_Chrono.c

@@ -1386,8 +1386,7 @@ int i_APCI1710_ReadChronoValue(struct comedi_device *dev,
 				/* Test the timout parameter */
 		 /*****************************/
 
-				if ((ui_TimeOut >= 0)
-					&& (ui_TimeOut <= 65535UL)) {
+				if (ui_TimeOut <= 65535UL) {
 
 					for (;;) {
 			  /*******************/

drivers/staging/comedi/drivers/addi-data/hwdrv_apci1032.c

@@ -150,7 +150,7 @@ int i_APCI1032_Read1DigitalInput(struct comedi_device *dev, struct comedi_subdev
 	unsigned int ui_TmpValue = 0;
 	unsigned int ui_Channel;
 	ui_Channel = CR_CHAN(insn->chanspec);
-	if (ui_Channel >= 0 && ui_Channel <= 31) {
+	if (ui_Channel <= 31) {
 		ui_TmpValue = (unsigned int) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
 /*
 * since only 1 channel reqd to bring it to last bit it is rotated 8

drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c

@@ -968,7 +968,7 @@ int i_APCI1500_ReadMoreDigitalInput(struct comedi_device *dev, struct comedi_sub
 
 	switch (data[0]) {
 	case 0:
-		if (ui_Channel >= 0 && ui_Channel <= 15) {
+		if (ui_Channel <= 15) {
 			ui_TmpValue =
 				(unsigned int) inw(devpriv->i_IobaseAddon +
 				APCI1500_DIGITAL_IP);

drivers/staging/comedi/drivers/addi-data/hwdrv_apci1516.c

@@ -79,7 +79,7 @@ int i_APCI1516_Read1DigitalInput(struct comedi_device *dev, struct comedi_subdev
 	unsigned int ui_TmpValue = 0;
 	unsigned int ui_Channel;
 	ui_Channel = CR_CHAN(insn->chanspec);
-	if (ui_Channel >= 0 && ui_Channel <= 7) {
+	if (ui_Channel <= 7) {
 		ui_TmpValue = (unsigned int) inw(devpriv->iobase + APCI1516_DIGITAL_IP);
 		/*   since only 1 channel reqd  to bring it to last bit it is rotated */
 		/*   8 +(chan - 1) times then ANDed with 1 for last bit. */

drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c

@@ -154,7 +154,7 @@ int i_APCI1564_Read1DigitalInput(struct comedi_device *dev, struct comedi_subdev
 	unsigned int ui_Channel;
 
 	ui_Channel = CR_CHAN(insn->chanspec);
-	if (ui_Channel >= 0 && ui_Channel <= 31) {
+	if (ui_Channel <= 31) {
 		ui_TmpValue =
 			(unsigned int) inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_IP);
 /*

drivers/staging/comedi/drivers/addi-data/hwdrv_apci2016.c

@@ -117,7 +117,7 @@ int i_APCI2016_WriteDigitalOutput(struct comedi_device *dev, struct comedi_subde
 	unsigned int ui_NoOfChannel;
 	unsigned int ui_Temp, ui_Temp1;
 	ui_NoOfChannel = CR_CHAN(insn->chanspec);
-	if ((ui_NoOfChannel < 0) || (ui_NoOfChannel > 15)) {
+	if (ui_NoOfChannel > 15) {
 		comedi_error(dev,
 			"Invalid Channel Numbers !!!, Channel Numbers must be between 0 and 15\n");
 		return -EINVAL;
@@ -272,7 +272,7 @@ int i_APCI2016_BitsDigitalOutput(struct comedi_device *dev, struct comedi_subdev
 	unsigned int ui_Temp;
 	unsigned int ui_NoOfChannel;
 	ui_NoOfChannel = CR_CHAN(insn->chanspec);
-	if ((ui_NoOfChannel < 0) || (ui_NoOfChannel > 15)) {
+	if (ui_NoOfChannel > 15) {
 		comedi_error(dev,
 			"Invalid Channel Numbers !!!, Channel Numbers must be between 0 and 15\n");
 		return -EINVAL;

drivers/staging/comedi/drivers/addi-data/hwdrv_apci2200.c

@@ -79,7 +79,7 @@ int i_APCI2200_Read1DigitalInput(struct comedi_device *dev, struct comedi_subdev
 	unsigned int ui_TmpValue = 0;
 	unsigned int ui_Channel;
 	ui_Channel = CR_CHAN(insn->chanspec);
-	if (ui_Channel >= 0 && ui_Channel <= 7) {
+	if (ui_Channel <= 7) {
 		ui_TmpValue = (unsigned int) inw(devpriv->iobase + APCI2200_DIGITAL_IP);
 		*data = (ui_TmpValue >> ui_Channel) & 0x1;
 	}			/* if(ui_Channel >= 0 && ui_Channel <=7) */

drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c

@@ -2350,7 +2350,7 @@ int i_APCI3120_InsnReadDigitalInput(struct comedi_device *dev,
 	ui_Chan = CR_CHAN(insn->chanspec);	/*  channel specified */
 
 	/* this_board->i_hwdrv_InsnReadDigitalInput(dev,ui_Chan,data); */
-	if (ui_Chan >= 0 && ui_Chan <= 3) {
+	if (ui_Chan <= 3) {
 		ui_TmpValue = (unsigned int) inw(devpriv->iobase + APCI3120_RD_STATUS);
 
 /*
@@ -2539,8 +2539,7 @@ int i_APCI3120_InsnWriteDigitalOutput(struct comedi_device *dev,
 			"Not a valid Data !!! ,Data should be 1 or 0\n");
 		return -EINVAL;
 	}
-	if ((ui_NoOfChannel > (this_board->i_NbrDoChannel - 1))
-		|| (ui_NoOfChannel < 0)) {
+	if (ui_NoOfChannel > this_board->i_NbrDoChannel - 1) {
 		comedi_error(dev,
 			"This board doesn't have specified channel !!! \n");
 		return -EINVAL;

drivers/staging/comedi/drivers/addi-data/hwdrv_apci3200.c

@@ -461,7 +461,7 @@ int i_APCI3200_GetChannelCalibrationValue(struct comedi_device *dev,
 	if (s_BoardInfos[dev->minor].i_ConnectionType == 1) {
 		/* if diff */
 
-		if ((ui_Channel_num >= 0) && (ui_Channel_num <= 1))
+		if (ui_Channel_num <= 1)
 			i_DiffChannel = ui_Channel_num, i_Module = 0;
 		else if ((ui_Channel_num >= 2) && (ui_Channel_num <= 3))
 			i_DiffChannel = ui_Channel_num - 2, i_Module = 1;

drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c

@@ -148,7 +148,7 @@ int i_APCI3XXX_AnalogInputConfigOperatingMode(struct comedi_device *dev,
 			/* Test the convert time value */
 	      /*******************************/
 
-			if ((dw_ReloadValue >= 0) && (dw_ReloadValue <= 65535)) {
+			if (dw_ReloadValue <= 65535) {
 				dw_TestReloadValue = dw_ReloadValue;
 
 				if (b_TimeBase == 1) {