i2c-parport: Various cleanups

* Fix white space.
* Rename labels to something meaningful.
* Prefix defines with PORT_ to avoid collision with macros from
  <linux/parport.h>.
* Add const markers where possible.
Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/i2c/busses/i2c-parport-light.c

@@ -132,7 +132,7 @@ static struct i2c_smbus_alert_setup alert_data = {
 static struct i2c_client *ara;
 static struct lineop parport_ctrl_irq = {
 	.val		= (1 << 4),
-	.port		= CTRL,
+	.port		= PORT_CTRL,
 };
 
 static int __devinit i2c_parport_probe(struct platform_device *pdev)

drivers/i2c/busses/i2c-parport.c

@@ -78,13 +78,13 @@ static unsigned char port_read_control(struct parport *p)
 	return parport_read_control(p);
 }
 
-static void (*port_write[])(struct parport *, unsigned char) = {
+static void (* const port_write[])(struct parport *, unsigned char) = {
 	port_write_data,
 	NULL,
 	port_write_control,
 };
 
-static unsigned char (*port_read[])(struct parport *) = {
+static unsigned char (* const port_read[])(struct parport *) = {
 	port_read_data,
 	port_read_status,
 	port_read_control,
@@ -164,7 +164,7 @@ void i2c_parport_irq(void *data)
 			"SMBus alert received but no ARA client!\n");
 }
 
-static void i2c_parport_attach (struct parport *port)
+static void i2c_parport_attach(struct parport *port)
 {
 	struct i2c_par *adapter;
 
@@ -180,7 +180,7 @@ static void i2c_parport_attach (struct parport *port)
 		NULL, NULL, i2c_parport_irq, PARPORT_FLAG_EXCL, adapter);
 	if (!adapter->pdev) {
 		printk(KERN_ERR "i2c-parport: Unable to register with parport\n");
-		goto ERROR0;
+		goto err_free;
 	}
 
 	/* Fill the rest of the structure */
@@ -200,7 +200,7 @@ static void i2c_parport_attach (struct parport *port)
 
 	if (parport_claim_or_block(adapter->pdev) < 0) {
 		printk(KERN_ERR "i2c-parport: Could not claim parallel port\n");
-		goto ERROR1;
+		goto err_unregister;
 	}
 
 	/* Reset hardware to a sane state (SCL and SDA high) */
@@ -215,7 +215,7 @@ static void i2c_parport_attach (struct parport *port)
 
 	if (i2c_bit_add_bus(&adapter->adapter) < 0) {
 		printk(KERN_ERR "i2c-parport: Unable to register with I2C\n");
-		goto ERROR1;
+		goto err_unregister;
 	}
 
 	/* Setup SMBus alert if supported */
@@ -236,14 +236,14 @@ static void i2c_parport_attach (struct parport *port)
 	mutex_unlock(&adapter_list_lock);
 	return;
 
-ERROR1:
+ err_unregister:
 	parport_release(adapter->pdev);
 	parport_unregister_device(adapter->pdev);
-ERROR0:
+ err_free:
 	kfree(adapter);
 }
 
-static void i2c_parport_detach (struct parport *port)
+static void i2c_parport_detach(struct parport *port)
 {
 	struct i2c_par *adapter, *_n;
 

drivers/i2c/busses/i2c-parport.h

@@ -18,13 +18,9 @@
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  * ------------------------------------------------------------------------ */
 
-#ifdef DATA
-#undef DATA
-#endif
-
-#define DATA	0
-#define STAT	1
-#define CTRL	2
+#define PORT_DATA	0
+#define PORT_STAT	1
+#define PORT_CTRL	2
 
 struct lineop {
 	u8 val;
@@ -41,61 +37,61 @@ struct adapter_parm {
 	unsigned int smbus_alert:1;
 };
 
-static struct adapter_parm adapter_parm[] = {
+static const struct adapter_parm adapter_parm[] = {
 	/* type 0: Philips adapter */
 	{
-		.setsda	= { 0x80, DATA, 1 },
-		.setscl	= { 0x08, CTRL, 0 },
-		.getsda	= { 0x80, STAT, 0 },
-		.getscl	= { 0x08, STAT, 0 },
+		.setsda	= { 0x80, PORT_DATA, 1 },
+		.setscl	= { 0x08, PORT_CTRL, 0 },
+		.getsda	= { 0x80, PORT_STAT, 0 },
+		.getscl	= { 0x08, PORT_STAT, 0 },
 	},
 	/* type 1: home brew teletext adapter */
 	{
-		.setsda	= { 0x02, DATA, 0 },
-		.setscl	= { 0x01, DATA, 0 },
-		.getsda	= { 0x80, STAT, 1 },
+		.setsda	= { 0x02, PORT_DATA, 0 },
+		.setscl	= { 0x01, PORT_DATA, 0 },
+		.getsda	= { 0x80, PORT_STAT, 1 },
 	},
 	/* type 2: Velleman K8000 adapter */
 	{
-		.setsda	= { 0x02, CTRL, 1 },
-		.setscl	= { 0x08, CTRL, 1 },
-		.getsda	= { 0x10, STAT, 0 },
+		.setsda	= { 0x02, PORT_CTRL, 1 },
+		.setscl	= { 0x08, PORT_CTRL, 1 },
+		.getsda	= { 0x10, PORT_STAT, 0 },
 	},
 	/* type 3: ELV adapter */
 	{
-		.setsda	= { 0x02, DATA, 1 },
-		.setscl	= { 0x01, DATA, 1 },
-		.getsda	= { 0x40, STAT, 1 },
-		.getscl	= { 0x08, STAT, 1 },
+		.setsda	= { 0x02, PORT_DATA, 1 },
+		.setscl	= { 0x01, PORT_DATA, 1 },
+		.getsda	= { 0x40, PORT_STAT, 1 },
+		.getscl	= { 0x08, PORT_STAT, 1 },
 	},
 	/* type 4: ADM1032 evaluation board */
 	{
-		.setsda	= { 0x02, DATA, 1 },
-		.setscl	= { 0x01, DATA, 1 },
-		.getsda	= { 0x10, STAT, 1 },
-		.init	= { 0xf0, DATA, 0 },
+		.setsda	= { 0x02, PORT_DATA, 1 },
+		.setscl	= { 0x01, PORT_DATA, 1 },
+		.getsda	= { 0x10, PORT_STAT, 1 },
+		.init	= { 0xf0, PORT_DATA, 0 },
 		.smbus_alert = 1,
 	},
 	/* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
 	{
-		.setsda	= { 0x02, DATA, 1 },
-		.setscl	= { 0x01, DATA, 1 },
-		.getsda	= { 0x10, STAT, 1 },
+		.setsda	= { 0x02, PORT_DATA, 1 },
+		.setscl	= { 0x01, PORT_DATA, 1 },
+		.getsda	= { 0x10, PORT_STAT, 1 },
 	},
 	/* type 6: Barco LPT->DVI (K5800236) adapter */
 	{
-		.setsda	= { 0x02, DATA, 1 },
-		.setscl	= { 0x01, DATA, 1 },
-		.getsda	= { 0x20, STAT, 0 },
-		.getscl	= { 0x40, STAT, 0 },
-		.init	= { 0xfc, DATA, 0 },
+		.setsda	= { 0x02, PORT_DATA, 1 },
+		.setscl	= { 0x01, PORT_DATA, 1 },
+		.getsda	= { 0x20, PORT_STAT, 0 },
+		.getscl	= { 0x40, PORT_STAT, 0 },
+		.init	= { 0xfc, PORT_DATA, 0 },
 	},
 	/* type 7: One For All JP1 parallel port adapter */
 	{
-		.setsda	= { 0x01, DATA, 0 },
-		.setscl	= { 0x02, DATA, 0 },
-		.getsda	= { 0x80, STAT, 1 },
-		.init	= { 0x04, DATA, 1 },
+		.setsda	= { 0x01, PORT_DATA, 0 },
+		.setscl	= { 0x02, PORT_DATA, 0 },
+		.getsda	= { 0x80, PORT_STAT, 1 },
+		.init	= { 0x04, PORT_DATA, 1 },
 	},
 };