[PATCH] isp16 check_region() removal

Convert check_region to request_region and clean up some parentheses in
return statements for drivers/cdrom/isp16.c.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/cdrom/isp16.c

@@ -16,6 +16,10 @@
  *			   module_init & module_exit.
  *			   Torben Mathiasen <tmm@image.dk>
  *
+ *     19 June 2004     -- check_region() converted to request_region()
+ *                         and return statement cleanups.
+ *                         Jesper Juhl <juhl-lkml@dif.dk>
+ *
  *    Detect cdrom interface on ISP16 sound card.
  *    Configure cdrom interface.
  *
@@ -118,17 +122,17 @@ int __init isp16_init(void)
 
 	if (!strcmp(isp16_cdrom_type, "noisp16")) {
 		printk("ISP16: no cdrom interface configured.\n");
-		return (0);
+		return 0;
 	}
 
-	if (check_region(ISP16_IO_BASE, ISP16_IO_SIZE)) {
+	if (!request_region(ISP16_IO_BASE, ISP16_IO_SIZE, "isp16")) {
 		printk("ISP16: i/o ports already in use.\n");
-		return (-EIO);
+		goto out;
 	}
 
 	if ((isp16_type = isp16_detect()) < 0) {
 		printk("ISP16: no cdrom interface found.\n");
-		return (-EIO);
+		goto cleanup_out;
 	}
 
 	printk(KERN_INFO
@@ -148,27 +152,32 @@ int __init isp16_init(void)
 	else {
 		printk("ISP16: %s not supported by cdrom interface.\n",
 		       isp16_cdrom_type);
-		return (-EIO);
+		goto cleanup_out;
 	}
 
 	if (isp16_cdi_config(isp16_cdrom_base, expected_drive,
 			     isp16_cdrom_irq, isp16_cdrom_dma) < 0) {
 		printk
 		    ("ISP16: cdrom interface has not been properly configured.\n");
-		return (-EIO);
+		goto cleanup_out;
 	}
 	printk(KERN_INFO
 	       "ISP16: cdrom interface set up with io base 0x%03X, irq %d, dma %d,"
 	       " type %s.\n", isp16_cdrom_base, isp16_cdrom_irq,
 	       isp16_cdrom_dma, isp16_cdrom_type);
-	return (0);
+	return 0;
+
+cleanup_out:
+	release_region(ISP16_IO_BASE, ISP16_IO_SIZE);
+out:
+	return -EIO;
 }
 
 static short __init isp16_detect(void)
 {
 
 	if (isp16_c929__detect() >= 0)
-		return (2);
+		return 2;
 	else
 		return (isp16_c928__detect());
 }
@@ -206,7 +215,7 @@ static short __init isp16_c928__detect(void)
 			ISP16_OUT(ISP16_C928__ENABLE_PORT, enable_cdrom);
 		} else {	/* bits are not the same */
 			ISP16_OUT(ISP16_CTRL_PORT, ctrl);
-			return (i);	/* -> not detected: possibly incorrect conclusion */
+			return i;	/* -> not detected: possibly incorrect conclusion */
 		}
 	} else if (enable_cdrom == 0x20)
 		i = 0;
@@ -215,7 +224,7 @@ static short __init isp16_c928__detect(void)
 
 	ISP16_OUT(ISP16_CTRL_PORT, ctrl);
 
-	return (i);
+	return i;
 }
 
 static short __init isp16_c929__detect(void)
@@ -236,12 +245,12 @@ static short __init isp16_c929__detect(void)
 	tmp = ISP16_IN(ISP16_CTRL_PORT);
 
 	if (tmp != 2)		/* isp16 with 82C929 not detected */
-		return (-1);
+		return -1;
 
 	/* restore ctrl port value */
 	ISP16_OUT(ISP16_CTRL_PORT, ctrl);
 
-	return (2);
+	return 2;
 }
 
 static short __init
@@ -272,7 +281,7 @@ isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
 		printk
 		    ("ISP16: base address 0x%03X not supported by cdrom interface.\n",
 		     base);
-		return (-1);
+		return -1;
 	}
 	switch (irq) {
 	case 0:
@@ -303,7 +312,7 @@ isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
 	default:
 		printk("ISP16: irq %d not supported by cdrom interface.\n",
 		       irq);
-		return (-1);
+		return -1;
 	}
 	switch (dma) {
 	case 0:
@@ -312,7 +321,7 @@ isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
 	case 1:
 		printk("ISP16: dma 1 cannot be used by cdrom interface,"
 		       " due to conflict with the sound card.\n");
-		return (-1);
+		return -1;
 		break;
 	case 3:
 		dma_code = ISP16_DMA_3;
@@ -329,7 +338,7 @@ isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
 	default:
 		printk("ISP16: dma %d not supported by cdrom interface.\n",
 		       dma);
-		return (-1);
+		return -1;
 	}
 
 	if (drive_type != ISP16_SONY && drive_type != ISP16_PANASONIC0 &&
@@ -339,7 +348,7 @@ isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
 		printk
 		    ("ISP16: drive type (code 0x%02X) not supported by cdrom"
 		     " interface.\n", drive_type);
-		return (-1);
+		return -1;
 	}
 
 	/* set type of interface */
@@ -354,7 +363,7 @@ isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
 	i = ISP16_IN(ISP16_IO_SET_PORT) & ISP16_IO_SET_MASK;	/* keep some bits */
 	ISP16_OUT(ISP16_IO_SET_PORT, i | base_code | irq_code | dma_code);
 
-	return (0);
+	return 0;
 }
 
 void __exit isp16_exit(void)