[PATCH] drivers/isdn: ioremap balanced with iounmap

ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.
Signed-off-by: Amol Lad <amol@verismonetworks.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/isdn/hisax/diva.c

@@ -716,8 +716,10 @@ release_io_diva(struct IsdnCardState *cs)
 
 		*cfg = 0; /* disable INT0/1 */ 
 		*cfg = 2; /* reset pending INT0 */
-		iounmap((void *)cs->hw.diva.cfg_reg);
-		iounmap((void *)cs->hw.diva.pci_cfg);
+		if (cs->hw.diva.cfg_reg)
+			iounmap((void *)cs->hw.diva.cfg_reg);
+		if (cs->hw.diva.pci_cfg)
+			iounmap((void *)cs->hw.diva.pci_cfg);
 		return;
 	} else if (cs->subtyp != DIVA_IPAC_ISA) {
 		del_timer(&cs->hw.diva.tl);
@@ -733,6 +735,23 @@ release_io_diva(struct IsdnCardState *cs)
 	}
 }
 
+static void
+iounmap_diva(struct IsdnCardState *cs)
+{
+	if ((cs->subtyp == DIVA_IPAC_PCI) || (cs->subtyp == DIVA_IPACX_PCI)) {
+		if (cs->hw.diva.cfg_reg) {
+			iounmap((void *)cs->hw.diva.cfg_reg);
+			cs->hw.diva.cfg_reg = 0;
+		}
+		if (cs->hw.diva.pci_cfg) {
+			iounmap((void *)cs->hw.diva.pci_cfg);
+			cs->hw.diva.pci_cfg = 0;
+		}
+	}
+
+	return;
+}
+
 static void
 reset_diva(struct IsdnCardState *cs)
 {
@@ -1069,11 +1088,13 @@ setup_diva(struct IsdnCard *card)
 
 		if (!cs->irq) {
 			printk(KERN_WARNING "Diva: No IRQ for PCI card found\n");
+			iounmap_diva(cs);
 			return(0);
 		}
 
 		if (!cs->hw.diva.cfg_reg) {
 			printk(KERN_WARNING "Diva: No IO-Adr for PCI card found\n");
+			iounmap_diva(cs);
 			return(0);
 		}
 		cs->irq_flags |= IRQF_SHARED;
@@ -1123,6 +1144,7 @@ ready:
 			       CardType[card->typ],
 			       cs->hw.diva.cfg_reg,
 			       cs->hw.diva.cfg_reg + bytecnt);
+			iounmap_diva(cs);
 			return (0);
 		}
 	}

drivers/isdn/hysdn/boardergo.c

@@ -403,7 +403,7 @@ ergo_releasehardware(hysdn_card * card)
 	free_irq(card->irq, card);	/* release interrupt */
 	release_region(card->iobase + PCI9050_INTR_REG, 1);	/* release all io ports */
 	release_region(card->iobase + PCI9050_USER_IO, 1);
-	vfree(card->dpram);
+	iounmap(card->dpram);
 	card->dpram = NULL;	/* release shared mem */
 }				/* ergo_releasehardware */