diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index f8db6e342cbb2cb4a33ca0ff9fbb2324544fdd18..3bcb7dc32995ce01391998d1f1e6d2a4e8162eea 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -310,9 +310,10 @@ static int __init at91_cf_probe(struct platform_device *pdev)
 	return 0;
 
 fail2:
-	iounmap((void __iomem *) cf->socket.io_offset);
 	release_mem_region(io->start, io->end + 1 - io->start);
 fail1:
+	if (cf->socket.io_offset)
+		iounmap((void __iomem *) cf->socket.io_offset);
 	if (board->irq_pin)
 		free_irq(board->irq_pin, cf);
 fail0a:
diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c
index 5387de6216fbecd2e2a01daee84f913c430fdd56..551bde5d943041c55f364f49cb4151aba30076ed 100644
--- a/drivers/pcmcia/au1000_generic.c
+++ b/drivers/pcmcia/au1000_generic.c
@@ -449,6 +449,16 @@ int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops,
 		del_timer_sync(&skt->poll_timer);
 		pcmcia_unregister_socket(&skt->socket);
 		flush_scheduled_work();
+		if (i == 0) {
+			iounmap(skt->virt_io + (u32)mips_io_port_base);
+			skt->virt_io = NULL;
+		}
+#ifndef CONFIG_MIPS_XXS1500
+		else {
+			iounmap(skt->virt_io + (u32)mips_io_port_base);
+			skt->virt_io = NULL;
+		}
+#endif
 		ops->hw_shutdown(skt);
 
 	}
diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c
index e070a2896769ff2d2f27b640239b3a27fbd015fa..3b72be880401398d93b6465c82333aa84af5e585 100644
--- a/drivers/pcmcia/m8xx_pcmcia.c
+++ b/drivers/pcmcia/m8xx_pcmcia.c
@@ -427,7 +427,7 @@ static int voltage_set(int slot, int vcc, int vpp)
 			reg |= BCSR1_PCCVCC1;
 			break;
 		default:
-			return 1;
+			goto out_unmap;
 	}
 
 	switch(vpp) {
@@ -438,15 +438,15 @@ static int voltage_set(int slot, int vcc, int vpp)
 			if(vcc == vpp)
 				reg |= BCSR1_PCCVPP1;
 			else
-				return 1;
+				goto out_unmap;
 			break;
 		case 120:
 			if ((vcc == 33) || (vcc == 50))
 				reg |= BCSR1_PCCVPP0;
 			else
-				return 1;
+				goto out_unmap;
 		default:
-			return 1;
+			goto out_unmap;
 	}
 
 	/* first, turn off all power */
@@ -457,6 +457,10 @@ static int voltage_set(int slot, int vcc, int vpp)
 
 	iounmap(bcsr_io);
 	return 0;
+
+out_unmap:
+	iounmap(bcsr_io);
+	return 1;
 }
 
 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
diff --git a/drivers/pcmcia/omap_cf.c b/drivers/pcmcia/omap_cf.c
index c8e838c69766b5417b3e9722f0338fa1b9b924f9..06bf7f48836ea9edcf0c1e503041a90f393e3ece 100644
--- a/drivers/pcmcia/omap_cf.c
+++ b/drivers/pcmcia/omap_cf.c
@@ -309,9 +309,10 @@ static int __devinit omap_cf_probe(struct device *dev)
 	return 0;
 
 fail2:
-	iounmap((void __iomem *) cf->socket.io_offset);
 	release_mem_region(cf->phys_cf, SZ_8K);
 fail1:
+	if (cf->socket.io_offset)
+		iounmap((void __iomem *) cf->socket.io_offset);
 	free_irq(irq, cf);
 fail0:
 	kfree(cf);