[ARM] ecard: add ecardm_iomap() / ecardm_iounmap()

Add devres ecardm_iomap() and ecardm_iounmap() for Acorn expansion
cards.  Convert all expansion card drivers to use them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

13 files changed, 53 insertions, 118 deletions

diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 65f1398723a4..f56d48c451ea 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -41,11 +41,11 @@
 #include <linux/init.h>
 #include <linux/mutex.h>
 #include <linux/kthread.h>
+#include <linux/io.h>
 
 #include <asm/dma.h>
 #include <asm/ecard.h>
 #include <asm/hardware.h>
-#include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/mmu_context.h>
 #include <asm/mach/irq.h>
@@ -966,6 +966,23 @@ void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *op
 }
 EXPORT_SYMBOL(ecard_setirq);
 
+void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
+			   unsigned long offset, unsigned long maxsize)
+{
+	unsigned long start = ecard_resource_start(ec, res);
+	unsigned long end = ecard_resource_end(ec, res);
+
+	if (offset > (end - start))
+		return NULL;
+
+	start += offset;
+	if (maxsize && end - start > maxsize)
+		end = start + maxsize;
+	
+	return devm_ioremap(&ec->dev, start, end - start);
+}
+EXPORT_SYMBOL(ecardm_iomap);
+
 /*
  * Probe for an expansion card.
  *
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c
index d7621a39ed09..d323e75b05d5 100644
--- a/drivers/ata/pata_icside.c
+++ b/drivers/ata/pata_icside.c
@@ -425,8 +425,7 @@ pata_icside_register_v5(struct ata_probe_ent *ae, struct expansion_card *ec)
 	struct pata_icside_state *state = ae->private_data;
 	void __iomem *base;
 
-	base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
-		       ecard_resource_len(ec, ECARD_RES_MEMC));
+	base = ecardm_iomap(info->ec, ECARD_RES_MEMC, 0, 0);
 	if (!base)
 		return -ENOMEM;
 
@@ -453,24 +452,17 @@ pata_icside_register_v6(struct ata_probe_ent *ae, struct expansion_card *ec)
 	struct pata_icside_state *state = ae->private_data;
 	void __iomem *ioc_base, *easi_base;
 	unsigned int sel = 0;
-	int ret;
 
-	ioc_base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
-			   ecard_resource_len(ec, ECARD_RES_IOCFAST));
-	if (!ioc_base) {
-		ret = -ENOMEM;
-		goto out;
-	}
+	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
+	if (!ioc_base)
+		return -ENOMEM;
 
 	easi_base = ioc_base;
 
 	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
-		easi_base = ioremap(ecard_resource_start(ec, ECARD_RES_EASI),
-				    ecard_resource_len(ec, ECARD_RES_EASI));
-		if (!easi_base) {
-			ret = -ENOMEM;
-			goto unmap_slot;
-		}
+		easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
+		if (!easi_base)
+			return -ENOMEM;
 
 		/*
 		 * Enable access to the EASI region.
@@ -507,10 +499,6 @@ pata_icside_register_v6(struct ata_probe_ent *ae, struct expansion_card *ec)
 
 	return icside_dma_init(ae, ec);
 
- unmap_slot:
-	iounmap(ioc_base);
- out:
-	return ret;
 }
 
 static int __devinit
@@ -534,8 +522,7 @@ pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
 	state->type = ICS_TYPE_NOTYPE;
 	state->dma = NO_DMA;
 
-	idmem = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
-			ecard_resource_len(ec, ECARD_RES_IOCFAST));
+	idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (idmem) {
 		unsigned int type;
 
@@ -543,7 +530,7 @@ pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
 		type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
 		type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
 		type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
-		iounmap(idmem);
+		ecardm_iounmap(ec, idmem);
 
 		state->type = type;
 	}
@@ -638,10 +625,6 @@ static void __devexit pata_icside_remove(struct expansion_card *ec)
 	 */
 	if (state->dma != NO_DMA)
 		free_dma(state->dma);
-	if (state->ioc_base)
-		iounmap(state->ioc_base);
-	if (state->ioc_base != state->irq_port)
-		iounmap(state->irq_port);
 
 	kfree(state);
 	ecard_release_resources(ec);
diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 69c949ea93e3..66f826252aee 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -565,8 +565,7 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
 	ide_hwif_t *hwif;
 	void __iomem *base;
 
-	base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
-		       ecard_resource_len(ec, ECARD_RES_MEMC));
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	if (!base)
 		return -ENOMEM;
 
@@ -583,10 +582,8 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
 	icside_irqdisable_arcin_v5(ec, 0);
 
 	hwif = icside_setup(base, &icside_cardinfo_v5, ec);
-	if (!hwif) {
-		iounmap(base);
+	if (!hwif)
 		return -ENODEV;
-	}
 
 	state->hwif[0] = hwif;
 
@@ -605,8 +602,7 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
 	unsigned int sel = 0;
 	int ret;
 
-	ioc_base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
-			   ecard_resource_len(ec, ECARD_RES_IOCFAST));
+	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (!ioc_base) {
 		ret = -ENOMEM;
 		goto out;
@@ -615,11 +611,10 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
 	easi_base = ioc_base;
 
 	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
-		easi_base = ioremap(ecard_resource_start(ec, ECARD_RES_EASI),
-				    ecard_resource_len(ec, ECARD_RES_EASI));
+		easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
 		if (!easi_base) {
 			ret = -ENOMEM;
-			goto unmap_slot;
+			goto out;
 		}
 
 		/*
@@ -648,7 +643,7 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
 
 	if (!hwif || !mate) {
 		ret = -ENODEV;
-		goto unmap_port;
+		goto out;
 	}
 
 	state->hwif[0]    = hwif;
@@ -685,11 +680,6 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
 
 	return 0;
 
- unmap_port:
-	if (easi_base != ioc_base)
-		iounmap(easi_base);
- unmap_slot:
-	iounmap(ioc_base);
  out:
 	return ret;
 }
@@ -715,8 +705,7 @@ icside_probe(struct expansion_card *ec, const struct ecard_id *id)
 	state->type	= ICS_TYPE_NOTYPE;
 	state->dev	= &ec->dev;
 
-	idmem = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
-			ecard_resource_len(ec, ECARD_RES_IOCFAST));
+	idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (idmem) {
 		unsigned int type;
 
@@ -724,7 +713,7 @@ icside_probe(struct expansion_card *ec, const struct ecard_id *id)
 		type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
 		type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
 		type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
-		iounmap(idmem);
+		ecardm_iounmap(ec, idmem);
 
 		state->type = type;
 	}
@@ -793,11 +782,6 @@ static void __devexit icside_remove(struct expansion_card *ec)
 
 	ecard_set_drvdata(ec, NULL);
 
-	if (state->ioc_base)
-		iounmap(state->ioc_base);
-	if (state->ioc_base != state->irq_port)
-		iounmap(state->irq_port);
-
 	kfree(state);
 	ecard_release_resources(ec);
 }
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index 890ea3fac3c6..83811af11610 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -63,8 +63,7 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
 	if (ret)
 		goto out;
 
-	base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
-		       ecard_resource_len(ec, ECARD_RES_MEMC));
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto release;
@@ -81,7 +80,6 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
 		goto out;
 	}
 
-	iounmap(base);
  release:
 	ecard_release_resources(ec);
  out:
@@ -96,7 +94,6 @@ static void __devexit rapide_remove(struct expansion_card *ec)
 
 	/* there must be a better way */
 	ide_unregister(hwif - ide_hwifs);
-	iounmap(hwif->hwif_data);
 	ecard_release_resources(ec);
 }
 
diff --git a/drivers/net/arm/ether1.c b/drivers/net/arm/ether1.c
index f075cebe84ad..f21148e7b579 100644
--- a/drivers/net/arm/ether1.c
+++ b/drivers/net/arm/ether1.c
@@ -1014,8 +1014,7 @@ ether1_probe(struct expansion_card *ec, const struct ecard_id *id)
 	SET_NETDEV_DEV(dev, &ec->dev);
 
 	dev->irq = ec->irq;
-	priv(dev)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
-				  ecard_resource_len(ec, ECARD_RES_IOCFAST));
+	priv(dev)->base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (!priv(dev)->base) {
 		ret = -ENOMEM;
 		goto free;
@@ -1056,8 +1055,6 @@ ether1_probe(struct expansion_card *ec, const struct ecard_id *id)
 	return 0;
 
  free:
-	if (priv(dev)->base)
-		iounmap(priv(dev)->base);
 	free_netdev(dev);
  release:
 	ecard_release_resources(ec);
@@ -1072,7 +1069,6 @@ static void __devexit ether1_remove(struct expansion_card *ec)
 	ecard_set_drvdata(ec, NULL);	
 
 	unregister_netdev(dev);
-	iounmap(priv(dev)->base);
 	free_netdev(dev);
 	ecard_release_resources(ec);
 }
diff --git a/drivers/net/arm/ether3.c b/drivers/net/arm/ether3.c
index 32da2eb9bcee..da713500654d 100644
--- a/drivers/net/arm/ether3.c
+++ b/drivers/net/arm/ether3.c
@@ -793,8 +793,7 @@ ether3_probe(struct expansion_card *ec, const struct ecard_id *id)
 	SET_MODULE_OWNER(dev);
 	SET_NETDEV_DEV(dev, &ec->dev);
 
-	priv(dev)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
-				  ecard_resource_len(ec, ECARD_RES_MEMC));
+	priv(dev)->base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	if (!priv(dev)->base) {
 		ret = -ENOMEM;
 		goto free;
@@ -869,8 +868,6 @@ ether3_probe(struct expansion_card *ec, const struct ecard_id *id)
 	return 0;
 
  free:
-	if (priv(dev)->base)
-		iounmap(priv(dev)->base);
 	free_netdev(dev);
  release:
 	ecard_release_resources(ec);
@@ -885,7 +882,6 @@ static void __devexit ether3_remove(struct expansion_card *ec)
 	ecard_set_drvdata(ec, NULL);
 
 	unregister_netdev(dev);
-	iounmap(priv(dev)->base);
 	free_netdev(dev);
 	ecard_release_resources(ec);
 }
diff --git a/drivers/net/arm/etherh.c b/drivers/net/arm/etherh.c
index 387f1e3a4e84..769ba69451f4 100644
--- a/drivers/net/arm/etherh.c
+++ b/drivers/net/arm/etherh.c
@@ -686,7 +686,7 @@ etherh_probe(struct expansion_card *ec, const struct ecard_id *id)
 	eh->supported		= data->supported;
 	eh->ctrl		= 0;
 	eh->id			= ec->cid.product;
-	eh->memc		= ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), PAGE_SIZE);
+	eh->memc		= ecardm_iomap(ec, ECARD_RES_MEMC, 0, PAGE_SIZE);
 	if (!eh->memc) {
 		ret = -ENOMEM;
 		goto free;
@@ -694,7 +694,7 @@ etherh_probe(struct expansion_card *ec, const struct ecard_id *id)
 
 	eh->ctrl_port = eh->memc;
 	if (data->ctrl_ioc) {
-		eh->ioc_fast = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST), PAGE_SIZE);
+		eh->ioc_fast = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, PAGE_SIZE);
 		if (!eh->ioc_fast) {
 			ret = -ENOMEM;
 			goto free;
@@ -758,10 +758,6 @@ etherh_probe(struct expansion_card *ec, const struct ecard_id *id)
 	return 0;
 
  free:
-	if (eh->ioc_fast)
-		iounmap(eh->ioc_fast);
-	if (eh->memc)
-		iounmap(eh->memc);
 	free_netdev(dev);
  release:
 	ecard_release_resources(ec);
@@ -772,16 +768,11 @@ etherh_probe(struct expansion_card *ec, const struct ecard_id *id)
 static void __devexit etherh_remove(struct expansion_card *ec)
 {
 	struct net_device *dev = ecard_get_drvdata(ec);
-	struct etherh_priv *eh = etherh_priv(dev);
 
 	ecard_set_drvdata(ec, NULL);
 
 	unregister_netdev(dev);
 
-	if (eh->ioc_fast)
-		iounmap(eh->ioc_fast);
-	iounmap(eh->memc);
-
 	free_netdev(dev);
 
 	ecard_release_resources(ec);
diff --git a/drivers/scsi/arm/arxescsi.c b/drivers/scsi/arm/arxescsi.c
index 7e132c5bacf8..2836fe248df9 100644
--- a/drivers/scsi/arm/arxescsi.c
+++ b/drivers/scsi/arm/arxescsi.c
@@ -281,7 +281,6 @@ arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 {
 	struct Scsi_Host *host;
 	struct arxescsi_info *info;
-	unsigned long resbase, reslen;
 	void __iomem *base;
 	int ret;
 
@@ -289,9 +288,7 @@ arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	if (ret)
 		goto out;
 
-	resbase = ecard_resource_start(ec, ECARD_RES_MEMC);
-	reslen = ecard_resource_len(ec, ECARD_RES_MEMC);
-	base = ioremap(resbase, reslen);
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto out_region;
@@ -300,7 +297,7 @@ arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	host = scsi_host_alloc(&arxescsi_template, sizeof(struct arxescsi_info));
 	if (!host) {
 		ret = -ENOMEM;
-		goto out_unmap;
+		goto out_region;
 	}
 
 	info = (struct arxescsi_info *)host->hostdata;
@@ -337,8 +334,6 @@ arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	fas216_release(host);
  out_unregister:
 	scsi_host_put(host);
- out_unmap:
-	iounmap(base);
  out_region:
 	ecard_release_resources(ec);
  out:
@@ -348,13 +343,10 @@ arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 static void __devexit arxescsi_remove(struct expansion_card *ec)
 {
 	struct Scsi_Host *host = ecard_get_drvdata(ec);
-	struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata;
 
 	ecard_set_drvdata(ec, NULL);
 	fas216_remove(host);
 
-	iounmap(info->base);
-
 	fas216_release(host);
 	scsi_host_put(host);
 	ecard_release_resources(ec);
diff --git a/drivers/scsi/arm/cumana_2.c b/drivers/scsi/arm/cumana_2.c
index f51aa3446bc7..68a64123af8f 100644
--- a/drivers/scsi/arm/cumana_2.c
+++ b/drivers/scsi/arm/cumana_2.c
@@ -401,7 +401,6 @@ cumanascsi2_probe(struct expansion_card *ec, const struct ecard_id *id)
 {
 	struct Scsi_Host *host;
 	struct cumanascsi2_info *info;
-	unsigned long resbase, reslen;
 	void __iomem *base;
 	int ret;
 
@@ -409,9 +408,7 @@ cumanascsi2_probe(struct expansion_card *ec, const struct ecard_id *id)
 	if (ret)
 		goto out;
 
-	resbase = ecard_resource_start(ec, ECARD_RES_MEMC);
-	reslen = ecard_resource_len(ec, ECARD_RES_MEMC);
-	base = ioremap(resbase, reslen);
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto out_region;
@@ -421,7 +418,7 @@ cumanascsi2_probe(struct expansion_card *ec, const struct ecard_id *id)
 			       sizeof(struct cumanascsi2_info));
 	if (!host) {
 		ret = -ENOMEM;
-		goto out_unmap;
+		goto out_region;
 	}
 
 	ecard_set_drvdata(ec, host);
@@ -490,9 +487,6 @@ cumanascsi2_probe(struct expansion_card *ec, const struct ecard_id *id)
  out_free:
 	scsi_host_put(host);
 
- out_unmap:
-	iounmap(base);
-
  out_region:
 	ecard_release_resources(ec);
 
@@ -512,8 +506,6 @@ static void __devexit cumanascsi2_remove(struct expansion_card *ec)
 		free_dma(info->info.scsi.dma);
 	free_irq(ec->irq, info);
 
-	iounmap(info->base);
-
 	fas216_release(host);
 	scsi_host_put(host);
 	ecard_release_resources(ec);
diff --git a/drivers/scsi/arm/eesox.c b/drivers/scsi/arm/eesox.c
index cc5d513aa99a..bb2477b3fb0b 100644
--- a/drivers/scsi/arm/eesox.c
+++ b/drivers/scsi/arm/eesox.c
@@ -519,7 +519,6 @@ eesoxscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 {
 	struct Scsi_Host *host;
 	struct eesoxscsi_info *info;
-	unsigned long resbase, reslen;
 	void __iomem *base;
 	int ret;
 
@@ -527,9 +526,7 @@ eesoxscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	if (ret)
 		goto out;
 
-	resbase = ecard_resource_start(ec, ECARD_RES_IOCFAST);
-	reslen = ecard_resource_len(ec, ECARD_RES_IOCFAST);
-	base = ioremap(resbase, reslen);
+	base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto out_region;
@@ -539,7 +536,7 @@ eesoxscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 			       sizeof(struct eesoxscsi_info));
 	if (!host) {
 		ret = -ENOMEM;
-		goto out_unmap;
+		goto out_region;
 	}
 
 	ecard_set_drvdata(ec, host);
@@ -612,9 +609,6 @@ eesoxscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	device_remove_file(&ec->dev, &dev_attr_bus_term);
 	scsi_host_put(host);
 
- out_unmap:
-	iounmap(base);
-
  out_region:
 	ecard_release_resources(ec);
 
@@ -636,8 +630,6 @@ static void __devexit eesoxscsi_remove(struct expansion_card *ec)
 
 	device_remove_file(&ec->dev, &dev_attr_bus_term);
 
-	iounmap(info->base);
-
 	fas216_release(host);
 	scsi_host_put(host);
 	ecard_release_resources(ec);
diff --git a/drivers/scsi/arm/powertec.c b/drivers/scsi/arm/powertec.c
index 3cbd525b58c5..d9a546d1917c 100644
--- a/drivers/scsi/arm/powertec.c
+++ b/drivers/scsi/arm/powertec.c
@@ -313,7 +313,6 @@ powertecscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 {
 	struct Scsi_Host *host;
 	struct powertec_info *info;
-	unsigned long resbase, reslen;
 	void __iomem *base;
 	int ret;
 
@@ -321,9 +320,7 @@ powertecscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	if (ret)
 		goto out;
 
-	resbase = ecard_resource_start(ec, ECARD_RES_IOCFAST);
-	reslen = ecard_resource_len(ec, ECARD_RES_IOCFAST);
-	base = ioremap(resbase, reslen);
+	base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto out_region;
@@ -333,7 +330,7 @@ powertecscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 			       sizeof (struct powertec_info));
 	if (!host) {
 		ret = -ENOMEM;
-		goto out_unmap;
+		goto out_region;
 	}
 
 	ecard_set_drvdata(ec, host);
@@ -404,9 +401,6 @@ powertecscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 	device_remove_file(&ec->dev, &dev_attr_bus_term);
 	scsi_host_put(host);
 
- out_unmap:
-	iounmap(base);
-
  out_region:
 	ecard_release_resources(ec);
 
@@ -428,8 +422,6 @@ static void __devexit powertecscsi_remove(struct expansion_card *ec)
 		free_dma(info->info.scsi.dma);
 	free_irq(ec->irq, info);
 
-	iounmap(info->base);
-
 	fas216_release(host);
 	scsi_host_put(host);
 	ecard_release_resources(ec);
diff --git a/drivers/serial/8250_acorn.c b/drivers/serial/8250_acorn.c
index 562ba745a044..b0ce8c56f1a4 100644
--- a/drivers/serial/8250_acorn.c
+++ b/drivers/serial/8250_acorn.c
@@ -54,7 +54,7 @@ serial_card_probe(struct expansion_card *ec, const struct ecard_id *id)
 	info->num_ports = type->num_ports;
 
 	bus_addr = ecard_resource_start(ec, type->type);
-	info->vaddr = ioremap(bus_addr, ecard_resource_len(ec, type->type));
+	info->vaddr = ecardm_iomap(ec, type->type, 0, 0);
 	if (!info->vaddr) {
 		kfree(info);
 		return -ENOMEM;
@@ -91,7 +91,6 @@ static void __devexit serial_card_remove(struct expansion_card *ec)
 		if (info->ports[i] > 0)
 			serial8250_unregister_port(info->ports[i]);
 
-	iounmap(info->vaddr);
 	kfree(info);
 }
 
diff --git a/include/asm-arm/ecard.h b/include/asm-arm/ecard.h
index 8f1000eac91f..684fe0645239 100644
--- a/include/asm-arm/ecard.h
+++ b/include/asm-arm/ecard.h
@@ -226,6 +226,10 @@ ecard_address(struct expansion_card *ec, card_type_t type, card_speed_t speed)
 extern int ecard_request_resources(struct expansion_card *ec);
 extern void ecard_release_resources(struct expansion_card *ec);
 
+void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
+			   unsigned long offset, unsigned long maxsize);
+#define ecardm_iounmap(__ec, __addr)	devm_iounmap(&(__ec)->dev, __addr)
+
 extern struct bus_type ecard_bus_type;
 
 #define ECARD_DEV(_d)	container_of((_d), struct expansion_card, dev)