treewide: Convert uses of struct resource to resource_size(ptr)

Several fixes as well where the +1 was missing.

Done via coccinelle scripts like:

@@
struct resource *ptr;
@@

- ptr->end - ptr->start + 1
+ resource_size(ptr)

and some grep and typing.

Mostly uncompiled, no cross-compilers.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

34 files changed, 56 insertions, 58 deletions

diff --git a/arch/powerpc/include/asm/macio.h b/arch/powerpc/include/asm/macio.h
index 7ab82c825a03..27af7f8bbb8d 100644
--- a/arch/powerpc/include/asm/macio.h
+++ b/arch/powerpc/include/asm/macio.h
@@ -76,7 +76,7 @@ static inline unsigned long macio_resource_len(struct macio_dev *dev, int resour
 	struct resource *res = &dev->resource[resource_no];
 	if (res->start == 0 || res->end == 0 || res->end < res->start)
 		return 0;
-	return res->end - res->start + 1;
+	return resource_size(res);
 }
 
 extern int macio_enable_devres(struct macio_dev *dev);
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index 7ee50f0547cb..6658a1589955 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -126,7 +126,7 @@ void __init reserve_crashkernel(void)
 	/* We might have got these values via the command line or the
 	 * device tree, either way sanitise them now. */
 
-	crash_size = crashk_res.end - crashk_res.start + 1;
+	crash_size = resource_size(&crashk_res);
 
 #ifndef CONFIG_RELOCATABLE
 	if (crashk_res.start != KDUMP_KERNELBASE)
@@ -222,7 +222,7 @@ static void __init export_crashk_values(struct device_node *node)
 
 	if (crashk_res.start != 0) {
 		prom_add_property(node, &crashk_base_prop);
-		crashk_size = crashk_res.end - crashk_res.start + 1;
+		crashk_size = resource_size(&crashk_res);
 		prom_add_property(node, &crashk_size_prop);
 	}
 }
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 893af2a9cd03..3764e37205fb 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -107,7 +107,7 @@ static resource_size_t pcibios_io_size(const struct pci_controller *hose)
 #ifdef CONFIG_PPC64
 	return hose->pci_io_size;
 #else
-	return hose->io_resource.end - hose->io_resource.start + 1;
+	return resource_size(&hose->io_resource);
 #endif
 }
 
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pci.c b/arch/powerpc/platforms/52xx/mpc52xx_pci.c
index da110bd88346..5f5e69309080 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pci.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pci.c
@@ -264,7 +264,7 @@ mpc52xx_pci_setup(struct pci_controller *hose,
 			 (unsigned long long)res->flags);
 		out_be32(&pci_regs->iw0btar,
 		         MPC52xx_PCI_IWBTAR_TRANSLATION(res->start, res->start,
-		                  res->end - res->start + 1));
+							resource_size(res)));
 		iwcr0 = MPC52xx_PCI_IWCR_ENABLE | MPC52xx_PCI_IWCR_MEM;
 		if (res->flags & IORESOURCE_PREFETCH)
 			iwcr0 |= MPC52xx_PCI_IWCR_READ_MULTI;
@@ -278,7 +278,7 @@ mpc52xx_pci_setup(struct pci_controller *hose,
 		         res->start, res->end, res->flags);
 		out_be32(&pci_regs->iw1btar,
 		         MPC52xx_PCI_IWBTAR_TRANSLATION(res->start, res->start,
-		                  res->end - res->start + 1));
+							resource_size(res)));
 		iwcr1 = MPC52xx_PCI_IWCR_ENABLE | MPC52xx_PCI_IWCR_MEM;
 		if (res->flags & IORESOURCE_PREFETCH)
 			iwcr1 |= MPC52xx_PCI_IWCR_READ_MULTI;
@@ -300,7 +300,7 @@ mpc52xx_pci_setup(struct pci_controller *hose,
 	out_be32(&pci_regs->iw2btar,
 	         MPC52xx_PCI_IWBTAR_TRANSLATION(hose->io_base_phys,
 	                                        res->start,
-	                                        res->end - res->start + 1));
+						resource_size(res)));
 	iwcr2 = MPC52xx_PCI_IWCR_ENABLE | MPC52xx_PCI_IWCR_IO;
 
 	/* Set all the IWCR fields at once; they're in the same reg */
@@ -402,7 +402,7 @@ mpc52xx_add_bridge(struct device_node *node)
 
 	hose->ops = &mpc52xx_pci_ops;
 
-	pci_regs = ioremap(rsrc.start, rsrc.end - rsrc.start + 1);
+	pci_regs = ioremap(rsrc.start, resource_size(&rsrc));
 	if (!pci_regs)
 		return -ENOMEM;
 
diff --git a/arch/powerpc/platforms/83xx/km83xx.c b/arch/powerpc/platforms/83xx/km83xx.c
index a2b9b9ef1240..f8fa2fc3129f 100644
--- a/arch/powerpc/platforms/83xx/km83xx.c
+++ b/arch/powerpc/platforms/83xx/km83xx.c
@@ -101,7 +101,7 @@ static void __init mpc83xx_km_setup_arch(void)
 					__func__);
 				return;
 			}
-			base = ioremap(res.start, res.end - res.start + 1);
+			base = ioremap(res.start, resource_size(&res));
 
 			/*
 			 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
diff --git a/arch/powerpc/platforms/83xx/mpc832x_mds.c b/arch/powerpc/platforms/83xx/mpc832x_mds.c
index ec0b401bc9cf..93e60f1f21a9 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_mds.c
@@ -68,7 +68,7 @@ static void __init mpc832x_sys_setup_arch(void)
 		struct resource res;
 
 		of_address_to_resource(np, 0, &res);
-		bcsr_regs = ioremap(res.start, res.end - res.start +1);
+		bcsr_regs = ioremap(res.start, resource_size(&res));
 		of_node_put(np);
 	}
 
diff --git a/arch/powerpc/platforms/83xx/mpc834x_mds.c b/arch/powerpc/platforms/83xx/mpc834x_mds.c
index d0a634b056ca..c1b1dc50b32a 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_mds.c
@@ -53,7 +53,7 @@ static int mpc834xemds_usb_cfg(void)
 		struct resource res;
 
 		of_address_to_resource(np, 0, &res);
-		bcsr_regs = ioremap(res.start, res.end - res.start + 1);
+		bcsr_regs = ioremap(res.start, resource_size(&res));
 		of_node_put(np);
 	}
 	if (!bcsr_regs)
diff --git a/arch/powerpc/platforms/83xx/mpc836x_mds.c b/arch/powerpc/platforms/83xx/mpc836x_mds.c
index 09e9d6fb7411..81c052b1353e 100644
--- a/arch/powerpc/platforms/83xx/mpc836x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc836x_mds.c
@@ -76,7 +76,7 @@ static void __init mpc836x_mds_setup_arch(void)
 		struct resource res;
 
 		of_address_to_resource(np, 0, &res);
-		bcsr_regs = ioremap(res.start, res.end - res.start +1);
+		bcsr_regs = ioremap(res.start, resource_size(&res));
 		of_node_put(np);
 	}
 
diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c
index 2c64164722d0..1ad748bb39b4 100644
--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -171,7 +171,7 @@ int mpc831x_usb_cfg(void)
 		of_node_put(np);
 		return ret;
 	}
-	usb_regs = ioremap(res.start, res.end - res.start + 1);
+	usb_regs = ioremap(res.start, resource_size(&res));
 
 	/* Using on-chip PHY */
 	if (prop && (!strcmp(prop, "utmi_wide") ||
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
index d2dfd465fbf6..09ced7221750 100644
--- a/arch/powerpc/platforms/85xx/sbc8560.c
+++ b/arch/powerpc/platforms/85xx/sbc8560.c
@@ -285,7 +285,7 @@ static int __init sbc8560_bdrstcr_init(void)
 
 	printk(KERN_INFO "sbc8560: Found BRSTCR at i/o 0x%x\n", res.start);
 
-	brstcr = ioremap(res.start, res.end - res.start);
+	brstcr = ioremap(res.start, resource_size(&res));
 	if(!brstcr)
 		printk(KERN_WARNING "sbc8560: ioremap of brstcr failed.\n");
 
diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
index 0125604d096e..a9dc5e795123 100644
--- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c
+++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
@@ -123,7 +123,7 @@ static void xes_mpc85xx_fixups(void)
 			continue;
 		}
 
-		l2_base = ioremap(r[0].start, r[0].end - r[0].start + 1);
+		l2_base = ioremap(r[0].start, resource_size(&r[0]));
 
 		xes_mpc85xx_configure_l2(l2_base);
 	}
diff --git a/arch/powerpc/platforms/cell/celleb_scc_epci.c b/arch/powerpc/platforms/cell/celleb_scc_epci.c
index 05b0db3ef638..844c0facb4f7 100644
--- a/arch/powerpc/platforms/cell/celleb_scc_epci.c
+++ b/arch/powerpc/platforms/cell/celleb_scc_epci.c
@@ -393,19 +393,19 @@ static int __init celleb_setup_epci(struct device_node *node,
 
 	if (of_address_to_resource(node, 0, &r))
 		goto error;
-	hose->cfg_addr = ioremap(r.start, (r.end - r.start + 1));
+	hose->cfg_addr = ioremap(r.start, resource_size(&r));
 	if (!hose->cfg_addr)
 		goto error;
 	pr_debug("EPCI: cfg_addr map 0x%016llx->0x%016lx + 0x%016llx\n",
-		 r.start, (unsigned long)hose->cfg_addr, (r.end - r.start + 1));
+		 r.start, (unsigned long)hose->cfg_addr, resource_size(&r));
 
 	if (of_address_to_resource(node, 2, &r))
 		goto error;
-	hose->cfg_data = ioremap(r.start, (r.end - r.start + 1));
+	hose->cfg_data = ioremap(r.start, resource_size(&r));
 	if (!hose->cfg_data)
 		goto error;
 	pr_debug("EPCI: cfg_data map 0x%016llx->0x%016lx + 0x%016llx\n",
-		 r.start, (unsigned long)hose->cfg_data, (r.end - r.start + 1));
+		 r.start, (unsigned long)hose->cfg_data, resource_size(&r));
 
 	hose->ops = &celleb_epci_ops;
 	celleb_epci_init(hose);
diff --git a/arch/powerpc/platforms/cell/celleb_scc_pciex.c b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
index a881bbee8de0..ae790ac4a589 100644
--- a/arch/powerpc/platforms/cell/celleb_scc_pciex.c
+++ b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
@@ -494,7 +494,7 @@ static __init int celleb_setup_pciex(struct device_node *node,
 		pr_err("PCIEXC:Failed to get config resource.\n");
 		return 1;
 	}
-	phb->cfg_addr = ioremap(r.start, r.end - r.start + 1);
+	phb->cfg_addr = ioremap(r.start, resource_size(&r));
 	if (!phb->cfg_addr) {
 		pr_err("PCIEXC:Failed to remap SMMIO region.\n");
 		return 1;
diff --git a/arch/powerpc/platforms/cell/spu_manage.c b/arch/powerpc/platforms/cell/spu_manage.c
index f465d474ad9b..4e5c91489c02 100644
--- a/arch/powerpc/platforms/cell/spu_manage.c
+++ b/arch/powerpc/platforms/cell/spu_manage.c
@@ -222,7 +222,7 @@ static int spu_map_resource(struct spu *spu, int nr,
 		return ret;
 	if (phys)
 		*phys = resource.start;
-	len = resource.end - resource.start + 1;
+	len = resource_size(&resource);
 	*virt = ioremap(resource.start, len);
 	if (!*virt)
 		return -EINVAL;
diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index 8f67a394b2d0..3f65443f1714 100644
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -142,7 +142,7 @@ hydra_init(void)
 		return 0;
 	}
 	of_node_put(np);
-	Hydra = ioremap(r.start, r.end-r.start);
+	Hydra = ioremap(r.start, resource_size(&r));
 	printk("Hydra Mac I/O at %llx\n", (unsigned long long)r.start);
 	printk("Hydra Feature_Control was %x",
 	       in_le32(&Hydra->Feature_Control));
diff --git a/arch/powerpc/platforms/pasemi/dma_lib.c b/arch/powerpc/platforms/pasemi/dma_lib.c
index 321a9b3a2d00..756123bf06ac 100644
--- a/arch/powerpc/platforms/pasemi/dma_lib.c
+++ b/arch/powerpc/platforms/pasemi/dma_lib.c
@@ -576,7 +576,7 @@ int pasemi_dma_init(void)
 		res.start = 0xfd800000;
 		res.end = res.start + 0x1000;
 	}
-	dma_status = __ioremap(res.start, res.end-res.start, 0);
+	dma_status = __ioremap(res.start, resource_size(&res), 0);
 	pci_dev_put(iob_pdev);
 
 	for (i = 0; i < MAX_TXCH; i++)
diff --git a/arch/powerpc/platforms/powermac/nvram.c b/arch/powerpc/platforms/powermac/nvram.c
index b1cdcf94aa8e..695443bfdb08 100644
--- a/arch/powerpc/platforms/powermac/nvram.c
+++ b/arch/powerpc/platforms/powermac/nvram.c
@@ -580,10 +580,10 @@ int __init pmac_nvram_init(void)
 	/* Try to obtain an address */
 	if (of_address_to_resource(dp, 0, &r1) == 0) {
 		nvram_naddrs = 1;
-		s1 = (r1.end - r1.start) + 1;
+		s1 = resource_size(&r1);
 		if (of_address_to_resource(dp, 1, &r2) == 0) {
 			nvram_naddrs = 2;
-			s2 = (r2.end - r2.start) + 1;
+			s2 = resource_size(&r2);
 		}
 	}
 
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index f33e08d573ce..4d4eba324837 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -838,8 +838,7 @@ static void __init setup_u3_ht(struct pci_controller* hose)
 	 * into cfg_addr
 	 */
 	hose->cfg_data = ioremap(cfg_res.start, 0x02000000);
-	hose->cfg_addr = ioremap(self_res.start,
-				 self_res.end - self_res.start + 1);
+	hose->cfg_addr = ioremap(self_res.start, resource_size(&self_res));
 
 	/*
 	 * /ht node doesn't expose a "ranges" property, we read the register
@@ -1323,8 +1322,7 @@ static void fixup_u4_pcie(struct pci_dev* dev)
 		 */
 		if (r->start >= 0xf0000000 && r->start < 0xf3000000)
 			continue;
-		if (!region || (r->end - r->start) >
-		    (region->end - region->start))
+		if (!region || resource_size(r) > resource_size(region))
 			region = r;
 	}
 	/* Nothing found, bail */
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index 48211ca134c3..11c9fce43b5b 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -274,7 +274,7 @@ int __init via_calibrate_decr(void)
 		return 0;
 	}
 	of_node_put(vias);
-	via = ioremap(rsrc.start, rsrc.end - rsrc.start + 1);
+	via = ioremap(rsrc.start, resource_size(&rsrc));
 	if (via == NULL) {
 		printk(KERN_ERR "Failed to map VIA for timer calibration !\n");
 		return 0;
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c
index bd0d54060b94..265f0f09395a 100644
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -203,7 +203,7 @@ static int axon_ram_probe(struct platform_device *device)
 		goto failed;
 	}
 
-	bank->size = resource.end - resource.start + 1;
+	bank->size = resource_size(&resource);
 
 	if (bank->size == 0) {
 		dev_err(&device->dev, "No DDR2 memory found for %s%d\n",
diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c
index 350787c83e22..5d7d59a43c4c 100644
--- a/arch/powerpc/sysdev/cpm1.c
+++ b/arch/powerpc/sysdev/cpm1.c
@@ -148,7 +148,7 @@ unsigned int cpm_pic_init(void)
 	if (ret)
 		goto end;
 
-	cpic_reg = ioremap(res.start, res.end - res.start + 1);
+	cpic_reg = ioremap(res.start, resource_size(&res));
 	if (cpic_reg == NULL)
 		goto end;
 
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index 2b69aa0315b3..d55d0ad0deab 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -115,7 +115,7 @@ int cpm_muram_init(void)
 			max = r.end;
 
 		rh_attach_region(&cpm_muram_info, r.start - muram_pbase,
-		                 r.end - r.start + 1);
+				 resource_size(&r));
 	}
 
 	muram_vbase = ioremap(muram_pbase, max - muram_pbase + 1);
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 8e9e06a7ca59..4f2680f431b5 100644
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -239,7 +239,7 @@ static int __init dart_init(struct device_node *dart_node)
 					 DARTMAP_RPNMASK);
 
 	/* Map in DART registers */
-	dart = ioremap(r.start, r.end - r.start + 1);
+	dart = ioremap(r.start, resource_size(&r));
 	if (dart == NULL)
 		panic("DART: Cannot map registers!");
 
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 92e78333c47c..419a77239bd7 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -349,7 +349,7 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev)
 		goto error_out;
 	}
 
-	msi->msi_regs = ioremap(res.start, res.end - res.start + 1);
+	msi->msi_regs = ioremap(res.start, resource_size(&res));
 	if (!msi->msi_regs) {
 		dev_err(&dev->dev, "ioremap problem failed\n");
 		goto error_out;
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 68ca9290df94..ba5cb3fa7074 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -64,7 +64,7 @@ static int __init setup_one_atmu(struct ccsr_pci __iomem *pci,
 {
 	resource_size_t pci_addr = res->start - offset;
 	resource_size_t phys_addr = res->start;
-	resource_size_t size = res->end - res->start + 1;
+	resource_size_t size = resource_size(res);
 	u32 flags = 0x80044000; /* enable & mem R/W */
 	unsigned int i;
 
@@ -108,7 +108,7 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
 	char *name = hose->dn->full_name;
 
 	pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
-		    (u64)rsrc->start, (u64)rsrc->end - (u64)rsrc->start + 1);
+		 (u64)rsrc->start, (u64)resource_size(rsrc));
 
 	if (of_device_is_compatible(hose->dn, "fsl,qoriq-pcie-v2.2")) {
 		win_idx = 2;
@@ -116,7 +116,7 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
 		end_idx = 3;
 	}
 
-	pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
+	pci = ioremap(rsrc->start, resource_size(rsrc));
 	if (!pci) {
 	    dev_err(hose->parent, "Unable to map ATMU registers\n");
 	    return;
@@ -153,9 +153,9 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
 		} else {
 			pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, "
 				 "phy base 0x%016llx.\n",
-				(u64)hose->io_resource.start,
-				(u64)hose->io_resource.end - (u64)hose->io_resource.start + 1,
-				(u64)hose->io_base_phys);
+				 (u64)hose->io_resource.start,
+				 (u64)resource_size(&hose->io_resource),
+				 (u64)hose->io_base_phys);
 			out_be32(&pci->pow[j].potar, (hose->io_resource.start >> 12));
 			out_be32(&pci->pow[j].potear, 0);
 			out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12));
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index 5b206a2fe17c..95853386a664 100644
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -1523,7 +1523,7 @@ int fsl_rio_setup(struct platform_device *dev)
 	port->priv = priv;
 	port->phys_efptr = 0x100;
 
-	priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1);
+	priv->regs_win = ioremap(regs.start, resource_size(&regs));
 	rio_regs_win = priv->regs_win;
 
 	/* Probe the master port phy type */
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 7367d17364cb..95da897f05a7 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -736,7 +736,7 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
 		return NULL;
 	}
 
-	ipic->regs = ioremap(res.start, res.end - res.start + 1);
+	ipic->regs = ioremap(res.start, resource_size(&res));
 
 	ipic->irqhost->host_data = ipic;
 
diff --git a/arch/powerpc/sysdev/mmio_nvram.c b/arch/powerpc/sysdev/mmio_nvram.c
index ddc877a3a23a..69f5814ae6d4 100644
--- a/arch/powerpc/sysdev/mmio_nvram.c
+++ b/arch/powerpc/sysdev/mmio_nvram.c
@@ -129,7 +129,7 @@ int __init mmio_nvram_init(void)
 		goto out;
 	}
 	nvram_addr = r.start;
-	mmio_nvram_len = r.end - r.start + 1;
+	mmio_nvram_len = resource_size(&r);
 	if ( (!mmio_nvram_len) || (!nvram_addr) ) {
 		printk(KERN_WARNING "nvram: address or length is 0\n");
 		ret = -EIO;
diff --git a/arch/powerpc/sysdev/mpc8xx_pic.c b/arch/powerpc/sysdev/mpc8xx_pic.c
index 20924f2246f0..22e48e2d71f1 100644
--- a/arch/powerpc/sysdev/mpc8xx_pic.c
+++ b/arch/powerpc/sysdev/mpc8xx_pic.c
@@ -166,7 +166,7 @@ int mpc8xx_pic_init(void)
 	if (ret)
 		goto out;
 
-	siu_reg = ioremap(res.start, res.end - res.start + 1);
+	siu_reg = ioremap(res.start, resource_size(&res));
 	if (siu_reg == NULL) {
 		ret = -EINVAL;
 		goto out;
diff --git a/arch/powerpc/sysdev/mv64x60_udbg.c b/arch/powerpc/sysdev/mv64x60_udbg.c
index 2792dc8b038c..50a81387e9b1 100644
--- a/arch/powerpc/sysdev/mv64x60_udbg.c
+++ b/arch/powerpc/sysdev/mv64x60_udbg.c
@@ -125,11 +125,11 @@ static void mv64x60_udbg_init(void)
 
 	of_node_put(np);
 
-	mpsc_base = ioremap(r[0].start, r[0].end - r[0].start + 1);
+	mpsc_base = ioremap(r[0].start, resource_size(&r[0]));
 	if (!mpsc_base)
 		return;
 
-	mpsc_intr_cause = ioremap(r[1].start, r[1].end - r[1].start + 1);
+	mpsc_intr_cause = ioremap(r[1].start, resource_size(&r[1]));
 	if (!mpsc_intr_cause) {
 		iounmap(mpsc_base);
 		return;
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 156aa7d36258..deda60a7f996 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -265,7 +265,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
 		if (ppc4xx_setup_one_pci_PMM(hose, reg,
 					     res->start,
 					     res->start - hose->pci_mem_offset,
-					     res->end + 1 - res->start,
+					     resource_size(res),
 					     res->flags,
 					     j) == 0) {
 			j++;
@@ -290,7 +290,7 @@ static void __init ppc4xx_configure_pci_PTMs(struct pci_controller *hose,
 					     void __iomem *reg,
 					     const struct resource *res)
 {
-	resource_size_t size = res->end - res->start + 1;
+	resource_size_t size = resource_size(res);
 	u32 sa;
 
 	/* Calculate window size */
@@ -349,7 +349,7 @@ static void __init ppc4xx_probe_pci_bridge(struct device_node *np)
 	bus_range = of_get_property(np, "bus-range", NULL);
 
 	/* Map registers */
-	reg = ioremap(rsrc_reg.start, rsrc_reg.end + 1 - rsrc_reg.start);
+	reg = ioremap(rsrc_reg.start, resource_size(&rsrc_reg));
 	if (reg == NULL) {
 		printk(KERN_ERR "%s: Can't map registers !", np->full_name);
 		goto fail;
@@ -465,7 +465,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
 		if (ppc4xx_setup_one_pcix_POM(hose, reg,
 					      res->start,
 					      res->start - hose->pci_mem_offset,
-					      res->end + 1 - res->start,
+					      resource_size(res),
 					      res->flags,
 					      j) == 0) {
 			j++;
@@ -492,7 +492,7 @@ static void __init ppc4xx_configure_pcix_PIMs(struct pci_controller *hose,
 					      int big_pim,
 					      int enable_msi_hole)
 {
-	resource_size_t size = res->end - res->start + 1;
+	resource_size_t size = resource_size(res);
 	u32 sa;
 
 	/* RAM is always at 0 */
@@ -555,7 +555,7 @@ static void __init ppc4xx_probe_pcix_bridge(struct device_node *np)
 	bus_range = of_get_property(np, "bus-range", NULL);
 
 	/* Map registers */
-	reg = ioremap(rsrc_reg.start, rsrc_reg.end + 1 - rsrc_reg.start);
+	reg = ioremap(rsrc_reg.start, resource_size(&rsrc_reg));
 	if (reg == NULL) {
 		printk(KERN_ERR "%s: Can't map registers !", np->full_name);
 		goto fail;
@@ -1604,7 +1604,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
 		if (ppc4xx_setup_one_pciex_POM(port, hose, mbase,
 					       res->start,
 					       res->start - hose->pci_mem_offset,
-					       res->end + 1 - res->start,
+					       resource_size(res),
 					       res->flags,
 					       j) == 0) {
 			j++;
@@ -1639,7 +1639,7 @@ static void __init ppc4xx_configure_pciex_PIMs(struct ppc4xx_pciex_port *port,
 					       void __iomem *mbase,
 					       struct resource *res)
 {
-	resource_size_t size = res->end - res->start + 1;
+	resource_size_t size = resource_size(res);
 	u64 sa;
 
 	if (port->endpoint) {
diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.c b/arch/powerpc/sysdev/qe_lib/qe_ic.c
index b2acda07220d..18e75ca19fe6 100644
--- a/arch/powerpc/sysdev/qe_lib/qe_ic.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c
@@ -347,7 +347,7 @@ void __init qe_ic_init(struct device_node *node, unsigned int flags,
 		return;
 	}
 
-	qe_ic->regs = ioremap(res.start, res.end - res.start + 1);
+	qe_ic->regs = ioremap(res.start, resource_size(&res));
 
 	qe_ic->irqhost->host_data = qe_ic;
 	qe_ic->hc_irq = qe_ic_irq_chip;
diff --git a/arch/powerpc/sysdev/qe_lib/qe_io.c b/arch/powerpc/sysdev/qe_lib/qe_io.c
index 77e4934b88c5..fd1a6c3b1721 100644
--- a/arch/powerpc/sysdev/qe_lib/qe_io.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_io.c
@@ -41,7 +41,7 @@ int par_io_init(struct device_node *np)
 	ret = of_address_to_resource(np, 0, &res);
 	if (ret)
 		return ret;
-	par_io = ioremap(res.start, res.end - res.start + 1);
+	par_io = ioremap(res.start, resource_size(&res));
 
 	num_ports = of_get_property(np, "num-ports", NULL);
 	if (num_ports)
diff --git a/arch/powerpc/sysdev/xics/icp-native.c b/arch/powerpc/sysdev/xics/icp-native.c
index 1f15ad436140..039a7820ba7f 100644
--- a/arch/powerpc/sysdev/xics/icp-native.c
+++ b/arch/powerpc/sysdev/xics/icp-native.c
@@ -247,7 +247,7 @@ static int __init icp_native_init_one_node(struct device_node *np,
 			return -1;
 		}
 
-		if (icp_native_map_one_cpu(*indx, r.start, r.end - r.start))
+		if (icp_native_map_one_cpu(*indx, r.start, resource_size(&r)))
 			return -1;
 
 		(*indx)++;