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>

57 files changed, 103 insertions, 110 deletions

diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c
index c11af1e4bad3..a07b0e763a80 100644
--- a/arch/arm/common/scoop.c
+++ b/arch/arm/common/scoop.c
@@ -193,7 +193,7 @@ static int __devinit scoop_probe(struct platform_device *pdev)
         spin_lock_init(&devptr->scoop_lock);
 
         inf = pdev->dev.platform_data;
-        devptr->base = ioremap(mem->start, mem->end - mem->start + 1);
+        devptr->base = ioremap(mem->start, resource_size(mem));
 
         if (!devptr->base) {
                 ret = -ENOMEM;
diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 3eb4538fceeb..14dd666850b0 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -525,7 +525,7 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
         if (ARRAY_SIZE(lcdc_resources) > 2) {
                 void __iomem *fb;
                 struct resource *fb_res = &lcdc_resources[2];
-                size_t fb_len = fb_res->end - fb_res->start + 1;
+                size_t fb_len = resource_size(fb_res);
 
                 fb = ioremap(fb_res->start, fb_len);
                 if (fb) {
diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c
index a560439dcc3c..f27c7d2fa9f7 100644
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -129,12 +129,12 @@ static void __init mv78xx0_pcie_preinit(void)
                 struct pcie_port *pp = pcie_port + i;
 
                 mv78xx0_setup_pcie_io_win(win++, pp->res[0].start,
-                        pp->res[0].end - pp->res[0].start + 1,
-                        pp->maj, pp->min);
+                                          resource_size(&pp->res[0]),
+                                          pp->maj, pp->min);
 
                 mv78xx0_setup_pcie_mem_win(win++, pp->res[1].start,
-                        pp->res[1].end - pp->res[1].start + 1,
-                        pp->maj, pp->min);
+                                           resource_size(&pp->res[1]),
+                                           pp->maj, pp->min);
         }
 }
 
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index 513d6abec1f5..399c89f14dfb 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -1791,7 +1791,7 @@ static void __init u300_assign_physmem(void)
                                      0 == res->start) {
                                 res->start  = curr_start;
                                 res->end   += curr_start;
-                                curr_start += (res->end - res->start + 1);
+                                curr_start += resource_size(res);
 
                                 printk(KERN_INFO "core.c: Mapping RAM " \
                                        "%#x-%#x to device %s:%s\n",
diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
index 7a61ef8f471a..761c3c940a68 100644
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -214,14 +214,14 @@ static int __devinit mxc_pwm_probe(struct platform_device *pdev)
                 goto err_free_clk;
         }
 
-        r = request_mem_region(r->start, r->end - r->start + 1, pdev->name);
+        r = request_mem_region(r->start, resource_size(r), pdev->name);
         if (r == NULL) {
                 dev_err(&pdev->dev, "failed to request memory resource\n");
                 ret = -EBUSY;
                 goto err_free_clk;
         }
 
-        pwm->mmio_base = ioremap(r->start, r->end - r->start + 1);
+        pwm->mmio_base = ioremap(r->start, resource_size(r));
         if (pwm->mmio_base == NULL) {
                 dev_err(&pdev->dev, "failed to ioremap() registers\n");
                 ret = -ENODEV;
@@ -236,7 +236,7 @@ static int __devinit mxc_pwm_probe(struct platform_device *pdev)
         return 0;
 
 err_free_mem:
-        release_mem_region(r->start, r->end - r->start + 1);
+        release_mem_region(r->start, resource_size(r));
 err_free_clk:
         clk_put(pwm->clk);
 err_free:
@@ -260,7 +260,7 @@ static int __devexit mxc_pwm_remove(struct platform_device *pdev)
         iounmap(pwm->mmio_base);
 
         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        release_mem_region(r->start, r->end - r->start + 1);
+        release_mem_region(r->start, resource_size(r));
 
         clk_put(pwm->clk);
 
diff --git a/arch/arm/plat-s5p/sysmmu.c b/arch/arm/plat-s5p/sysmmu.c
index 54f5eddc921d..e1cbc728c775 100644
--- a/arch/arm/plat-s5p/sysmmu.c
+++ b/arch/arm/plat-s5p/sysmmu.c
@@ -232,8 +232,8 @@ static int s5p_sysmmu_probe(struct platform_device *pdev)
                         goto err_res;
                 }
 
-                mem = request_mem_region(res->start,
-                                ((res->end) - (res->start)) + 1, pdev->name);
+                mem = request_mem_region(res->start, resource_size(res),
+                                         pdev->name);
                 if (!mem) {
                         dev_err(dev, "Failed to request the memory region of %s.\n",
                                                         sysmmu_ips_name[i]);
@@ -241,7 +241,7 @@ static int s5p_sysmmu_probe(struct platform_device *pdev)
                         goto err_res;
                 }
 
-                sysmmusfrs[i] = ioremap(res->start, res->end - res->start + 1);
+                sysmmusfrs[i] = ioremap(res->start, resource_size(res));
                 if (!sysmmusfrs[i]) {
                         dev_err(dev, "Failed to ioremap() for %s.\n",
                                                         sysmmu_ips_name[i]);
diff --git a/arch/arm/plat-samsung/pm-check.c b/arch/arm/plat-samsung/pm-check.c
index 6b733fafe7cd..3cbd62666b1e 100644
--- a/arch/arm/plat-samsung/pm-check.c
+++ b/arch/arm/plat-samsung/pm-check.c
@@ -72,7 +72,7 @@ static void s3c_pm_run_sysram(run_fn_t fn, u32 *arg)
 
 static u32 *s3c_pm_countram(struct resource *res, u32 *val)
 {
-        u32 size = (u32)(res->end - res->start)+1;
+        u32 size = (u32)resource_size(res);
 
         size += CHECK_CHUNKSIZE-1;
         size /= CHECK_CHUNKSIZE;
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
index bb0974cce4ac..b4247f478065 100644
--- a/arch/avr32/kernel/setup.c
+++ b/arch/avr32/kernel/setup.c
@@ -444,7 +444,7 @@ static unsigned long __init
 find_bootmap_pfn(const struct resource *mem)
 {
         unsigned long bootmap_pages, bootmap_len;
-        unsigned long node_pages = PFN_UP(mem->end - mem->start + 1);
+        unsigned long node_pages = PFN_UP(resource_size(mem));
         unsigned long bootmap_start;
 
         bootmap_pages = bootmem_bootmap_pages(node_pages);
@@ -541,10 +541,10 @@ static void __init setup_bootmem(void)
                          */
                         if (res->start >= PFN_PHYS(first_pfn)
                             && res->end < PFN_PHYS(max_pfn))
-                                reserve_bootmem_node(
-                                        NODE_DATA(node), res->start,
-                                        res->end - res->start + 1,
-                                        BOOTMEM_DEFAULT);
+                                reserve_bootmem_node(NODE_DATA(node),
+                                                     res->start,
+                                                     resource_size(res),
+                                                     BOOTMEM_DEFAULT);
                 }
 
                 node_set_online(node);
diff --git a/arch/avr32/mach-at32ap/extint.c b/arch/avr32/mach-at32ap/extint.c
index fbc2aeaebddb..cfb298d66305 100644
--- a/arch/avr32/mach-at32ap/extint.c
+++ b/arch/avr32/mach-at32ap/extint.c
@@ -204,7 +204,7 @@ static int __init eic_probe(struct platform_device *pdev)
         }
 
         eic->first_irq = EIM_IRQ_BASE + 32 * pdev->id;
-        eic->regs = ioremap(regs->start, regs->end - regs->start + 1);
+        eic->regs = ioremap(regs->start, resource_size(regs));
         if (!eic->regs) {
                 dev_dbg(&pdev->dev, "failed to map regs\n");
                 goto err_ioremap;
diff --git a/arch/avr32/mach-at32ap/hsmc.c b/arch/avr32/mach-at32ap/hsmc.c
index f7672d3e86b8..f66245e6e63e 100644
--- a/arch/avr32/mach-at32ap/hsmc.c
+++ b/arch/avr32/mach-at32ap/hsmc.c
@@ -245,7 +245,7 @@ static int hsmc_probe(struct platform_device *pdev)
 
         hsmc->pclk = pclk;
         hsmc->mck = mck;
-        hsmc->regs = ioremap(regs->start, regs->end - regs->start + 1);
+        hsmc->regs = ioremap(regs->start, resource_size(regs));
         if (!hsmc->regs)
                 goto out_disable_clocks;
 
diff --git a/arch/avr32/mach-at32ap/intc.c b/arch/avr32/mach-at32ap/intc.c
index 3e3646186c9f..6c700431e34a 100644
--- a/arch/avr32/mach-at32ap/intc.c
+++ b/arch/avr32/mach-at32ap/intc.c
@@ -107,7 +107,7 @@ void __init init_IRQ(void)
 
         clk_enable(pclk);
 
-        intc0.regs = ioremap(regs->start, regs->end - regs->start + 1);
+        intc0.regs = ioremap(regs->start, resource_size(regs));
         if (!intc0.regs) {
                 printk(KERN_EMERG "intc: failed to map registers (0x%08lx)\n",
                        (unsigned long)regs->start);
diff --git a/arch/avr32/mach-at32ap/pio.c b/arch/avr32/mach-at32ap/pio.c
index 2e0aa853a4bc..9b39dea6682f 100644
--- a/arch/avr32/mach-at32ap/pio.c
+++ b/arch/avr32/mach-at32ap/pio.c
@@ -461,7 +461,7 @@ void __init at32_init_pio(struct platform_device *pdev)
                 clk_enable(pio->clk);
 
         pio->pdev = pdev;
-        pio->regs = ioremap(regs->start, regs->end - regs->start + 1);
+        pio->regs = ioremap(regs->start, resource_size(regs));
 
         /* start with irqs disabled and acked */
         pio_writel(pio, IDR, ~0UL);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 53599067d2f9..dd3fae06ece4 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -89,7 +89,7 @@ void pcibios_free_controller(struct pci_controller *phb)
 
 static resource_size_t pcibios_io_size(const struct pci_controller *hose)
 {
-        return hose->io_resource.end - hose->io_resource.start + 1;
+        return resource_size(&hose->io_resource);
 }
 
 int pcibios_vaddr_is_ioport(void __iomem *address)
diff --git a/arch/mips/pci/pci-rc32434.c b/arch/mips/pci/pci-rc32434.c
index f31218e17d3c..764362ce5e40 100644
--- a/arch/mips/pci/pci-rc32434.c
+++ b/arch/mips/pci/pci-rc32434.c
@@ -215,7 +215,7 @@ static int __init rc32434_pci_init(void)
         rc32434_pcibridge_init();
 
         io_map_base = ioremap(rc32434_res_pci_io1.start,
-                rc32434_res_pci_io1.end - rc32434_res_pci_io1.start + 1);
+                              resource_size(&rcrc32434_res_pci_io1));
 
         if (!io_map_base)
                 return -ENOMEM;
diff --git a/arch/mips/pci/pci-vr41xx.c b/arch/mips/pci/pci-vr41xx.c
index 56525711f8b7..444b8d8004ad 100644
--- a/arch/mips/pci/pci-vr41xx.c
+++ b/arch/mips/pci/pci-vr41xx.c
@@ -305,7 +305,7 @@ static int __init vr41xx_pciu_init(void)
                 struct resource *res = vr41xx_pci_controller.io_resource;
                 master = setup->master_io;
                 io_map_base = ioremap(master->bus_base_address,
-                                      res->end - res->start + 1);
+                                      resource_size(res));
                 if (!io_map_base)
                         return -EBUSY;
 
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c
index e56fa61b3991..bce1872249ba 100644
--- a/arch/mips/powertv/asic/asic_devices.c
+++ b/arch/mips/powertv/asic/asic_devices.c
@@ -394,23 +394,21 @@ void __init platform_alloc_bootmem(void)
 
         /* Loop through looking for resources that want a particular address */
         for (i = 0; gp_resources[i].flags != 0; i++) {
-                int size = gp_resources[i].end - gp_resources[i].start + 1;
+                int size = resource_size(&gp_resources[i]);
                 if ((gp_resources[i].start != 0) &&
                         ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) {
                         reserve_bootmem(dma_to_phys(gp_resources[i].start),
                                 size, 0);
-                        total += gp_resources[i].end -
-                                gp_resources[i].start + 1;
+                        total += resource_size(&gp_resources[i]);
                         pr_info("reserve resource %s at %08x (%u bytes)\n",
                                 gp_resources[i].name, gp_resources[i].start,
-                                gp_resources[i].end -
-                                        gp_resources[i].start + 1);
+                                resource_size(&gp_resources[i]));
                 }
         }
 
         /* Loop through assigning addresses for those that are left */
         for (i = 0; gp_resources[i].flags != 0; i++) {
-                int size = gp_resources[i].end - gp_resources[i].start + 1;
+                int size = resource_size(&gp_resources[i]);
                 if ((gp_resources[i].start == 0) &&
                         ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) {
                         void *mem = alloc_bootmem_pages(size);
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)++;
diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index 32c385ef1011..0f62f4672754 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -58,7 +58,7 @@ int register_trapped_io(struct trapped_io *tiop)
 
         for (k = 0; k < tiop->num_resources; k++) {
                 res = tiop->resource + k;
-                len += roundup((res->end - res->start) + 1, PAGE_SIZE);
+                len += roundup(resource_size(res), PAGE_SIZE);
                 flags |= res->flags;
         }
 
@@ -85,7 +85,7 @@ int register_trapped_io(struct trapped_io *tiop)
                        (unsigned long)(tiop->virt_base + len),
                        res->flags & IORESOURCE_IO ? "io" : "mmio",
                        (unsigned long)res->start);
-                len += roundup((res->end - res->start) + 1, PAGE_SIZE);
+                len += roundup(resource_size(res), PAGE_SIZE);
         }
 
         tiop->magic = IO_TRAPPED_MAGIC;
@@ -128,7 +128,7 @@ void __iomem *match_trapped_io_handler(struct list_head *list,
                                 return tiop->virt_base + voffs;
                         }
 
-                        len = (res->end - res->start) + 1;
+                        len = resource_size(res);
                         voffs += roundup(len, PAGE_SIZE);
                 }
         }
@@ -173,7 +173,7 @@ static unsigned long lookup_address(struct trapped_io *tiop,
 
         for (k = 0; k < tiop->num_resources; k++) {
                 res = tiop->resource + k;
-                len = roundup((res->end - res->start) + 1, PAGE_SIZE);
+                len = roundup(resource_size(res), PAGE_SIZE);
                 if (address < (vaddr + len))
                         return res->start + (address - vaddr);
                 vaddr += len;
diff --git a/arch/sh/kernel/machine_kexec.c b/arch/sh/kernel/machine_kexec.c
index e2a3af31ff99..c5a33f007f88 100644
--- a/arch/sh/kernel/machine_kexec.c
+++ b/arch/sh/kernel/machine_kexec.c
@@ -170,7 +170,7 @@ void __init reserve_crashkernel(void)
         if (crashk_res.end == crashk_res.start)
                 goto disable;
 
-        crash_size = PAGE_ALIGN(crashk_res.end - crashk_res.start + 1);
+        crash_size = PAGE_ALIGN(resource_size(&crashk_res));
         if (!crashk_res.start) {
                 unsigned long max = memblock_end_of_DRAM() - memory_limit;
                 crashk_res.start = __memblock_alloc_base(crash_size, PAGE_SIZE, max);
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 1c9c80a1a86a..6ffccd6e0156 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -228,7 +228,7 @@ _sparc_ioremap(struct resource *res, u32 bus, u32 pa, int sz)
         }
 
         pa &= PAGE_MASK;
-        sparc_mapiorange(bus, pa, res->start, res->end - res->start + 1);
+        sparc_mapiorange(bus, pa, res->start, resource_size(res));
 
         return (void __iomem *)(unsigned long)(res->start + offset);
 }
@@ -240,7 +240,7 @@ static void _sparc_free_io(struct resource *res)
 {
         unsigned long plen;
 
-        plen = res->end - res->start + 1;
+        plen = resource_size(res);
         BUG_ON((plen & (PAGE_SIZE-1)) != 0);
         sparc_unmapiorange(res->start, plen);
         release_resource(res);
@@ -331,9 +331,9 @@ static void sbus_free_coherent(struct device *dev, size_t n, void *p,
         }
 
         n = PAGE_ALIGN(n);
-        if ((res->end-res->start)+1 != n) {
+        if (resource_size(res) != n) {
                 printk("sbus_free_consistent: region 0x%lx asked 0x%zx\n",
-                    (long)((res->end-res->start)+1), n);
+                    (long)resource_size(res), n);
                 return;
         }
 
@@ -504,9 +504,9 @@ static void pci32_free_coherent(struct device *dev, size_t n, void *p,
         }
 
         n = PAGE_ALIGN(n);
-        if ((res->end-res->start)+1 != n) {
+        if (resource_size(res) != n) {
                 printk("pci_free_consistent: region 0x%lx asked 0x%lx\n",
-                    (long)((res->end-res->start)+1), (long)n);
+                    (long)resource_size(res), (long)n);
                 return;
         }
 
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 713dc91020a6..2d1453dd93d5 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -820,11 +820,9 @@ static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struc
         unsigned long space_size, user_offset, user_size;
 
         if (mmap_state == pci_mmap_io) {
-                space_size = (pbm->io_space.end -
-                              pbm->io_space.start) + 1;
+                space_size = resource_size(&pbm->io_space);
         } else {
-                space_size = (pbm->mem_space.end -
-                              pbm->mem_space.start) + 1;
+                space_size = resource_size(&pbm->mem_space);
         }
 
         /* Make sure the request is in range. */
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index 6cdc9ba55fe0..5f85d8b34dbb 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -553,8 +553,7 @@ static void __init setup_bootmem_allocator(void)
 
 #ifdef CONFIG_KEXEC
         if (crashk_res.start != crashk_res.end)
-                reserve_bootmem(crashk_res.start,
-                        crashk_res.end - crashk_res.start + 1, 0);
+                reserve_bootmem(crashk_res.start, resource_size(&crashk_res), 0);
 #endif
 }
 
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index e8c33a302006..726494b58345 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1553,7 +1553,7 @@ static void __init calgary_fixup_one_tce_space(struct pci_dev *dev)
                         continue;
 
                 /* cover the whole region */
-                npages = (r->end - r->start) >> PAGE_SHIFT;
+                npages = resource_size(r) >> PAGE_SHIFT;
                 npages++;
 
                 iommu_range_reserve(tbl, r->start, npages);
diff --git a/arch/x86/kernel/probe_roms.c b/arch/x86/kernel/probe_roms.c
index ba0a4cce53be..63228035f9d7 100644
--- a/arch/x86/kernel/probe_roms.c
+++ b/arch/x86/kernel/probe_roms.c
@@ -234,7 +234,7 @@ void __init probe_roms(void)
         /* check for extension rom (ignore length byte!) */
         rom = isa_bus_to_virt(extension_rom_resource.start);
         if (romsignature(rom)) {
-                length = extension_rom_resource.end - extension_rom_resource.start + 1;
+                length = resource_size(&extension_rom_resource);
                 if (romchecksum(rom, length)) {
                         request_resource(&iomem_resource, &extension_rom_resource);
                         upper = extension_rom_resource.start;