i2c: Use resource_size macro

This replace all instances in the i2c busses tree of
res->end - res->start + 1 with the handy macro resource_size(res)
from ioport.h (coming in from platform_device.h).

This was created with a simple
sed -i -e 's/\([a-z]*\)->end *- *[a-z]*->start *+ *1/resource_size(\1)/g'

Then manually replacing the PXA redefiniton of the same kind
of macro manually. Recompiled some ARM defconfigs I could find to
make a rough test so it shouldn't break anything, though I
couldn't see exactly which configs you need for all the drivers.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

11 files changed, 28 insertions, 31 deletions

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 67d9dc5b351b..06e1ecb4919f 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -200,10 +200,10 @@ static int __devinit at91_i2c_probe(struct platform_device *pdev)
         if (!res)
                 return -ENXIO;
 
-        if (!request_mem_region(res->start, res->end - res->start + 1, "at91_i2c"))
+        if (!request_mem_region(res->start, resource_size(res), "at91_i2c"))
                 return -EBUSY;
 
-        twi_base = ioremap(res->start, res->end - res->start + 1);
+        twi_base = ioremap(res->start, resource_size(res));
         if (!twi_base) {
                 rc = -ENOMEM;
                 goto fail0;
@@ -252,7 +252,7 @@ fail2:
 fail1:
         iounmap(twi_base);
 fail0:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 
         return rc;
 }
@@ -268,7 +268,7 @@ static int __devexit at91_i2c_remove(struct platform_device *pdev)
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         iounmap(twi_base);
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 
         clk_disable(twi_clk);           /* disable peripheral clock */
         clk_put(twi_clk);
diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index f78ce523e3db..532828bc50e6 100644
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -389,7 +389,7 @@ i2c_au1550_probe(struct platform_device *pdev)
                 goto out;
         }
 
-        priv->ioarea = request_mem_region(r->start, r->end - r->start + 1,
+        priv->ioarea = request_mem_region(r->start, resource_size(r),
                                           pdev->name);
         if (!priv->ioarea) {
                 ret = -EBUSY;
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 9fb114c274af..b309ac2c3d5c 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -652,7 +652,7 @@ static int i2c_bfin_twi_probe(struct platform_device *pdev)
                 goto out_error_get_res;
         }
 
-        iface->regs_base = ioremap(res->start, res->end - res->start + 1);
+        iface->regs_base = ioremap(res->start, resource_size(res));
         if (iface->regs_base == NULL) {
                 dev_err(&pdev->dev, "Cannot map IO\n");
                 rc = -ENXIO;
diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c
index e5a8dae4a289..87ecace415da 100644
--- a/drivers/i2c/busses/i2c-highlander.c
+++ b/drivers/i2c/busses/i2c-highlander.c
@@ -373,7 +373,7 @@ static int __devinit highlander_i2c_probe(struct platform_device *pdev)
         if (unlikely(!dev))
                 return -ENOMEM;
 
-        dev->base = ioremap_nocache(res->start, res->end - res->start + 1);
+        dev->base = ioremap_nocache(res->start, resource_size(res));
         if (unlikely(!dev->base)) {
                 ret = -ENXIO;
                 goto err;
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 5a4945d1dba4..c3869d94ad42 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -469,7 +469,7 @@ mv64xxx_i2c_map_regs(struct platform_device *pd,
         if (!r)
                 return -ENODEV;
 
-        size = r->end - r->start + 1;
+        size = resource_size(r);
 
         if (!request_mem_region(r->start, size, drv_data->adapter.name))
                 return -EBUSY;
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index 3542c6ba98f1..0dabe643ec51 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -234,14 +234,14 @@ static int __devinit ocores_i2c_probe(struct platform_device *pdev)
         if (!i2c)
                 return -ENOMEM;
 
-        if (!request_mem_region(res->start, res->end - res->start + 1,
+        if (!request_mem_region(res->start, resource_size(res),
                                 pdev->name)) {
                 dev_err(&pdev->dev, "Memory region busy\n");
                 ret = -EBUSY;
                 goto request_mem_failed;
         }
 
-        i2c->base = ioremap(res->start, res->end - res->start + 1);
+        i2c->base = ioremap(res->start, resource_size(res));
         if (!i2c->base) {
                 dev_err(&pdev->dev, "Unable to map registers\n");
                 ret = -EIO;
@@ -283,7 +283,7 @@ add_adapter_failed:
 request_irq_failed:
         iounmap(i2c->base);
 map_failed:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 request_mem_failed:
         kfree(i2c);
 
@@ -311,7 +311,7 @@ static int __devexit ocores_i2c_remove(struct platform_device* pdev)
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (res)
-                release_mem_region(res->start, res->end - res->start + 1);
+                release_mem_region(res->start, resource_size(res));
 
         kfree(i2c);
 
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index c73475dd0fba..b606db85525d 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -828,7 +828,7 @@ omap_i2c_probe(struct platform_device *pdev)
         dev->idle = 1;
         dev->dev = &pdev->dev;
         dev->irq = irq->start;
-        dev->base = ioremap(mem->start, mem->end - mem->start + 1);
+        dev->base = ioremap(mem->start, resource_size(mem));
         if (!dev->base) {
                 r = -ENOMEM;
                 goto err_free_mem;
diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c
index 7b23891b7d59..c4df9d411cd5 100644
--- a/drivers/i2c/busses/i2c-pca-platform.c
+++ b/drivers/i2c/busses/i2c-pca-platform.c
@@ -27,8 +27,6 @@
 #include <asm/irq.h>
 #include <asm/io.h>
 
-#define res_len(r)              ((r)->end - (r)->start + 1)
-
 struct i2c_pca_pf_data {
         void __iomem                    *reg_base;
         int                             irq;    /* if 0, use polling */
@@ -148,7 +146,7 @@ static int __devinit i2c_pca_pf_probe(struct platform_device *pdev)
                 goto e_print;
         }
 
-        if (!request_mem_region(res->start, res_len(res), res->name)) {
+        if (!request_mem_region(res->start, resource_size(res), res->name)) {
                 ret = -ENOMEM;
                 goto e_print;
         }
@@ -161,13 +159,13 @@ static int __devinit i2c_pca_pf_probe(struct platform_device *pdev)
 
         init_waitqueue_head(&i2c->wait);
 
-        i2c->reg_base = ioremap(res->start, res_len(res));
+        i2c->reg_base = ioremap(res->start, resource_size(res));
         if (!i2c->reg_base) {
                 ret = -ENOMEM;
                 goto e_remap;
         }
         i2c->io_base = res->start;
-        i2c->io_size = res_len(res);
+        i2c->io_size = resource_size(res);
         i2c->irq = irq;
 
         i2c->adap.nr = pdev->id >= 0 ? pdev->id : 0;
@@ -250,7 +248,7 @@ e_reqirq:
 e_remap:
         kfree(i2c);
 e_alloc:
-        release_mem_region(res->start, res_len(res));
+        release_mem_region(res->start, resource_size(res));
 e_print:
         printk(KERN_ERR "Registering PCA9564/PCA9665 FAILED! (%d)\n", ret);
         return ret;
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index 0bdb2d7f0570..7b57d5f267e1 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -283,7 +283,7 @@ static int __devinit pmcmsptwi_probe(struct platform_device *pldev)
         }
 
         /* reserve the memory region */
-        if (!request_mem_region(res->start, res->end - res->start + 1,
+        if (!request_mem_region(res->start, resource_size(res),
                                 pldev->name)) {
                 dev_err(&pldev->dev,
                         "Unable to get memory/io address region 0x%08x\n",
@@ -294,7 +294,7 @@ static int __devinit pmcmsptwi_probe(struct platform_device *pldev)
 
         /* remap the memory */
         pmcmsptwi_data.iobase = ioremap_nocache(res->start,
-                                                res->end - res->start + 1);
+                                                resource_size(res));
         if (!pmcmsptwi_data.iobase) {
                 dev_err(&pldev->dev,
                         "Unable to ioremap address 0x%08x\n", res->start);
@@ -360,7 +360,7 @@ ret_unmap:
         iounmap(pmcmsptwi_data.iobase);
 
 ret_unreserve:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 
 ret_err:
         return rc;
@@ -385,7 +385,7 @@ static int __devexit pmcmsptwi_remove(struct platform_device *pldev)
         iounmap(pmcmsptwi_data.iobase);
 
         res = platform_get_resource(pldev, IORESOURCE_MEM, 0);
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 
         return 0;
 }
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 035a6c7e59df..762e1e530882 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -993,7 +993,6 @@ static const struct i2c_algorithm i2c_pxa_pio_algorithm = {
         .functionality  = i2c_pxa_functionality,
 };
 
-#define res_len(r)              ((r)->end - (r)->start + 1)
 static int i2c_pxa_probe(struct platform_device *dev)
 {
         struct pxa_i2c *i2c;
@@ -1008,7 +1007,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
         if (res == NULL || irq < 0)
                 return -ENODEV;
 
-        if (!request_mem_region(res->start, res_len(res), res->name))
+        if (!request_mem_region(res->start, resource_size(res), res->name))
                 return -ENOMEM;
 
         i2c = kzalloc(sizeof(struct pxa_i2c), GFP_KERNEL);
@@ -1038,7 +1037,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
                 goto eclk;
         }
 
-        i2c->reg_base = ioremap(res->start, res_len(res));
+        i2c->reg_base = ioremap(res->start, resource_size(res));
         if (!i2c->reg_base) {
                 ret = -EIO;
                 goto eremap;
@@ -1046,7 +1045,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
         i2c->reg_shift = REG_SHIFT(id->driver_data);
 
         i2c->iobase = res->start;
-        i2c->iosize = res_len(res);
+        i2c->iosize = resource_size(res);
 
         i2c->irq = irq;
 
@@ -1110,7 +1109,7 @@ eremap:
 eclk:
         kfree(i2c);
 emalloc:
-        release_mem_region(res->start, res_len(res));
+        release_mem_region(res->start, resource_size(res));
         return ret;
 }
 
diff --git a/drivers/i2c/busses/i2c-versatile.c b/drivers/i2c/busses/i2c-versatile.c
index fede619ba227..70de82163463 100644
--- a/drivers/i2c/busses/i2c-versatile.c
+++ b/drivers/i2c/busses/i2c-versatile.c
@@ -76,7 +76,7 @@ static int i2c_versatile_probe(struct platform_device *dev)
                 goto err_out;
         }
 
-        if (!request_mem_region(r->start, r->end - r->start + 1, "versatile-i2c")) {
+        if (!request_mem_region(r->start, resource_size(r), "versatile-i2c")) {
                 ret = -EBUSY;
                 goto err_out;
         }
@@ -87,7 +87,7 @@ static int i2c_versatile_probe(struct platform_device *dev)
                 goto err_release;
         }
 
-        i2c->base = ioremap(r->start, r->end - r->start + 1);
+        i2c->base = ioremap(r->start, resource_size(r));
         if (!i2c->base) {
                 ret = -ENOMEM;
                 goto err_free;
@@ -118,7 +118,7 @@ static int i2c_versatile_probe(struct platform_device *dev)
  err_free:
         kfree(i2c);
  err_release:
-        release_mem_region(r->start, r->end - r->start + 1);
+        release_mem_region(r->start, resource_size(r));
  err_out:
         return ret;
 }