mfd: asic3: use resource_size macro instead of local variable

This should make the code a little bit easier to read.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index ebe8893..d5dd0df 100644 (file)
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -623,7 +623,6 @@ static int __init asic3_probe(struct platform_device *pdev)
        struct asic3 *asic;
        struct resource *mem;
        unsigned long clksel;
-       int map_size;
        int ret = 0;
 
        asic = kzalloc(sizeof(struct asic3), GFP_KERNEL);
@@ -643,8 +642,7 @@ static int __init asic3_probe(struct platform_device *pdev)
                goto out_free;
        }
 
-       map_size = mem->end - mem->start + 1;
-       asic->mapping = ioremap(mem->start, map_size);
+       asic->mapping = ioremap(mem->start, resource_size(mem));
        if (!asic->mapping) {
                ret = -ENOMEM;
                dev_err(asic->dev, "Couldn't ioremap\n");
@@ -654,7 +652,7 @@ static int __init asic3_probe(struct platform_device *pdev)
        asic->irq_base = pdata->irq_base;
 
        /* calculate bus shift from mem resource */
-       asic->bus_shift = 2 - (map_size >> 12);
+       asic->bus_shift = 2 - (resource_size(mem) >> 12);
 
        clksel = 0;
        asic3_write_register(asic, ASIC3_OFFSET(CLOCK, SEL), clksel);