iop-adma.c: use resource_size()

The size of the requested and ioremaped memory is off by 1.
Use resource_size() to get the correct value.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 645ca8d54ec43350059bd8d7c8802f017b4a4abd..ca6e6a0cb7931e32a85b0f9d8da9bb2f5855b63a 100644 (file)
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1470,7 +1470,7 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
                return -ENODEV;
 
        if (!devm_request_mem_region(&pdev->dev, res->start,
-                               res->end - res->start, pdev->name))
+                               resource_size(res), pdev->name))
                return -EBUSY;
 
        adev = kzalloc(sizeof(*adev), GFP_KERNEL);
@@ -1542,7 +1542,7 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
        iop_chan->device = adev;
 
        iop_chan->mmr_base = devm_ioremap(&pdev->dev, res->start,
-                                       res->end - res->start);
+                                       resource_size(res));
        if (!iop_chan->mmr_base) {
                ret = -ENOMEM;
                goto err_free_iop_chan;