dma: at_hdmac.c: use resource_size

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

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 36144f88d718f383b232b25d168030077f6769d3..6a483eac7b3f2d971cabae0aceaf022a42866558 100644 (file)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1216,7 +1216,7 @@ static int __init at_dma_probe(struct platform_device *pdev)
        atdma->dma_common.cap_mask = pdata->cap_mask;
        atdma->all_chan_mask = (1 << pdata->nr_channels) - 1;
 
-       size = io->end - io->start + 1;
+       size = resource_size(io);
        if (!request_mem_region(io->start, size, pdev->dev.driver->name)) {
                err = -EBUSY;
                goto err_kfree;
@@ -1362,7 +1362,7 @@ static int __exit at_dma_remove(struct platform_device *pdev)
        atdma->regs = NULL;
 
        io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       release_mem_region(io->start, io->end - io->start + 1);
+       release_mem_region(io->start, resource_size(io));
 
        kfree(atdma);