linux-kernel - [PATCH] iop-adma.c: use resource

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Date:	Thu, 10 Dec 2009 20:56:38 -0500
From:	"H Hartley Sweeten" <hartleys@...ionengravers.com>
To:	"kernel list" <linux-kernel@...r.kernel.org>
Cc:	<dan.j.williams@...el.com>
Subject: [PATCH] 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@...ionengravers.com>
Cc: Dan Williams <dan.j.williams@...el.com>

---

diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 645ca8d..ca6e6a0 100644
--- 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; 
--
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