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powerpc: Fix size calculation using resource_size()

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The problem is the the calculation should be "end - start + 1" but the
plus one is missing in this calculation.

Fixes: 8626816e90 ("powerpc: add support for MPIC message register API")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Dan Carpenter 2018-08-08 14:57:24 +03:00 committed by Michael Ellerman
parent 24576a70e7
commit c42d3be0c0
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/sysdev/mpic_msgr.c
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@ -196,7 +196,7 @@ static int mpic_msgr_probe(struct platform_device *dev)
/* IO map the message register block. */ /* IO map the message register block. */
of_address_to_resource(np, 0, &rsrc); of_address_to_resource(np, 0, &rsrc);
msgr_block_addr = ioremap(rsrc.start, rsrc.end - rsrc.start); msgr_block_addr = ioremap(rsrc.start, resource_size(&rsrc));
if (!msgr_block_addr) { if (!msgr_block_addr) {
dev_err(&dev->dev, "Failed to iomap MPIC message registers"); dev_err(&dev->dev, "Failed to iomap MPIC message registers");
return -EFAULT; return -EFAULT;