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Commit c42d3be0 authored by Dan Carpenter's avatar Dan Carpenter Committed by Michael Ellerman
Browse files

powerpc: Fix size calculation using resource_size() 



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

Fixes: 8626816e ("powerpc: add support for MPIC message register API")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: default avatarTyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 24576a70

arch/powerpc/sysdev/mpic_msgr.c

+1 −1
Original line number Diff line number Diff line
@@ -196,7 +196,7 @@ static int mpic_msgr_probe(struct platform_device *dev) 


	/* IO map the message register block. */

	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) {

		dev_err(&dev->dev, "Failed to iomap MPIC message registers");

		return -EFAULT;