From c42d3be0c06f0c1c416054022aa535c08a1f9b39 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 8 Aug 2018 14:57:24 +0300 Subject: [PATCH] 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: 8626816e905e ("powerpc: add support for MPIC message register API") Signed-off-by: Dan Carpenter Reviewed-by: Tyrel Datwyler Signed-off-by: Michael Ellerman --- arch/powerpc/sysdev/mpic_msgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c index eb69a5186243..280e964e1aa8 100644 --- a/arch/powerpc/sysdev/mpic_msgr.c +++ b/arch/powerpc/sysdev/mpic_msgr.c @@ -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; -- 2.30.2