diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-08-08 14:57:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-15 09:40:39 +0200 |
| commit | f675ab001e78e6bff87bfd0018175119c3a5796b (patch) | |
| tree | ef96c85119ce50f82de361b8b631b425ec0f5c2b /arch | |
| parent | 75c55cbd46b15113f74a31ddfc8fa0930826e371 (diff) | |
powerpc: Fix size calculation using resource_size()
[ Upstream commit c42d3be0c06f0c1c416054022aa535c08a1f9b39 ]
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 <dan.carpenter@oracle.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/sysdev/mpic_msgr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c index 3f165d972a0e..994fe73c2ed0 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; |