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powerpc/papr_scm: Fix resource end address

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Fix an off-by-one error in the memory resource range. This resource is
used to determine the address range of the memory to be hot-plugged as
ZONE_DEVICE memory. The current end address results in the kernel
attempting to map an additional memblock and the hypervisor may reject
the mapping resulting in the entire hot-plug failing.

Fixes: b5beae5e22 ("powerpc/pseries: Add driver for PAPR SCM regions")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Oliver O'Halloran 2018-12-07 02:17:09 +11:00 • committed by Michael Ellerman
commit 5961352611
1 changed files with 1 additions and 1 deletions
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arch/powerpc/platforms/pseries/papr_scm.c
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@ -296,7 +296,7 @@ static int papr_scm_probe(struct platform_device *pdev)
/* setup the resource for the newly bound range */
p->res.start = p->bound_addr;
p->res.end = p->bound_addr + p->blocks * p->block_size;
p->res.end = p->bound_addr + p->blocks * p->block_size - 1;
p->res.name = pdev->name;
p->res.flags = IORESOURCE_MEM;