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| author | Oliver O'Halloran | 2016-09-19 12:19:00 +0200 |
|---|---|---|
| committer | Dan Williams | 2016-09-19 17:54:27 +0200 |
| commit | 480b6837aa579991c6acc113bccf838e6a90843c (patch) | |
| tree | 71aca7c1b20a42e451eca88044a2a81a777e827a /drivers/nvdimm | |
| parent | Linux 4.8-rc7 (diff) | |
| download | kernel-qcow2-linux-480b6837aa579991c6acc113bccf838e6a90843c.tar.gz kernel-qcow2-linux-480b6837aa579991c6acc113bccf838e6a90843c.tar.xz kernel-qcow2-linux-480b6837aa579991c6acc113bccf838e6a90843c.zip | |
nvdimm: fix PHYS_PFN/PFN_PHYS mixup
nd_activate_region() iomaps any hint addresses required when activating
a region. To prevent duplicate mappings it checks the PFN of the hint to
be mapped against the PFNs of the already mapped hints. Unfortunately it
doesn't convert the PFN back into a physical address before passing it
to devm_nvdimm_ioremap(). Instead it applies PHYS_PFN a second time
which ends about as well as you would imagine.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index e8d5ba7b29af..4eef88eb5144 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -57,7 +57,7 @@ static int nvdimm_map_flush(struct device *dev, struct nvdimm *nvdimm, int dimm, ndrd->flush_wpq[dimm][j] & PAGE_MASK); else flush_page = devm_nvdimm_ioremap(dev, - PHYS_PFN(pfn), PAGE_SIZE); + PFN_PHYS(pfn), PAGE_SIZE); if (!flush_page) return -ENXIO; ndrd->flush_wpq[dimm][i] = flush_page |