redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

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>
hifive-unleashed-5.1
Oliver O'Halloran 2016-09-19 20:19:00 +10:00 committed by Dan Williams
parent 3be7988674
commit 480b6837aa
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/nvdimm/region_devs.c
View File

@ -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