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authorAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>2019-08-09 10:47:26 +0300
committerDan Williams <dan.j.williams@intel.com>2019-09-24 20:23:44 +0300
commit86aa66687442ef45909ff9814b82b4d2bb892294 (patch)
treec79bb8c499fa10ea06cbc5865ebf6522ce5fcc4a /drivers/nvdimm/namespace_devs.c
parentf537669978a7abae29c1d3b489f300e4d8f47005 (diff)
downloadlinux-86aa66687442ef45909ff9814b82b4d2bb892294.tar.xz
libnvdimm: Fix endian conversion issues 
nd_label->dpa issue was observed when trying to enable the namespace created with little-endian kernel on a big-endian kernel. That made me run `sparse` on the rest of the code and other changes are the result of that. Fixes: d9b83c756953 ("libnvdimm, btt: rework error clearing") Fixes: 9dedc73a4658 ("libnvdimm/btt: Fix LBA masking during 'free list' population") Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Link: https://lore.kernel.org/r/20190809074726.27815-1-aneesh.kumar@linux.ibm.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/namespace_devs.c')
-rw-r--r--drivers/nvdimm/namespace_devs.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index 43401325c874..cca0a3ba1d2c 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -1987,7 +1987,7 @@ static struct device *create_namespace_pmem(struct nd_region *nd_region,
nd_mapping = &nd_region->mapping[i];
label_ent = list_first_entry_or_null(&nd_mapping->labels,
typeof(*label_ent), list);
- label0 = label_ent ? label_ent->label : 0;
+ label0 = label_ent ? label_ent->label : NULL;
if (!label0) {
WARN_ON(1);
@@ -2322,8 +2322,9 @@ static struct device **scan_labels(struct nd_region *nd_region)
continue;
/* skip labels that describe extents outside of the region */
- if (nd_label->dpa < nd_mapping->start || nd_label->dpa > map_end)
- continue;
+ if (__le64_to_cpu(nd_label->dpa) < nd_mapping->start ||
+ __le64_to_cpu(nd_label->dpa) > map_end)
+ continue;
i = add_namespace_resource(nd_region, nd_label, devs, count);
if (i < 0)