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authorAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>2019-08-09 09:47:26 +0200
committerDan Williams <dan.j.williams@intel.com>2019-09-24 19:23:44 +0200
commit86aa66687442ef45909ff9814b82b4d2bb892294 (patch)
treec79bb8c499fa10ea06cbc5865ebf6522ce5fcc4a /drivers/nvdimm
parentlibnvdimm/dax: Pick the right alignment default when creating dax devices (diff)
downloadlinux-86aa66687442ef45909ff9814b82b4d2bb892294.tar.xz
linux-86aa66687442ef45909ff9814b82b4d2bb892294.zip
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')
-rw-r--r--drivers/nvdimm/btt.c8
-rw-r--r--drivers/nvdimm/namespace_devs.c7
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index a8d56887ec88..3e9f45aec8d1 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -392,9 +392,9 @@ static int btt_flog_write(struct arena_info *arena, u32 lane, u32 sub,
arena->freelist[lane].sub = 1 - arena->freelist[lane].sub;
if (++(arena->freelist[lane].seq) == 4)
arena->freelist[lane].seq = 1;
- if (ent_e_flag(ent->old_map))
+ if (ent_e_flag(le32_to_cpu(ent->old_map)))
arena->freelist[lane].has_err = 1;
- arena->freelist[lane].block = le32_to_cpu(ent_lba(ent->old_map));
+ arena->freelist[lane].block = ent_lba(le32_to_cpu(ent->old_map));
return ret;
}
@@ -560,8 +560,8 @@ static int btt_freelist_init(struct arena_info *arena)
* FIXME: if error clearing fails during init, we want to make
* the BTT read-only
*/
- if (ent_e_flag(log_new.old_map) &&
- !ent_normal(log_new.old_map)) {
+ if (ent_e_flag(le32_to_cpu(log_new.old_map)) &&
+ !ent_normal(le32_to_cpu(log_new.old_map))) {
arena->freelist[i].has_err = 1;
ret = arena_clear_freelist_error(arena, i);
if (ret)
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)