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authorMark Brown <broonie@kernel.org>2017-10-19 19:45:49 +0100
committerMark Brown <broonie@kernel.org>2017-10-19 19:45:49 +0100
commitc23fed1d9173bf85b0fca069c2f24771e2d4e546 (patch)
tree8c0cddaea87050ba51cc209a2332ac03e3e3fabc /drivers/nvdimm
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
parentf674bd281460451e8784f3bc917a650e8937a8ed (diff)
Merge branch 'linus-4.14-rc4-acp-prereq' of git://people.freedesktop.org/~agd5f/linux into asoc-amd
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r--drivers/nvdimm/namespace_devs.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index 1427a386a033..3e4d1e7998da 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -1417,6 +1417,15 @@ static int btt_claim_class(struct device *dev)
struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
struct nd_namespace_index *nsindex;
+ /*
+ * If any of the DIMMs do not support labels the only
+ * possible BTT format is v1.
+ */
+ if (!ndd) {
+ loop_bitmask = 0;
+ break;
+ }
+
nsindex = to_namespace_index(ndd, ndd->ns_current);
if (nsindex == NULL)
loop_bitmask |= 1;