From 4765218db79561ce13922806716eadb138c65439 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 15 Sep 2016 18:08:05 -0700 Subject: [PATCH] libnvdimm, namespace: debug invalid interleave-set-cookie values If platform firmware fails to populate unique / non-zero serial number data for each nvdimm in an interleave-set it may cause pmem region initialization to fail. Add a debug message for this case. Signed-off-by: Dan Williams --- drivers/nvdimm/namespace_devs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index 6b0449bd7720..4f0a21308417 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -1584,8 +1584,10 @@ static int find_pmem_label_set(struct nd_region *nd_region, int rc = -ENODEV, l; u16 i; - if (cookie == 0) + if (cookie == 0) { + dev_dbg(&nd_region->dev, "invalid interleave-set-cookie\n"); return -ENXIO; + } /* * Find a complete set of labels by uuid. By definition we can start