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Commit 9dec4892 authored by Dan Williams's avatar Dan Williams
Browse files

libnvdimm, btt: add btt startup debug 



Report the reason for btt probe failures when debug is enabled.

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 82595423

drivers/nvdimm/btt.c

+5 −1
Original line number Diff line number Diff line
@@ -1388,11 +1388,15 @@ int nvdimm_namespace_attach_btt(struct nd_namespace_common *ndns) 
	struct btt *btt;

	size_t rawsize;



	if (!nd_btt->uuid || !nd_btt->ndns || !nd_btt->lbasize)

	if (!nd_btt->uuid || !nd_btt->ndns || !nd_btt->lbasize) {

		dev_dbg(&nd_btt->dev, "incomplete btt configuration\n");

		return -ENODEV;

	}



	rawsize = nvdimm_namespace_capacity(ndns) - SZ_4K;

	if (rawsize < ARENA_MIN_SIZE) {

		dev_dbg(&nd_btt->dev, "%s must be at least %ld bytes\n",

				dev_name(&ndns->dev), ARENA_MIN_SIZE + SZ_4K);

		return -ENXIO;

	}

	nd_region = to_nd_region(nd_btt->dev.parent);