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nvme: fix visibility of "uuid" ns attribute

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"uuid" must be invisible if both ns->uuid and ns->nguid are unset,
not if either one is.

Fixes: d934f9848a "nvme: provide UUID value to userspace"
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Martin Wilck 2017-09-28 21:33:23 +02:00 committed by Christoph Hellwig
parent a5f3d8a5ea
commit 007a61ae2f
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/host/core.c
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@ -2136,7 +2136,7 @@ static umode_t nvme_ns_attrs_are_visible(struct kobject *kobj,
struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
if (a == &dev_attr_uuid.attr) {
if (uuid_is_null(&ns->uuid) ||
if (uuid_is_null(&ns->uuid) &&
!memchr_inv(ns->nguid, 0, sizeof(ns->nguid)))
return 0;
}