[Qemu-devel] [PATCH] nvdimm: allow read/write zero-size namespace label

[Li Qiang]

From: Li Qiang <address@hidden>

The spec doesn't say the namespace label can't be zero
when read/write it. As this is no harmful, just allow
it.

Signed-off-by: Li Qiang <address@hidden>
---
 hw/mem/nvdimm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c
index db896b0..4042097 100644
--- a/hw/mem/nvdimm.c
+++ b/hw/mem/nvdimm.c
@@ -114,7 +114,7 @@ static void nvdimm_realize(PCDIMMDevice *dimm, Error **errp)
 static void nvdimm_validate_rw_label_data(NVDIMMDevice *nvdimm, uint64_t size,
                                         uint64_t offset)
 {
-    assert((nvdimm->label_size >= size + offset) && (offset + size > offset));
+    assert((nvdimm->label_size >= size + offset) && (offset + size >= offset));
 }
 
 static void nvdimm_read_label_data(NVDIMMDevice *nvdimm, void *buf,
-- 
1.8.3.1