x86/asm/memcpy_mcsafe: Return bytes remaining

[linux-2.6-microblaze.git] / drivers / nvdimm / claim.c

diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 3085227..2e96b34 100644 (file)
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -276,7 +276,8 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
        if (rw == READ) {
                if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align)))
                        return -EIO;
-               return memcpy_mcsafe(buf, nsio->addr + offset, size);
+               if (memcpy_mcsafe(buf, nsio->addr + offset, size) != 0)
+                       return -EIO;
        }
 
        if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) {