[PATCH v2 3/5] hw/block/nvme: fix potential compilation error

[Klaus Jensen]

From: Gollu Appalanaidu <anaidu.gollu@samsung.com>

assert may be compiled to a noop and we could end up returning an
uninitialized status.

Fix this by always returning Internal Device Error as a fallback.

Note that, as pointed out by Philippe, per commit 262a69f4282 ("osdep.h:
Prohibit disabling assert() in supported builds") this shouldn't be
possible. But clean it up so we don't worry about it again.

Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
[k.jensen: split commit]
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
---
 hw/block/nvme.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index ddc83f7f7a19..dcd51a52951c 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1232,8 +1232,6 @@ static uint16_t nvme_check_zone_write(NvmeNamespace *ns, 
NvmeZone *zone,
 
 static uint16_t nvme_check_zone_state_for_read(NvmeZone *zone)
 {
-    uint16_t status;
-
     switch (nvme_get_zone_state(zone)) {
     case NVME_ZONE_STATE_EMPTY:
     case NVME_ZONE_STATE_IMPLICITLY_OPEN:
@@ -1241,16 +1239,14 @@ static uint16_t nvme_check_zone_state_for_read(NvmeZone 
*zone)
     case NVME_ZONE_STATE_FULL:
     case NVME_ZONE_STATE_CLOSED:
     case NVME_ZONE_STATE_READ_ONLY:
-        status = NVME_SUCCESS;
-        break;
+        return NVME_SUCCESS;
     case NVME_ZONE_STATE_OFFLINE:
-        status = NVME_ZONE_OFFLINE;
-        break;
+        return NVME_ZONE_OFFLINE;
     default:
         assert(false);
     }
 
-    return status;
+    return NVME_INTERNAL_DEV_ERROR;
 }
 
 static uint16_t nvme_check_zone_read(NvmeNamespace *ns, uint64_t slba,
-- 
2.30.1