[Qemu-devel] [PATCH 2/6] qcow2: Return 0/-errno in write_l2_entries

[Kevin Wolf <kwolf@redhat.com>]

Change write_l2_entries to return the real error code instead of -1.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/qcow2-cluster.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 9b3d686..65b16db 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -627,12 +627,13 @@ static int write_l2_entries(BDRVQcowState *s, uint64_t *l2_table,
     int start_offset = (8 * l2_index) & ~511;
     int end_offset = (8 * (l2_index + num) + 511) & ~511;
     size_t len = end_offset - start_offset;
+    int ret;
 
     BLKDBG_EVENT(s->hd, BLKDBG_L2_UPDATE);
-    if (bdrv_pwrite(s->hd, l2_offset + start_offset, &l2_table[l2_start_index],
-        len) != len)
-    {
-        return -1;
+    ret = bdrv_pwrite(s->hd, l2_offset + start_offset,
+        &l2_table[l2_start_index], len);
+    if (ret < 0) {
+        return ret;
     }
 
     return 0;
-- 
1.6.6.1