[Qemu-devel] [PULL 05/30] block/get_block_status: set *pnum = 0 on error

[Kevin Wolf]

From: Peter Lieven <address@hidden>

if the call is invoked through bdrv_is_allocated the caller might
expect *pnum = 0 on error. however, a new implementation of
bdrv_get_block_status might only return a negative exit value on
error while keeping *pnum untouched.

Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Peter Lieven <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
 block.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block.c b/block.c
index b383b72..9b444b3 100644
--- a/block.c
+++ b/block.c
@@ -3162,6 +3162,7 @@ static int64_t coroutine_fn 
bdrv_co_get_block_status(BlockDriverState *bs,
 
     ret = bs->drv->bdrv_co_get_block_status(bs, sector_num, nb_sectors, pnum);
     if (ret < 0) {
+        *pnum = 0;
         return ret;
     }
 
-- 
1.8.1.4