[Qemu-trivial] [PATCH v2 2/2] qdev: Constify local variable returned by blk_bs

[Krzysztof Kozlowski <krzk@kernel.org>]

Inside qdev_prop_set_drive() the value returned by blk_bs() is passed
only as pointer to const to bdrv_get_node_name() and pointed values is
not modified in other places so this can be made const for code
safeness.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 hw/core/qdev-properties-system.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index c34be1c1bace..0d40ce682d05 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -405,7 +405,7 @@ void qdev_prop_set_drive(DeviceState *dev, const char *name,
     if (value) {
         ref = blk_name(value);
         if (!*ref) {
-            BlockDriverState *bs = blk_bs(value);
+            const BlockDriverState *bs = blk_bs(value);
             if (bs) {
                 ref = bdrv_get_node_name(bs);
             }
-- 
2.9.3