[PATCH v3 6/7] m25p80: Introduce an helper to retrieve the BlockBackend of a device

[Cédric Le Goater]

It will help in getting rid of some drive_get(IF_MTD) calls by
retrieving the BlockBackend directly from the m25p80 device.

Cc: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/block/flash.h | 4 ++++
 hw/block/m25p80.c        | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/include/hw/block/flash.h b/include/hw/block/flash.h
index 7198953702b7..de93756cbe8f 100644
--- a/include/hw/block/flash.h
+++ b/include/hw/block/flash.h
@@ -76,4 +76,8 @@ uint8_t ecc_digest(ECCState *s, uint8_t sample);
 void ecc_reset(ECCState *s);
 extern const VMStateDescription vmstate_ecc_state;
 
+/* m25p80.c */
+
+BlockBackend *m25p80_get_blk(DeviceState *dev);
+
 #endif
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index dc5ffbc4ff52..afc3fdf4d60b 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -25,6 +25,7 @@
 #include "qemu/units.h"
 #include "sysemu/block-backend.h"
 #include "hw/block/block.h"
+#include "hw/block/flash.h"
 #include "hw/qdev-properties.h"
 #include "hw/qdev-properties-system.h"
 #include "hw/ssi/ssi.h"
@@ -1830,3 +1831,8 @@ static void m25p80_register_types(void)
 }
 
 type_init(m25p80_register_types)
+
+BlockBackend *m25p80_get_blk(DeviceState *dev)
+{
+    return M25P80(dev)->blk;
+}
-- 
2.41.0