[PATCH v2 02/21] hw/block: Pass DeviceState to pflash_cfi01_get_blk()

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

The point of a getter() function is to not expose the structure
internal fields. Otherwise callers could simply access the
PFlashCFI01::blk field.

Have the callers pass a DeviceState* argument. The QOM
type check is done in the callee.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 hw/arm/sbsa-ref.c        | 2 +-
 hw/arm/virt.c            | 2 +-
 hw/block/pflash_cfi01.c  | 4 +++-
 hw/i386/pc_sysfw.c       | 4 ++--
 include/hw/block/flash.h | 2 +-
 5 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index 4bb444684f..65b9acba04 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -346,7 +346,7 @@ static bool sbsa_firmware_init(SBSAMachineState *sms,
 
     sbsa_flash_map(sms, sysmem, secure_sysmem);
 
-    pflash_blk0 = pflash_cfi01_get_blk(sms->flash[0]);
+    pflash_blk0 = pflash_cfi01_get_blk(DEVICE(sms->flash[0]));
 
     bios_name = MACHINE(sms)->firmware;
     if (bios_name) {
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index ea2413a0ba..954e3ca5ce 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1233,7 +1233,7 @@ static bool virt_firmware_init(VirtMachineState *vms,
 
     virt_flash_map(vms, sysmem, secure_sysmem);
 
-    pflash_blk0 = pflash_cfi01_get_blk(vms->flash[0]);
+    pflash_blk0 = pflash_cfi01_get_blk(DEVICE(vms->flash[0]));
 
     bios_name = MACHINE(vms)->firmware;
     if (bios_name) {
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index 0cbc2fb4cb..458c50ec45 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -984,8 +984,10 @@ PFlashCFI01 *pflash_cfi01_register(hwaddr base,
     return PFLASH_CFI01(dev);
 }
 
-BlockBackend *pflash_cfi01_get_blk(PFlashCFI01 *fl)
+BlockBackend *pflash_cfi01_get_blk(DeviceState *dev)
 {
+    PFlashCFI01 *fl = PFLASH_CFI01(dev);
+
     return fl->blk;
 }
 
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index c8d9e71b88..4b85c48ec8 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -152,7 +152,7 @@ static void pc_system_flash_map(PCMachineState *pcms,
 
     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {
         system_flash = pcms->flash[i];
-        blk = pflash_cfi01_get_blk(system_flash);
+        blk = pflash_cfi01_get_blk(DEVICE(system_flash));
         if (!blk) {
             break;
         }
@@ -216,7 +216,7 @@ void pc_system_firmware_init(PCMachineState *pcms,
     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {
         pflash_cfi01_legacy_drive(pcms->flash[i],
                                   drive_get(IF_PFLASH, 0, i));
-        pflash_blk[i] = pflash_cfi01_get_blk(pcms->flash[i]);
+        pflash_blk[i] = pflash_cfi01_get_blk(DEVICE(pcms->flash[i]));
     }
 
     /* Reject gaps */
diff --git a/include/hw/block/flash.h b/include/hw/block/flash.h
index 86d8363bb0..961b6e9f74 100644
--- a/include/hw/block/flash.h
+++ b/include/hw/block/flash.h
@@ -21,7 +21,7 @@ PFlashCFI01 *pflash_cfi01_register(hwaddr base,
                                    uint16_t id0, uint16_t id1,
                                    uint16_t id2, uint16_t id3,
                                    int be);
-BlockBackend *pflash_cfi01_get_blk(PFlashCFI01 *fl);
+BlockBackend *pflash_cfi01_get_blk(DeviceState *dev);
 MemoryRegion *pflash_cfi01_get_memory(PFlashCFI01 *fl);
 void pflash_cfi01_legacy_drive(PFlashCFI01 *dev, DriveInfo *dinfo);
 
-- 
2.38.1