memory: add parameter errp to memory_region_init_rom_device

Add parameter errp to memory_region_init_rom_device and update all call sites to propagate the error. Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> [Propagate the error out of realize. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
qemu · Sep 9, 2014 · 33e0eb5 · 33e0eb5
1 parent 4994653
commit 33e0eb5
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Showing 4 changed files with 20 additions and 5 deletions.
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
@@ -750,6 +750,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
     int ret;
     uint64_t blocks_per_device, device_len;
     int num_devices;
+    Error *local_err = NULL;
 
     total_len = pfl->sector_len * pfl->nb_blocs;
 
@@ -770,7 +771,12 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
     memory_region_init_rom_device(
         &pfl->mem, OBJECT(dev),
         pfl->be ? &pflash_cfi01_ops_be : &pflash_cfi01_ops_le, pfl,
-        pfl->name, total_len);
+        pfl->name, total_len, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
     vmstate_register_ram(&pfl->mem, DEVICE(pfl));
     pfl->storage = memory_region_get_ram_ptr(&pfl->mem);
     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &pfl->mem);

diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c
@@ -597,6 +597,7 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp)
     pflash_t *pfl = CFI_PFLASH02(dev);
     uint32_t chip_len;
     int ret;
+    Error *local_err = NULL;
 
     chip_len = pfl->sector_len * pfl->nb_blocs;
     /* XXX: to be fixed */
@@ -608,7 +609,12 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp)
 
     memory_region_init_rom_device(&pfl->orig_mem, OBJECT(pfl), pfl->be ?
                                   &pflash_cfi02_ops_be : &pflash_cfi02_ops_le,
-                                  pfl, pfl->name, chip_len);
+                                  pfl, pfl->name, chip_len, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
     vmstate_register_ram(&pfl->orig_mem, DEVICE(pfl));
     pfl->storage = memory_region_get_ram_ptr(&pfl->orig_mem);
     pfl->chip_len = chip_len;

diff --git a/include/exec/memory.h b/include/exec/memory.h
@@ -386,13 +386,15 @@ void memory_region_init_alias(MemoryRegion *mr,
  * @ops: callbacks for write access handling.
  * @name: the name of the region.
  * @size: size of the region.
+ * @errp: pointer to Error*, to store an error if it happens.
  */
 void memory_region_init_rom_device(MemoryRegion *mr,
                                    struct Object *owner,
                                    const MemoryRegionOps *ops,
                                    void *opaque,
                                    const char *name,
-                                   uint64_t size);
+                                   uint64_t size,
+                                   Error **errp);
 
 /**
  * memory_region_init_reservation: Initialize a memory region that reserves

diff --git a/memory.c b/memory.c
@@ -1204,15 +1204,16 @@ void memory_region_init_rom_device(MemoryRegion *mr,
                                    const MemoryRegionOps *ops,
                                    void *opaque,
                                    const char *name,
-                                   uint64_t size)
+                                   uint64_t size,
+                                   Error **errp)
 {
     memory_region_init(mr, owner, name, size);
     mr->ops = ops;
     mr->opaque = opaque;
     mr->terminates = true;
     mr->rom_device = true;
     mr->destructor = memory_region_destructor_rom_device;
-    mr->ram_addr = qemu_ram_alloc(size, mr, &error_abort);
+    mr->ram_addr = qemu_ram_alloc(size, mr, errp);
 }
 
 void memory_region_init_iommu(MemoryRegion *mr,