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-rw-r--r--hw/display/qxl.c5
-rw-r--r--hw/display/tc6393xb.c4
2 files changed, 8 insertions, 1 deletions
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 93b3518b21..b540dd656c 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -1591,6 +1591,11 @@ async_common:
             qxl_set_guest_bug(d,
                     "QXL_IO_UPDATE_AREA: invalid area (%ux%u)x(%ux%u)\n",
                     update.left, update.top, update.right, update.bottom);
+            if (update.left == update.right || update.top == update.bottom) {
+                /* old drivers may provide empty area, keep going */
+                qxl_clear_guest_bug(d);
+                goto cancel_async;
+            }
             break;
         }
         if (async == QXL_ASYNC) {
diff --git a/hw/display/tc6393xb.c b/hw/display/tc6393xb.c
index c19c055d7c..4306adc959 100644
--- a/hw/display/tc6393xb.c
+++ b/hw/display/tc6393xb.c
@@ -15,6 +15,7 @@
 #include "hw/block/flash.h"
 #include "ui/console.h"
 #include "ui/pixel_ops.h"
+#include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
 
 #define IRQ_TC6393_NAND		0
@@ -576,7 +577,8 @@ TC6393xbState *tc6393xb_init(MemoryRegion *sysmem, uint32_t base, qemu_irq irq)
     s->sub_irqs = qemu_allocate_irqs(tc6393xb_sub_irq, s, TC6393XB_NR_IRQS);
 
     nand = drive_get(IF_MTD, 0, 0);
-    s->flash = nand_init(nand ? nand->bdrv : NULL, NAND_MFR_TOSHIBA, 0x76);
+    s->flash = nand_init(nand ? blk_by_legacy_dinfo(nand) : NULL,
+                         NAND_MFR_TOSHIBA, 0x76);
 
     memory_region_init_io(&s->iomem, NULL, &tc6393xb_ops, s, "tc6393xb", 0x10000);
     memory_region_add_subregion(sysmem, base, &s->iomem);