[qemu-xen staging] hw/block/fdc: Extract blk_create_empty_drive()

[patchbot@xxxxxxx]

commit 7629818574eb67d2a9eb5db313c935bcf1d4e557
Author:     Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
AuthorDate: Wed Nov 24 17:15:34 2021 +0100
Commit:     Michael Roth <michael.roth@xxxxxxx>
CommitDate: Tue Dec 14 15:04:59 2021 -0600

    hw/block/fdc: Extract blk_create_empty_drive()
    
    We are going to re-use this code in the next commit,
    so extract it as a new blk_create_empty_drive() function.
    
    Inspired-by: Hanna Reitz <hreitz@xxxxxxxxxx>
    Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
    Message-id: 20211124161536.631563-2-philmd@xxxxxxxxxx
    Signed-off-by: John Snow <jsnow@xxxxxxxxxx>
    (cherry picked from commit b154791e7b6d4ca5cdcd54443484d97360bd7ad2)
    Signed-off-by: Michael Roth <michael.roth@xxxxxxx>
---
 hw/block/fdc.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 9014cd30b3..c3e09973ca 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -61,6 +61,12 @@
     } while (0)
 
 
+/* Anonymous BlockBackend for empty drive */
+static BlockBackend *blk_create_empty_drive(void)
+{
+    return blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
+}
+
 /********************************************************/
 /* qdev floppy bus                                      */
 
@@ -486,8 +492,7 @@ static void floppy_drive_realize(DeviceState *qdev, Error 
**errp)
     }
 
     if (!dev->conf.blk) {
-        /* Anonymous BlockBackend for an empty drive */
-        dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
+        dev->conf.blk = blk_create_empty_drive();
         ret = blk_attach_dev(dev->conf.blk, qdev);
         assert(ret == 0);
 
--
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