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fdc: Fix fallback=auto error handling

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fdctrl_realize_common() rejects fallback=auto.  Used by devices
"isa-fdc", "sysbus-fdc", "SUNW,fdtwo".  The error handling is broken:

    $ qemu-system-x86_64 -nodefaults -device isa-fdc,fallback=auto,driveA=fd0 -drive if=none,id=fd0
    **
    ERROR:/work/armbru/qemu/hw/block/fdc.c:434:pick_drive_type: assertion failed: (drv->drive != FLOPPY_DRIVE_TYPE_AUTO)
    Aborted (core dumped)

Cause: fdctrl_realize_common() neglects to bail out after setting the
error.  Fix that.

Fixes: a73275dd6f
Cc: John Snow <jsnow@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200422130719.28225-7-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2020-04-22 15:07:11 +02:00
parent 0fbddcecf2
commit 07a978ef37
1 changed files with 1 additions and 0 deletions
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1
hw/block/fdc.c
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@ -2615,6 +2615,7 @@ static void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl,
if (fdctrl->fallback == FLOPPY_DRIVE_TYPE_AUTO) {
error_setg(errp, "Cannot choose a fallback FDrive type of 'auto'");
return;
}
/* Fill 'command_to_handler' lookup table */