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hw/block/fdc: Fix 'fallback' property on sysbus floppy disk controllers 

Setting the 'fallback' property corrupts the QOM instance state
(FDCtrlSysBus) because it accesses an incorrect offset (it uses
the offset of the FDCtrlISABus state).

Cc: qemu-stable@nongnu.org
Fixes: a73275dd6f ("fdc: Add fallback option")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210407133742.1680424-1-f4bug@amsat.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2021-04-07 15:37:42 +02:00 committed by Kevin Wolf
parent f940b0ac6f
commit da64789d3a
1 changed files with 2 additions and 2 deletions
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4
hw/block/fdc.c
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@ -2893,7 +2893,7 @@ static Property sysbus_fdc_properties[] = {
DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback,
DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_END_OF_LIST(),
@ -2918,7 +2918,7 @@ static Property sun4m_fdc_properties[] = {
DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback,
DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_END_OF_LIST(),