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hw/ide: Fix crash when plugging a piix3-ide device into the x-remote machine

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QEMU currently crashes when the user tries to do something like:

 qemu-system-x86_64 -M x-remote -device piix3-ide

This happens because the "isabus" variable is not initialized with
the x-remote machine yet. Add a proper check for this condition
and propagate the error to the caller, so we can fail there gracefully.

Message-Id: <20210416125256.2039734-1-thuth@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Thomas Huth 2021-04-16 14:52:56 +02:00
parent 283f0a05e2
commit 9405d87be2
5 changed files with 46 additions and 21 deletions
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2
include/hw/ide/internal.h
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@ -624,7 +624,7 @@ int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
int chs_trans, Error **errp);
void ide_init2(IDEBus *bus, qemu_irq irq);
void ide_exit(IDEState *s);
void ide_init_ioport(IDEBus *bus, ISADevice *isa, int iobase, int iobase2);
int ide_init_ioport(IDEBus *bus, ISADevice *isa, int iobase, int iobase2);
void ide_register_restart_cb(IDEBus *bus);
void ide_exec_cmd(IDEBus *bus, uint32_t val);