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hw/pci-bridge: pci_expander_bridge fix type in pxb_cxl_dev_reset()

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Reproduce issue with

configure --enable-qom-cast-debug ...

qemu-system-x86_64 -display none -machine q35,cxl=on -device pxb-cxl,bus=pcie.0

  hw/pci-bridge/pci_expander_bridge.c:54:PXB_DEV: Object 0x5570e0b1ada0 is not an instance of type pxb
  Aborted

The type conversion results in the right state structure, but PXB_DEV is
not a parent of PXB_CXL_DEV hence the error. Rather than directly
cleaning up the inheritance, this is the minimal fix which will be
followed by the cleanup.

Fixes: 154070eaf6 ("hw/pxb-cxl: Support passthrough HDM Decoders unless overridden")
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230420142750.6950-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jonathan Cameron 2023-04-20 15:27:49 +01:00 committed by Michael S. Tsirkin
parent 4d58309388
commit 9136f661c7
1 changed files with 1 additions and 1 deletions
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2
hw/pci-bridge/pci_expander_bridge.c
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@ -311,7 +311,7 @@ static void pxb_cxl_dev_reset(DeviceState *dev)
* The CXL specification allows for host bridges with no HDM decoders
* if they only have a single root port.
*/
if (!PXB_DEV(dev)->hdm_for_passthrough) {
if (!PXB_CXL_DEV(dev)->hdm_for_passthrough) {
dsp_count = pcie_count_ds_ports(hb->bus);
}
/* Initial reset will have 0 dsp so wait until > 0 */