ahci.c: Don't assume AHCIState's parent is AHCIPCIState

The AHCIState struct can either have AHCIPCIState or SysbusAHCIState
as a parent. The ahci_irq_lower() and ahci_irq_raise() functions
assume that it is always AHCIPCIState, which is not always the
case, which causes a seg fault. Verify what the container of AHCIState
is before setting the PCIDevice struct.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Acked-by: John Snow <jsnow@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/hw/ide/ahci.h b/hw/ide/ahci.h
index c055d6ba6b..c9b3805415 100644
--- a/hw/ide/ahci.h
+++ b/hw/ide/ahci.h
@@ -287,6 +287,8 @@ struct AHCIDevice {
 };
 
 typedef struct AHCIState {
+    DeviceState *container;
+
     AHCIDevice *dev;
     AHCIControlRegs control_regs;
     MemoryRegion mem;