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hw/dma/xlnx_csu_dma: Run trivial checks early in realize()

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If some property are not set, we'll return indicating a failure,
so it is pointless to allocate / initialize some fields too early.
Move the trivial checks earlier in realize().

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210819163422.2863447-3-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2021-08-19 18:34:20 +02:00 committed by Peter Maydell
parent 34a3a71db6
commit 348ba7bede
1 changed files with 5 additions and 5 deletions
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10
hw/dma/xlnx_csu_dma.c
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@ -626,6 +626,11 @@ static void xlnx_csu_dma_realize(DeviceState *dev, Error **errp)
XlnxCSUDMA *s = XLNX_CSU_DMA(dev);
RegisterInfoArray *reg_array;
if (!s->is_dst && !s->tx_dev) {
error_setg(errp, "zynqmp.csu-dma: Stream not connected");
return;
}
reg_array =
register_init_block32(dev, xlnx_csu_dma_regs_info[!!s->is_dst],
XLNX_CSU_DMA_R_MAX,
@ -640,11 +645,6 @@ static void xlnx_csu_dma_realize(DeviceState *dev, Error **errp)
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);
sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq);
if (!s->is_dst && !s->tx_dev) {
error_setg(errp, "zynqmp.csu-dma: Stream not connected");
return;
}
s->src_timer = ptimer_init(xlnx_csu_dma_src_timeout_hit,
s, PTIMER_POLICY_DEFAULT);