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Re: [Qemu-block] [Qemu-devel] [PATCH] isa-fdc: assert replaced by proper


From: Markus Armbruster
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH] isa-fdc: assert replaced by proper error exit
Date: Fri, 01 Sep 2017 15:02:40 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Eduardo Otubo <address@hidden> writes:

> When not available, isa-fdc falls into assert instead of proper error
> exit. This patch fixes this behavior.

When what exactly isn't available?

>
> Signed-off-by: Eduardo Otubo <address@hidden>
> ---
>  hw/block/fdc.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/hw/block/fdc.c b/hw/block/fdc.c
> index 401129073b..0b6def4e1d 100644
> --- a/hw/block/fdc.c
> +++ b/hw/block/fdc.c
> @@ -2699,11 +2699,15 @@ static void isabus_fdc_realize(DeviceState *dev, 
> Error **errp)
>      fdctrl->dma_chann = isa->dma;
>      if (fdctrl->dma_chann != -1) {
>          fdctrl->dma = isa_get_dma(isa_bus_from_device(isadev), isa->dma);
> -        assert(fdctrl->dma);
> +        if (!fdctrl->dma) {
> +            error_setg(errp, "isa-fdc not supported");
> +            goto error;
> +        }
>      }
>  
>      qdev_set_legacy_instance_id(dev, isa->iobase, 2);
>      fdctrl_realize_common(dev, fdctrl, &err);
> +error:
>      if (err != NULL) {
>          error_propagate(errp, err);
>          return;

The actual patch makes me suspect it's "when ISA DMA isn't available".



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