Re: [Qemu-devel] [PATCH 2/4] ide/atapi: blk_aio_readv may return NULL

[Stefan Hajnoczi <stefanha@gmail.com>]

On Mon, Oct 12, 2015 at 02:27:23PM +0200, Peter Lieven wrote:
> Signed-off-by: Peter Lieven <pl@kamp.de>
> ---
>  hw/ide/atapi.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
> index 2271ea2..e0cf066 100644
> --- a/hw/ide/atapi.c
> +++ b/hw/ide/atapi.c
> @@ -429,6 +429,10 @@ static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
>      s->bus->dma->aiocb = blk_aio_readv(s->blk, (int64_t)s->lba << 2,
>                                         &s->bus->dma->qiov, n * 4,
>                                         ide_atapi_cmd_read_dma_cb, s);
> +    if (s->bus->dma->aiocb == NULL) {
> +        ide_atapi_io_error(s, -EIO);
> +        goto eot;
> +    }

Where does blk_aio_readv() return NULL?