Re: [Qemu-devel] [PATCH 1/3] ide: don't loose pending dma state

[Paolo Bonzini]

On 24/03/2016 10:24, Pavel Butsykin wrote:
>> For extra points, make ide_handle_rw_error convert IDE_DMA_* to
>> IDE_RETRY_* so that the callers only need to pass in IDE_RETRY_DMA
>>
> You mean to do something like that:
> 
> ide_handle_rw_error(s, -ret, s->dma_cmd | IDE_RETRY_DMA)

Just ide_handle_rw_error(s, -ret, IDE_RETRY_DMA)

and in ide_handle_rw_error

    if (op == IDE_RETRY_DMA) {
        if (s->dma_cmd == IDE_DMA_READ)
            op |= IDE_RETRY_READ;
        else if (s->dma_cmd == IDE_DMA_TRIM)
            op |= IDE_RETRY_TRIM;
    }

But I'm not sure anymore this is a good idea.

However, if it works, using dma_cmd would be better than using the dma_cb.

Paolo