Re: [Qemu-trivial] [PATCH] ide: cmd_exec_dev_diagnostic() always set error register to 0x01

[David du Colombier]

> This notably fix IDE CD probing on the Plan 9 operating system,
> which rely on the error register set by the Execute Device
> Diagnostic command to detect drive configurations.
> 
> Thanks to Rémi Pommarel for reporting this issue.
> 
> Signed-off-by: David du Colombier <address@hidden>
> ---
>  hw/ide/core.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/hw/ide/core.c b/hw/ide/core.c
> index e1f4c33..7783d58 100644
> --- a/hw/ide/core.c
> +++ b/hw/ide/core.c
> @@ -1321,6 +1321,7 @@ static bool cmd_exec_dev_diagnostic(IDEState
> *s, uint8_t cmd) s->status = 0; /* ATAPI spec (v6) section 9.10
> defines packet
>                          * devices to return a clear status register
>                          * with READY_STAT *not* set. */
> +        s->error = 0x01;
>      } else {
>          s->status = READY_STAT | SEEK_STAT;
>          /* The bits of the error register are not as usual for this
> command!

Ping.

-- 
David du Colombier