On Tue, Sep 23, 2014 at 08:19:41PM +1000, Alexey Kardashevskiy wrote:
> This adds a stub for ohci_td_pkt() function (which traces packets)
> when configured without --enable-trace-backend
> 
> Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
> ---
> 
> It should probably be squashed to
> [PATCH] ohci: Convert fprint/DPRINTF/print to traces
> 
> Sorry about that...
> 
> ---
>  hw/usb/hcd-ohci.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c
> index 4a4dd02..7ea871d 100644
> --- a/hw/usb/hcd-ohci.c
> +++ b/hw/usb/hcd-ohci.c
> @@ -920,6 +920,7 @@ static int ohci_service_iso_td(OHCIState *ohci, struct 
> ohci_ed *ed,
>      return 1;
>  }
>  
> +#ifdef trace_event_get_state
>  static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len)
>  {
>      bool print16 = !!trace_event_get_state(TRACE_USB_OHCI_TD_PKT_SHORT);

The preferred define for this is CONFIG_TRACE_NOP.

Checking for trace_event_get_state could break if trace/control.h
changes in the future.

Stefan

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