[Spice-devel] [PATCH spice-gtk 1/3] usb-backend: Cache isochronous value

[Frediano Ziglio]

ping the series

> 
> Allows to remove _SpiceUsbDevice structure.
> _SpiceUsbDevice is only caching this value from SpiceUsbBackendDevice.
> 
> Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
> ---
>  src/usb-backend.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/src/usb-backend.c b/src/usb-backend.c
> index 9ac8595c..7e0e4a8a 100644
> --- a/src/usb-backend.c
> +++ b/src/usb-backend.c
> @@ -50,6 +50,8 @@ struct _SpiceUsbBackendDevice
>      gint ref_count;
>      SpiceUsbBackendChannel *attached_to;
>      UsbDeviceInformation device_info;
> +    uint8_t cached_isochronous_valid : 1;
> +    uint8_t cached_isochronous : 1;
>  };
>  
>  struct _SpiceUsbBackend
> @@ -341,6 +343,10 @@ gboolean
> spice_usb_backend_device_isoch(SpiceUsbBackendDevice *dev)
>      gint i, j, k;
>      int rc;
>  
> +    if (dev->cached_isochronous_valid) {
> +        return dev->cached_isochronous;
> +    }
> +
>      g_return_val_if_fail(libdev != NULL, 0);
>  
>      rc = libusb_get_active_config_descriptor(libdev, &conf_desc);
> @@ -362,6 +368,9 @@ gboolean
> spice_usb_backend_device_isoch(SpiceUsbBackendDevice *dev)
>          }
>      }
>  
> +    dev->cached_isochronous_valid = TRUE;
> +    dev->cached_isochronous = isoc_found;
> +
>      libusb_free_config_descriptor(conf_desc);
>      return isoc_found;
>  }
> --
> 2.20.1
> 
>