[Spice-devel] [PATCH spice-gtk 1/3] usb-backend: Cache isochronous value
Frediano Ziglio
fziglio at redhat.com
Thu Jul 25 13:43:51 UTC 2019
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
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