Windows: Reduce severity of initial conf desc readout failures

* Failure to read the config descriptor through regular API calls can
  occur for some hubs (eg. 05E3:0608) and is of no major consequence.
* Later failures still reported with error severity as they may hide
  something more dramatic
* Issue reported by Jerry from NovaDSP

diff --git a/libusb/os/windows_usb.c b/libusb/os/windows_usb.c
index f29f84c..46f0730 100644 (file)
--- a/libusb/os/windows_usb.c
+++ b/libusb/os/windows_usb.c
@@ -901,15 +901,16 @@ static int cache_config_descriptors(struct libusb_device *dev, HANDLE hub_handle
                cd_buf_short.req.SetupPacket.wIndex = i;
                cd_buf_short.req.SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST));
 
-               // Dummy call to get the required data size
+               // Dummy call to get the required data size. Initial failures are reported as info rather
+               // than error as they can occur for non-penalizing situations, such as with some hubs.
                if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, &cd_buf_short, size,
                        &cd_buf_short, size, &ret_size, NULL)) {
-                       usbi_err(ctx, "could not access configuration descriptor (dummy) for '%s': %s", device_id, windows_error_str(0));
+                       usbi_info(ctx, "could not access configuration descriptor (dummy) for '%s': %s", device_id, windows_error_str(0));
                        LOOP_BREAK(LIBUSB_ERROR_IO);
                }
 
                if ((ret_size != size) || (cd_buf_short.data.wTotalLength < sizeof(USB_CONFIGURATION_DESCRIPTOR))) {
-                       usbi_err(ctx, "unexpected configuration descriptor size (dummy) for '%s'.", device_id);
+                       usbi_info(ctx, "unexpected configuration descriptor size (dummy) for '%s'.", device_id);
                        LOOP_BREAK(LIBUSB_ERROR_IO);
                }
 

diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index cd14787..5594f40 100644 (file)
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 10505
+#define LIBUSB_NANO 10506