This patch (as964) was suggested by Steffen Koepf. It makes usb_get_descriptor() retry on all errors other than ETIMEDOUT, instead of only on EPIPE. This helps with some devices. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/message.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) Index: 2.6/drivers/usb/core/message.c =================================================================== --- 2.6.orig/drivers/usb/core/message.c +++ 2.6/drivers/usb/core/message.c @@ -608,12 +608,12 @@ int usb_get_descriptor(struct usb_device memset(buf,0,size); // Make sure we parse really received data for (i = 0; i < 3; ++i) { - /* retry on length 0 or stall; some devices are flakey */ + /* retry on length 0 or error; some devices are flakey */ result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, (type << 8) + index, 0, buf, size, USB_CTRL_GET_TIMEOUT); - if (result == 0 || result == -EPIPE) + if (result <= 0 && result != -ETIMEDOUT) continue; if (result > 1 && ((u8 *)buf)[1] != type) { result = -EPROTO; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/