解决Android设备插入打印机无法启动

diff --git a/kernel/drivers/usb/class/usblp.c b/kernel/drivers/usb/cl
index 9eca405..b528437 100755
--- a/kernel/drivers/usb/class/usblp.c
+++ b/kernel/drivers/usb/class/usblp.c
@@ -1046,8 +1046,13 @@ static const struct file_operations usblp_fops
        .llseek =       noop_llseek,
 };
 
+static struct device_type printer_type = {
+       .name   = "printer",
+};
+
 static char *usblp_devnode(struct device *dev, mode_t *mode)
 {
+       dev->type=&printer_type;
        return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
 }
 
@@ -1072,6 +1077,7 @@ static ssize_t usblp_show_ieee1284_id(struct de
 
 static DEVICE_ATTR(ieee1284_id, S_IRUGO, usblp_show_ieee1284_id, NUL
 
+
 static int usblp_probe(struct usb_interface *intf,
                       const struct usb_device_id *id)
 {
@@ -1079,6 +1085,8 @@ static int usblp_probe(struct usb_interface *in
        struct usblp *usblp;
        int protocol;
        int retval;
+       //dev->children[0]->dev.type=&printer_type;
+       //dev->dev.type=&printer_type;
 
        /* Malloc and start initializing usblp structure so we can us
         * directly. */