Index: linux-2.6.27.8/drivers/usb/class/usblp.c
===================================================================
--- linux-2.6.27.8.orig/drivers/usb/class/usblp.c
+++ linux-2.6.27.8/drivers/usb/class/usblp.c
@@ -259,9 +259,13 @@ static int usblp_ctrl_msg(struct usblp *
 	  index = (usblp->ifnum<<8)|usblp->protocol[usblp->current_protocol].alt_setting;
 	}
 
+	printk(KERN_INFO "usblp%d: in usblp_ctrl_msg: executing usb_control_msg\n",
+		usblp->minor);
 	retval = usb_control_msg(usblp->dev,
 		dir ? usb_rcvctrlpipe(usblp->dev, 0) : usb_sndctrlpipe(usblp->dev, 0),
 		request, type | dir | recip, value, index, buf, len, USBLP_CTL_TIMEOUT);
+	printk(KERN_INFO "usblp%d: in usblp_ctrl_msg: finished executing usb_control_msg\n",
+		usblp->minor);
 	dbg("usblp_control_msg: rq: 0x%02x dir: %d recip: %d value: %d idx: %d len: %#x result: %d",
 		request, !!dir, recip, value, index, len, retval);
 	return retval < 0 ? retval : 0;
@@ -346,8 +350,14 @@ static int usblp_check_status(struct usb
 	unsigned char status, newerr = 0;
 	int error;
 
+	printk(KERN_INFO "usblp%d: in usblp_check_status: executing mutex_lock\n",
+		usblp->minor);
 	mutex_lock(&usblp->mut);
+	printk(KERN_INFO "usblp%d: in usblp_check_status: executing usblp_read_status\n",
+		usblp->minor);
 	if ((error = usblp_read_status(usblp, usblp->statusbuf)) < 0) {
+	printk(KERN_INFO "usblp%d: in usblp_check_status: executing mutex_unlock\n",
+		usblp->minor);
 		mutex_unlock(&usblp->mut);
 		if (printk_ratelimit())
 			printk(KERN_ERR
@@ -658,7 +668,11 @@ static long usblp_ioctl(struct file *fil
 		switch (cmd) {
 
 			case LPGETSTATUS:
+				printk(KERN_INFO "usblp%d: in usblp_ioctl: executing usblp_read_status\n",
+					usblp->minor);
 				if ((retval = usblp_read_status(usblp, usblp->statusbuf))) {
+				printk(KERN_INFO "usblp%d: in usblp_ioctl: finished executing usblp_read_status\n",
+					usblp->minor);
 					if (printk_ratelimit())
 						printk(KERN_ERR "usblp%d:"
 						    "failed reading printer status (%d)\n",
@@ -862,6 +876,8 @@ done:
  */
 static int usblp_wwait(struct usblp *usblp, int nonblock)
 {
+	printk(KERN_INFO "usblp%d: in usblp_wwait: starting execution of code\n",
+		usblp->minor);
 	DECLARE_WAITQUEUE(waita, current);
 	int rc;
 	int err = 0;
@@ -880,7 +896,11 @@ static int usblp_wwait(struct usblp *usb
 
 		if (usblp->flags & LP_ABORT) {
 			if (schedule_timeout(msecs_to_jiffies(5000)) == 0) {
+				printk(KERN_INFO "usblp%d: in usblp_wwait: executing usblp_check_status\n",
+					usblp->minor);
 				err = usblp_check_status(usblp, err);
+				printk(KERN_INFO "usblp%d: in usblp_wwait: finish executing usblp_check_status\n",
+					usblp->minor);
 				if (err == 1) {	/* Paper out */
 					rc = -ENOSPC;
 					break;