X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fusb%2Fclass%2Fusblp.c;h=b6da40067c0e579bda5c0d098364b7256adaaa55;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=8836be09559eb7c806c6e2d4a1d9f4e944b4405d;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git

diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index 8836be095..b6da40067 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -75,6 +75,7 @@
 #define IOCNR_HP_SET_CHANNEL		4
 #define IOCNR_GET_BUS_ADDRESS		5
 #define IOCNR_GET_VID_PID		6
+#define IOCNR_SOFT_RESET		7
 /* Get device_id string: */
 #define LPIOC_GET_DEVICE_ID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, len)
 /* The following ioctls were added for http://hpoj.sourceforge.net: */
@@ -90,6 +91,8 @@
 #define LPIOC_GET_BUS_ADDRESS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_BUS_ADDRESS, len)
 /* Get two-int array: [0]=vendor ID, [1]=product ID: */
 #define LPIOC_GET_VID_PID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_VID_PID, len)
+/* Perform class specific soft reset */
+#define LPIOC_SOFT_RESET _IOC(_IOC_NONE, 'P', IOCNR_SOFT_RESET, 0);
 
 /*
  * A DEVICE_ID string may include the printer's serial number.
@@ -587,6 +590,13 @@ static int usblp_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 					usblp->minor, twoints[0], twoints[1]);
 				break;
 
+			case IOCNR_SOFT_RESET:
+				if (_IOC_DIR(cmd) != _IOC_NONE) {
+					retval = -EINVAL;
+					goto done;
+				}
+				retval = usblp_reset(usblp);
+				break;
 			default:
 				retval = -ENOTTY;
 		}
@@ -761,6 +771,7 @@ static ssize_t usblp_read(struct file *file, char __user *buffer, size_t count,
 			usblp->minor, usblp->readurb->status);
 		usblp->readurb->dev = usblp->dev;
  		usblp->readcount = 0;
+		usblp->rcomplete = 0;
 		if (usb_submit_urb(usblp->readurb, GFP_KERNEL) < 0)
 			dbg("error submitting urb");
 		count = -EIO;
@@ -840,7 +851,7 @@ static int usblp_probe(struct usb_interface *intf,
 		       const struct usb_device_id *id)
 {
 	struct usb_device *dev = interface_to_usbdev (intf);
-	struct usblp *usblp = 0;
+	struct usblp *usblp = NULL;
 	int protocol;
 	int retval;
 
@@ -1008,7 +1019,7 @@ static int usblp_select_alts(struct usblp *usblp)
 			continue;
 
 		/* Look for bulk OUT and IN endpoints. */
-		epwrite = epread = 0;
+		epwrite = epread = NULL;
 		for (e = 0; e < ifd->desc.bNumEndpoints; e++) {
 			epd = &ifd->endpoint[e].desc;