usb: class: Use USB_CLASS_PRINTER instead of number 7

Kernel provides very nice defines for USB device class
so it's a good idea to use them in suitable places.
It is much easier to grep for such define instead of 7.

Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index f38e875a3fb19d10e00773607c3d37fb7dd28b8d..433bbc34a8a481ff15c8070e9917ecf1ec1455e8 100644 (file)
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -57,6 +57,7 @@
 #include <linux/mutex.h>
 #undef DEBUG
 #include <linux/usb.h>
+#include <linux/usb/ch9.h>
 #include <linux/ratelimit.h>
 
 /*
@@ -79,12 +80,20 @@
 #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: */
-/* Get two-int array:
- * [0]=current protocol (1=7/1/1, 2=7/1/2, 3=7/1/3),
- * [1]=supported protocol mask (mask&(1<<n)!=0 means 7/1/n supported): */
+/* The following ioctls were added for http://hpoj.sourceforge.net:
+ * Get two-int array:
+ * [0]=current protocol
+ *     (1=USB_CLASS_PRINTER/1/1, 2=USB_CLASS_PRINTER/1/2,
+ *         3=USB_CLASS_PRINTER/1/3),
+ * [1]=supported protocol mask (mask&(1<<n)!=0 means
+ *     USB_CLASS_PRINTER/1/n supported):
+ */
 #define LPIOC_GET_PROTOCOLS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_PROTOCOLS, len)
-/* Set protocol (arg: 1=7/1/1, 2=7/1/2, 3=7/1/3): */
+/*
+ * Set protocol
+ *     (arg: 1=USB_CLASS_PRINTER/1/1, 2=USB_CLASS_PRINTER/1/2,
+ *         3=USB_CLASS_PRINTER/1/3):
+ */
 #define LPIOC_SET_PROTOCOL _IOC(_IOC_WRITE, 'P', IOCNR_SET_PROTOCOL, 0)
 /* Set channel number (HP Vendor-specific command): */
 #define LPIOC_HP_SET_CHANNEL _IOC(_IOC_WRITE, 'P', IOCNR_HP_SET_CHANNEL, 0)
@@ -146,8 +155,10 @@ struct usblp {
        int                     readcount;              /* Counter for reads */
        int                     ifnum;                  /* Interface number */
        struct usb_interface    *intf;                  /* The interface */
-       /* Alternate-setting numbers and endpoints for each protocol
-        * (7/1/{index=1,2,3}) that the device supports: */
+       /*
+        * Alternate-setting numbers and endpoints for each protocol
+        * (USB_CLASS_PRINTER/1/{index=1,2,3}) that the device supports:
+        */
        struct {
                int                             alt_setting;
                struct usb_endpoint_descriptor  *epwrite;
@@ -1206,19 +1217,23 @@ abort_ret:
  * but our requirements are too intricate for simple match to handle.
  *
  * The "proto_bias" option may be used to specify the preferred protocol
- * for all USB printers (1=7/1/1, 2=7/1/2, 3=7/1/3).  If the device
- * supports the preferred protocol, then we bind to it.
+ * for all USB printers (1=USB_CLASS_PRINTER/1/1, 2=USB_CLASS_PRINTER/1/2,
+ * 3=USB_CLASS_PRINTER/1/3).  If the device supports the preferred protocol,
+ * then we bind to it.
  *
- * The best interface for us is 7/1/2, because it is compatible
- * with a stream of characters. If we find it, we bind to it.
+ * The best interface for us is USB_CLASS_PRINTER/1/2, because it
+ * is compatible with a stream of characters. If we find it, we bind to it.
  *
  * Note that the people from hpoj.sourceforge.net need to be able to
- * bind to 7/1/3 (MLC/1284.4), so we provide them ioctls for this purpose.
+ * bind to USB_CLASS_PRINTER/1/3 (MLC/1284.4), so we provide them ioctls
+ * for this purpose.
  *
- * Failing 7/1/2, we look for 7/1/3, even though it's probably not
- * stream-compatible, because this matches the behaviour of the old code.
+ * Failing USB_CLASS_PRINTER/1/2, we look for USB_CLASS_PRINTER/1/3,
+ * even though it's probably not stream-compatible, because this matches
+ * the behaviour of the old code.
  *
- * If nothing else, we bind to 7/1/1 - the unidirectional interface.
+ * If nothing else, we bind to USB_CLASS_PRINTER/1/1
+ * - the unidirectional interface.
  */
 static int usblp_select_alts(struct usblp *usblp)
 {
@@ -1236,7 +1251,8 @@ static int usblp_select_alts(struct usblp *usblp)
        for (i = 0; i < if_alt->num_altsetting; i++) {
                ifd = &if_alt->altsetting[i];
 
-               if (ifd->desc.bInterfaceClass != 7 || ifd->desc.bInterfaceSubClass != 1)
+               if (ifd->desc.bInterfaceClass != USB_CLASS_PRINTER ||
+                   ifd->desc.bInterfaceSubClass != 1)
                        if (!(usblp->quirks & USBLP_QUIRK_BAD_CLASS))
                                continue;
 
@@ -1262,8 +1278,10 @@ static int usblp_select_alts(struct usblp *usblp)
                if (!epwrite || (ifd->desc.bInterfaceProtocol > 1 && !epread))
                        continue;
 
-               /* Turn off reads for 7/1/1 (unidirectional) interfaces
-                * and buggy bidirectional printers. */
+               /*
+                * Turn off reads for USB_CLASS_PRINTER/1/1 (unidirectional)
+                * interfaces and buggy bidirectional printers.
+                */
                if (ifd->desc.bInterfaceProtocol == 1) {
                        epread = NULL;
                } else if (usblp->quirks & USBLP_QUIRK_BIDIR) {
@@ -1406,12 +1424,12 @@ static int usblp_resume(struct usb_interface *intf)
 }
 
 static const struct usb_device_id usblp_ids[] = {
-       { USB_DEVICE_INFO(7, 1, 1) },
-       { USB_DEVICE_INFO(7, 1, 2) },
-       { USB_DEVICE_INFO(7, 1, 3) },
-       { USB_INTERFACE_INFO(7, 1, 1) },
-       { USB_INTERFACE_INFO(7, 1, 2) },
-       { USB_INTERFACE_INFO(7, 1, 3) },
+       { USB_DEVICE_INFO(USB_CLASS_PRINTER, 1, 1) },
+       { USB_DEVICE_INFO(USB_CLASS_PRINTER, 1, 2) },
+       { USB_DEVICE_INFO(USB_CLASS_PRINTER, 1, 3) },
+       { USB_INTERFACE_INFO(USB_CLASS_PRINTER, 1, 1) },
+       { USB_INTERFACE_INFO(USB_CLASS_PRINTER, 1, 2) },
+       { USB_INTERFACE_INFO(USB_CLASS_PRINTER, 1, 3) },
        { USB_DEVICE(0x04b8, 0x0202) }, /* Seiko Epson Receipt Printer M129C */
        { }                                             /* Terminating entry */
 };