usb: gadget: printer: define pnp string buffer length

Avoid using magic numbers.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/legacy/printer.c b/drivers/usb/gadget/legacy/printer.c
index 84e6cdd..db5e2f0 100644 (file)
--- a/drivers/usb/gadget/legacy/printer.c
+++ b/drivers/usb/gadget/legacy/printer.c
@@ -276,9 +276,11 @@ static inline struct usb_endpoint_descriptor *ep_desc(struct usb_gadget *gadget,
 
 /* descriptors that are built on-demand */
 
+#define PNP_STRING_LEN                 1024
+
 static char                            product_desc [40] = DRIVER_DESC;
 static char                            serial_num [40] = "1";
-static char                            pnp_string [1024] =
+static char                            pnp_string[PNP_STRING_LEN] =
        "XXMFG:linux;MDL:g_printer;CLS:PRINTER;SN:1;";
 
 /* static strings, in UTF-8 */
@@ -1247,7 +1249,7 @@ static int f_printer_bind_config(struct usb_configuration *c, char *pnp_str,
        INIT_LIST_HEAD(&dev->rx_buffers);
 
        if (pnp_str)
-               strlcpy(&pnp_string[2], pnp_str, sizeof(pnp_string) - 2);
+               strlcpy(&pnp_string[2], pnp_str, PNP_STRING_LEN - 2);
 
        len = strlen(pnp_string);
        pnp_string[0] = (len >> 8) & 0xFF;