[PATCH] usb: gadget: Add description for module parameter

[Wei Ming Chen]

The description for "qlen" is missing, and there is a description
for this parameter in "Documentation/usb/gadget_printer.rst"

Signed-off-by: Wei Ming Chen <jj251510319013@xxxxxxxxx>
---
 drivers/usb/gadget/legacy/printer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/gadget/legacy/printer.c b/drivers/usb/gadget/legacy/printer.c
index 2cd389575084..ed762ba9b629 100644
--- a/drivers/usb/gadget/legacy/printer.c
+++ b/drivers/usb/gadget/legacy/printer.c
@@ -50,6 +50,7 @@ MODULE_PARM_DESC(iPNPstring, "MFG:linux;MDL:g_printer;CLS:PRINTER;SN:1;");
 /* Number of requests to allocate per endpoint, not used for ep0. */
 static unsigned qlen = 10;
 module_param(qlen, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(qlen, "The number of 8k buffers to use per endpoint");
 
 #define QLEN	qlen
 
-- 
2.25.1