usb: gadget: push iSerialNumber into gadgets

This patch pushes the iSerialNumber module argument from composite into
each gadget. Once the user uses the module paramter, the string is
overwritten with the final value.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index f821a3ad475d..9d068a4be778 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -400,6 +400,7 @@ struct usb_composite_overwrite {
         u16     idVendor;
         u16     idProduct;
         u16     bcdDevice;
+        char    *serial_number;
 };
 #define USB_GADGET_COMPOSITE_OPTIONS()                                  \
         static struct usb_composite_overwrite coverwrite;               \
@@ -411,7 +412,11 @@ struct usb_composite_overwrite {
         MODULE_PARM_DESC(idProduct, "USB Product ID");                  \
                                                                         \
         module_param_named(bcdDevice, coverwrite.bcdDevice, ushort, S_IRUGO); \
-        MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)")
+        MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)");        \
+                                                                        \
+        module_param_named(iSerialNumber, coverwrite.serial_number, charp, \
+                        S_IRUGO); \
+        MODULE_PARM_DESC(iSerialNumber, "SerialNumber string")
 
 void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
                 struct usb_composite_overwrite *covr);