[v9,1/2] usb/gadget: Constify usb_gadget_get_string "table" argument

Commit Message

Benjamin Herrenschmidt May 2, 2018, 6:33 a.m. UTC

The table is never modified by the function. This allows us
to use it on a statically defined table that is marked const.

Signed-off-by: Benjamin Herrenschmidt <[e-mail]>
---
 drivers/usb/gadget/usbstring.c | 2 +-
 include/linux/usb/gadget.h     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c
index 566ab261e8b7..7c24d1ce1088 100644
--- a/drivers/usb/gadget/usbstring.c
+++ b/drivers/usb/gadget/usbstring.c
@@ -33,7 +33,7 @@ 
  * characters (which are also widely used in C strings).
  */
 int
-usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf)
+usb_gadget_get_string (const struct usb_gadget_strings *table, int id, u8 *buf)
 {
 	struct usb_string	*s;
 	int			len;
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 847f423ad9b3..e5cd84a0f84a 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -763,7 +763,7 @@  struct usb_gadget_string_container {
 };
 
 /* put descriptor for string with that id into buf (buflen >= 256) */
-int usb_gadget_get_string(struct usb_gadget_strings *table, int id, u8 *buf);
+int usb_gadget_get_string(const struct usb_gadget_strings *table, int id, u8 *buf);
 
 /*-------------------------------------------------------------------------*/