usb: handle NULL table in usb_gadget_get_string
Allow a NULL table to be passed to usb_gadget_get_string for cases
when a string table may not be populated.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Tom Rini <trini@ti.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c
index de5fa3f..8c3ff64 100644
--- a/drivers/usb/gadget/usbstring.c
+++ b/drivers/usb/gadget/usbstring.c
@@ -108,6 +108,9 @@
struct usb_string *s;
int len;
+ if (!table)
+ return -EINVAL;
+
/* descriptor 0 has the language id */
if (id == 0) {
buf[0] = 4;