usb: gadget: dfu: add functional descriptor in descriptor set
The "DFU descriptor set" must contain the "DFU functional descriptor"
but it is missing today in U-Boot code
(cf: DFU spec 1.1, chapter 4.2 DFU Mode Descriptor Set)
This patch only allocate buffer and copy DFU functional descriptor
after interfaces.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c
index 8e7c981..73b32f8 100644
--- a/drivers/usb/gadget/f_dfu.c
+++ b/drivers/usb/gadget/f_dfu.c
@@ -654,7 +654,7 @@
struct usb_interface_descriptor *d;
int i = 0;
- f_dfu->function = calloc(sizeof(struct usb_descriptor_header *), n + 1);
+ f_dfu->function = calloc(sizeof(struct usb_descriptor_header *), n + 2);
if (!f_dfu->function)
goto enomem;
@@ -673,6 +673,14 @@
f_dfu->function[i] = (struct usb_descriptor_header *)d;
}
+
+ /* add DFU Functional Descriptor */
+ f_dfu->function[i] = calloc(sizeof(dfu_func), 1);
+ if (!f_dfu->function[i])
+ goto enomem;
+ memcpy(f_dfu->function[i], &dfu_func, sizeof(dfu_func));
+
+ i++;
f_dfu->function[i] = NULL;
return 0;