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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>
This commit is contained in:
Patrick Delaunay 2016-12-08 18:10:49 +01:00 committed by Marek Vasut
parent 282b72082f
commit 8987012fe5
1 changed files with 9 additions and 1 deletions
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10
drivers/usb/gadget/f_dfu.c
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@ -654,7 +654,7 @@ static int dfu_prepare_function(struct f_dfu *f_dfu, int n)
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 @@ static int dfu_prepare_function(struct f_dfu *f_dfu, int n)
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;