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dfu:function: Fix number of allocated DFU function pointers

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This subtle change fix problem with too small amount of allocated
memory to store DFU function pointers.

One needs to allocate extra space for sentinel NULL pointer in this array
of function pointers.

With the previous code, the NULL value overwrites malloc internal data
and afterwards free(f_dfu->function) crashes.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
This commit is contained in:
Lukasz Majewski 2013-06-26 11:46:13 +02:00 committed by Marek Vasut
parent 7a34278542
commit e059a400ad
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/f_dfu.c
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@ -589,7 +589,7 @@ 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);
f_dfu->function = calloc(sizeof(struct usb_descriptor_header *), n + 1);
if (!f_dfu->function)
goto enomem;