Commit 44bfb43f authored by Stephen Warren's avatar Stephen Warren Committed by Tom Rini
Browse files

usb: gadget: don't leak configs when unbinding



By the time g_dnl_unbind() is run, cdev->config has been set to NULL,
so the free() there does nothing, and the config struct is leaked.
Equally, struct usb_gadget contains a linked list of config structs, so
the code should iterate over them all and free each one, rather than
freeing one particular config struct.

composite_unbind() already iterates over the list of config structs, and
unlinks each from the linked list. Fix this loop to free() each struct as
it's unlinked and otherwise forgotten.
Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
Acked-by: default avatarLukasz Majewski <l.majewski@samsung.com>
Tested-by: default avatarLukasz Majewski <l.majewski@samsung.com>
parent 0a04ed86
......@@ -948,6 +948,7 @@ static void composite_unbind(struct usb_gadget *gadget)
debug("unbind config '%s'/%p\n", c->label, c);
c->unbind(c);
}
free(c);
}
if (composite->unbind)
composite->unbind(cdev);
......
......@@ -93,8 +93,6 @@ static int g_dnl_unbind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
free(cdev->config);
cdev->config = NULL;
debug("%s: calling usb_gadget_disconnect for "
"controller '%s'\n", __func__, gadget->name);
usb_gadget_disconnect(gadget);
......
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