Author: Nicolas Palix <npalix@diku.dk> of_node_put is needed before discarding a value received from of_find_node_by_name, eg in error handling code or when the device node is no longer used. The semantic match that catches the bug is as follows: (http://www.emn.fr/x-info/coccinelle/) // @r exists@ local idexpression struct device_node *n; position p1, p2; statement S1,S2; expression E,E1; expression …
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