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authorJulia Lawall <julia@diku.dk>2010-08-31 17:48:55 +0200
committerKumar Gala <galak@kernel.crashing.org>2011-03-15 13:48:16 -0500
commit48a10cdfc0262ee7b5ccd4cbb673957e320ec563 (patch)
tree0b329e6f0d40b997c74c32531a425c9f4906d18d /arch
parentafc0a07d4a283599ac3a6a31d7454e9baaeccca0 (diff)
drivers/serial/ucc_uart.c: Add of_node_put to avoid memory leak
Add a call to of_node_put in the error handling code following a call to of_find_compatible_node or of_find_node_by_type. This patch also substantially reorganizes the error handling code in the function, to that it is possible first to jump to code that frees qe_port and then to jump to code that also puts np. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ local idexpression x; expression E,E1,E2; statement S; @@ *x = (of_find_node_by_path |of_find_node_by_name |of_find_node_by_phandle |of_get_parent |of_get_next_parent |of_get_next_child |of_find_compatible_node |of_match_node |of_find_node_by_type |of_find_node_with_property |of_find_matching_node |of_parse_phandle )(...); ... if (x == NULL) S <... when != x = E *if (...) { ... when != of_node_put(x) when != if (...) { ... of_node_put(x); ... } ( return <+...x...+>; | * return ...; ) } ...> ( E2 = x; | of_node_put(x); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Timur Tabi <timur@freescale.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions