6.11-stable review patch. If anyone has any objections, please let me know.
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From: Javier Carrasco javier.carrasco.cruz@gmail.com
commit 147359e23e5c9652ff8c5a98a51a7323bd51c94a upstream.
Device nodes accessed via of_get_compatible_child() require of_node_put() to be called when the node is no longer required to avoid leaving a reference to the node behind, leaking the resource.
In this case, the usage of 'tnode' is straightforward and there are no error paths, allowing for a single of_node_put() when 'tnode' is no longer required.
Cc: stable@vger.kernel.org Fixes: 29646ee33cc3 ("counter: stm32-timer-cnt: add checks on quadrature encoder capability") Signed-off-by: Javier Carrasco javier.carrasco.cruz@gmail.com Link: https://lore.kernel.org/r/20241027-stm32-timer-cnt-of_node_put-v1-1-ebd903cd... Signed-off-by: William Breathitt Gray wbg@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/counter/stm32-timer-cnt.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/counter/stm32-timer-cnt.c +++ b/drivers/counter/stm32-timer-cnt.c @@ -700,6 +700,7 @@ static int stm32_timer_cnt_probe_encoder }
ret = of_property_read_u32(tnode, "reg", &idx); + of_node_put(tnode); if (ret) { dev_err(dev, "Can't get index (%d)\n", ret); return ret;