4.19-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 00a461cc32ec27fa7bd9c874a7b36b0c6c542c12 ]
Fix child-node lookup which by using the wrong OF helper was searching the whole tree depth-first, something which could end up matching an unrelated node.
Also fix the related node-reference leaks.
Fixes: 5b385a45e001 ("clk: ti: add support for clkctrl aliases") Signed-off-by: Johan Hovold johan@kernel.org Acked-by: Tero Kristo t-kristo@ti.com Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/ti/clk.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c index 7d22e1af2247..27e0979b3158 100644 --- a/drivers/clk/ti/clk.c +++ b/drivers/clk/ti/clk.c @@ -129,7 +129,7 @@ int ti_clk_setup_ll_ops(struct ti_clk_ll_ops *ops) void __init ti_dt_clocks_register(struct ti_dt_clk oclks[]) { struct ti_dt_clk *c; - struct device_node *node; + struct device_node *node, *parent; struct clk *clk; struct of_phandle_args clkspec; char buf[64]; @@ -164,8 +164,12 @@ void __init ti_dt_clocks_register(struct ti_dt_clk oclks[]) continue;
node = of_find_node_by_name(NULL, buf); - if (num_args) - node = of_find_node_by_name(node, "clk"); + if (num_args) { + parent = node; + node = of_get_child_by_name(parent, "clk"); + of_node_put(parent); + } + clkspec.np = node; clkspec.args_count = num_args; for (i = 0; i < num_args; i++) { @@ -173,11 +177,12 @@ void __init ti_dt_clocks_register(struct ti_dt_clk oclks[]) if (ret) { pr_warn("Bad tag in %s at %d: %s\n", c->node_name, i, tags[i]); + of_node_put(node); return; } } clk = of_clk_get_from_provider(&clkspec); - + of_node_put(node); if (!IS_ERR(clk)) { c->lk.clk = clk; clkdev_add(&c->lk);