From dc4310d9d45e72360b8fdf46d514b6d29c92e808 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Sat, 2 Apr 2022 13:52:55 +0200 Subject: [PATCH] clk: Switch from __clk_determine_rate to clk_core_round_rate_nolock clk_mux_determine_rate_flags() will call into __clk_determine_rate() with a clk_hw pointer, while it has access to the clk_core pointer already. This leads to back and forth between clk_hw and clk_core, while __clk_determine_rate will only call clk_core_round_rate_nolock() with the clk_core pointer it retrieved from the clk_hw. Let's simplify things a bit by calling into clk_core_round_rate_nolock directly. Tested-by: Alexander Stein # imx8mp Tested-by: Marek Szyprowski # exynos4210, meson g12b Signed-off-by: Maxime Ripard --- drivers/clk/clk.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -553,6 +553,9 @@ static bool mux_is_better_rate(unsigned return now <= rate && now > best; } +static int clk_core_round_rate_nolock(struct clk_core *core, + struct clk_rate_request *req); + int clk_mux_determine_rate_flags(struct clk_hw *hw, struct clk_rate_request *req, unsigned long flags) @@ -566,8 +569,12 @@ int clk_mux_determine_rate_flags(struct if (core->flags & CLK_SET_RATE_NO_REPARENT) { parent = core->parent; if (core->flags & CLK_SET_RATE_PARENT) { - ret = __clk_determine_rate(parent ? parent->hw : NULL, - &parent_req); + if (!parent) { + req->rate = 0; + return 0; + } + + ret = clk_core_round_rate_nolock(parent, &parent_req); if (ret) return ret; @@ -590,7 +597,7 @@ int clk_mux_determine_rate_flags(struct if (core->flags & CLK_SET_RATE_PARENT) { parent_req = *req; - ret = __clk_determine_rate(parent->hw, &parent_req); + ret = clk_core_round_rate_nolock(parent, &parent_req); if (ret) continue; } else {