[RFC PATCH 4/4] clk: Skip disabling clocks if they have consumers

From: Abel Vesa
Date: Thu Jul 07 2022 - 06:03:54 EST


If a clock has already consumers, it should be considered as used.
So clk_disable_unused should leave it as is.

Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
---
drivers/clk/clk.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index e412e83a6e28..6cce31ea4f72 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1228,6 +1228,9 @@ static void __init clk_unprepare_unused_subtree(struct clk_core *core)
hlist_for_each_entry(child, &core->children, child_node)
clk_unprepare_unused_subtree(child);

+ if (core->consumers_count)
+ return;
+
if (core->prepare_count)
return;

@@ -1259,6 +1262,9 @@ static void __init clk_disable_unused_subtree(struct clk_core *core)
hlist_for_each_entry(child, &core->children, child_node)
clk_disable_unused_subtree(child);

+ if (core->consumers_count)
+ return;
+
if (core->flags & CLK_OPS_PARENT_ENABLE)
clk_core_prepare_enable(core->parent);

--
2.34.3