[PATCH] clk: not calculate new rate for protected clks

From: Peng Fan (OSS)
Date: Mon May 31 2021 - 06:09:13 EST


From: Peng Fan <peng.fan@xxxxxxx>

If the protect_count of the parent clk is not 0, we not calculate new
rates for parent. Otherwise, the common clk framework may configure
other child clks that is under using.

Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
drivers/clk/clk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 65508eb89ec9..8ac121838e13 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2002,7 +2002,7 @@ static struct clk_core *clk_calc_new_rates(struct clk_core *core,
}

if ((core->flags & CLK_SET_RATE_PARENT) && parent &&
- best_parent_rate != parent->rate)
+ best_parent_rate != parent->rate && !clk_core_rate_is_protected(parent))
top = clk_calc_new_rates(parent, best_parent_rate);

out:
--
2.30.0