clk: clk_set_rate() must fail if CLK_SET_RATE_GATE is set and clk is enabled
This is well documented but isn't implemented. clk_set_rate() must check if
flags have CLK_SET_RATE_GATE bit set and is enabled too.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index c81803b..8149764 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -900,6 +900,11 @@
if (rate == clk->rate)
goto out;
+ if ((clk->flags & CLK_SET_RATE_GATE) && __clk_is_enabled(clk)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
/* calculate new rates and get the topmost changed clock */
top = clk_calc_new_rates(clk, rate);
if (!top) {