clk: propagate round_rate for CLK_SET_RATE_PARENT case
Need to propagate round_rate call for the clk that has no .round_rate
operation but with flag CLK_SET_RATE_PARENT set.
For example, clk_mux is a clk with no .round_rate operation. However,
it could likely be in a clk_set_rate propagation path, saying it has
parent clk who has .round_rate and .set_rate operations.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 62ecac53..c6e8866 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -587,8 +587,12 @@
if (!clk)
return -EINVAL;
- if (!clk->ops->round_rate)
- return clk->rate;
+ if (!clk->ops->round_rate) {
+ if (clk->flags & CLK_SET_RATE_PARENT)
+ return __clk_round_rate(clk->parent, rate);
+ else
+ return clk->rate;
+ }
if (clk->parent)
parent_rate = clk->parent->rate;