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authorShawn Guo <shawn.guo@linaro.org>2012-04-12 20:50:19 +0800
committerMike Turquette <mturquette@linaro.org>2012-04-24 16:37:40 -0700
commitf4d8af2e5ae6294d5e2220d3963def6f7ffc0873 (patch)
tree7a7d8a03f1c73d7148167ebd9fc2fceb2f8496cc /drivers/clk
parent1c0035d710dd3bfa86d58f851b8737c7f11a9bbc (diff)
downloadop-kernel-dev-f4d8af2e5ae6294d5e2220d3963def6f7ffc0873.zip
op-kernel-dev-f4d8af2e5ae6294d5e2220d3963def6f7ffc0873.tar.gz
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>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/clk.c8
1 files changed, 6 insertions, 2 deletions
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 @@ unsigned long __clk_round_rate(struct clk *clk, unsigned long rate)
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;
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