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authorMike Turquette <mturquette@linaro.org>2014-07-03 03:58:14 +0400
committerMike Turquette <mturquette@linaro.org>2014-07-13 23:17:05 +0400
commit5a994e151f7c54a5fdeb07fe2fed4ed64b9321b8 (patch)
tree59575205b146557cf837264c80dfbdb9a7978fc7 /drivers/clk/clk-composite.c
parent0c02cf2f1c2ffd75221b43bacb4f02a0e52e014b (diff)
downloadlinux-5a994e151f7c54a5fdeb07fe2fed4ed64b9321b8.tar.xz
clk: composite: improve rate_hw sanity check logic
The function pointer population and sanity checking logic got a bit ugly with the advent of the .determine_rate callback. Clean it up. Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/clk-composite.c')
-rw-r--r--drivers/clk/clk-composite.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c
index faf7c32fe351..b9355daf8065 100644
--- a/drivers/clk/clk-composite.c
+++ b/drivers/clk/clk-composite.c
@@ -226,21 +226,27 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
clk = ERR_PTR(-EINVAL);
goto err;
}
+ clk_composite_ops->recalc_rate = clk_composite_recalc_rate;
- /* .round_rate is a prerequisite for .set_rate */
- if (rate_ops->round_rate) {
- clk_composite_ops->round_rate = clk_composite_round_rate;
- if (rate_ops->set_rate) {
- clk_composite_ops->set_rate = clk_composite_set_rate;
- }
+ if (rate_ops->determine_rate)
+ clk_composite_ops->determine_rate =
+ clk_composite_determine_rate;
+ else if (rate_ops->round_rate)
+ clk_composite_ops->round_rate =
+ clk_composite_round_rate;
+
+ /* .set_rate requires either .round_rate or .determine_rate */
+ if (rate_ops->set_rate) {
+ if (rate_ops->determine_rate || rate_ops->round_rate)
+ clk_composite_ops->set_rate =
+ clk_composite_set_rate;
+ else
+ WARN(1, "%s: missing round_rate op is required\n",
+ __func__);
}
composite->rate_hw = rate_hw;
composite->rate_ops = rate_ops;
- clk_composite_ops->recalc_rate = clk_composite_recalc_rate;
- if (rate_ops->determine_rate ||
- (rate_ops->round_rate && clk_composite_ops->set_parent))
- clk_composite_ops->determine_rate = clk_composite_determine_rate;
}
if (gate_hw && gate_ops) {