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clk: composite: Fix 'switching' to same clock 

During commit 6594988fd6 ("clk: composite: Use rate_ops.determine_rate
when also a mux is available") setting req->best_parent_hw got lost,
so best_parent_hw stays NULL during switch to the same parent. This
results in the (debug) message:
  clk_calc_new_rates: lcdif_pixel not gated but wants to reparent
and the following rate change is dropped.

Fixes: 6594988fd6 ("clk: composite: Use rate_ops.determine_rate when also a mux is available")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20211103122441.3208576-1-alexander.stein@ew.tq-group.com
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Alexander Stein 2021-11-03 13:24:41 +01:00 committed by Stephen Boyd
parent 9af0cbeb47
commit c54ce35463
1 changed files with 1 additions and 0 deletions
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1
drivers/clk/clk-composite.c
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@ -97,6 +97,7 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
return ret;
req->rate = tmp_req.rate;
req->best_parent_hw = tmp_req.best_parent_hw;
req->best_parent_rate = tmp_req.best_parent_rate;
return 0;