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clk: Bail out when calculating phase fails during clk registration

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Bail out of clk registration if we fail to get the phase for a clk that
has a clk_ops::get_phase() callback. Print a warning too so that driver
authors can easily figure out that some clk is unable to read back phase
information at boot.

Cc: Douglas Anderson <dianders@chromium.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20200205232802.29184-5-sboyd@kernel.org
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
This commit is contained in:
Stephen Boyd 2020-02-05 15:28:02 -08:00
parent 0daa376d83
commit 2760878662
1 changed files with 6 additions and 1 deletions
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7
drivers/clk/clk.c
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@ -3457,7 +3457,12 @@ static int __clk_core_init(struct clk_core *core)
* Since a phase is by definition relative to its parent, just
* query the current clock phase, or just assume it's in phase.
*/
clk_core_get_phase(core);
ret = clk_core_get_phase(core);
if (ret < 0) {
pr_warn("%s: Failed to get phase for clk '%s'\n", __func__,
core->name);
goto out;
}
/*
* Set clk's duty cycle.