[PATCH v3 02/12] opp: Filter out OPPs based on availability of a required-OPP
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2021-01-18 00:56:51
Also in:
linux-pm, lkml
Subsystem:
operating performance points (opp), the rest · Maintainers:
Viresh Kumar, Nishanth Menon, Stephen Boyd, Linus Torvalds
A required OPP may not be available, and thus, all OPPs which are using this required OPP should be unavailable too. Tested-by: Peter Geis <redacted> Tested-by: Nicolas Chauvet <redacted> Tested-by: Matt Merhar <redacted> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/opp/core.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 48618ff3e99e..7b4d07279638 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c@@ -1522,6 +1522,7 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, bool rate_not_available) { struct list_head *head; + unsigned int i; int ret; mutex_lock(&opp_table->lock);
@@ -1547,6 +1548,16 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, __func__, new_opp->rate); } + for (i = 0; i < opp_table->required_opp_count; i++) { + if (new_opp->required_opps[i]->available) + continue; + + new_opp->available = false; + dev_warn(dev, "%s: OPP not supported by required OPP %pOF (%lu)\n", + __func__, new_opp->required_opps[i]->np, new_opp->rate); + break; + } + return 0; }
--
2.29.2