Fix adding OPP entries in a wrong (opposite) order if OPP rate is
unavailable. The OPP comparison is erroneously skipped if OPP rate is
missing, thus OPPs are left unsorted.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/opp/core.c | 23 ++++++++++++-----------
drivers/opp/opp.h | 2 +-
2 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 34f7e530d941..5c7f130a8de2 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1531,9 +1531,10 @@ static bool _opp_supported_by_regulators(struct dev_pm_opp *opp,
return true;
}
-int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2)
+int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2,
+ bool rate_not_available)
{
- if (opp1->rate != opp2->rate)
+ if (!rate_not_available && opp1->rate != opp2->rate)
return opp1->rate < opp2->rate ? -1 : 1;
if (opp1->bandwidth && opp2->bandwidth &&
opp1->bandwidth[0].peak != opp2->bandwidth[0].peak)
@@ -1545,7 +1546,8 @@ int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2)
static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp,
struct opp_table *opp_table,
- struct list_head **head)
+ struct list_head **head,
+ bool rate_not_available)
{
struct dev_pm_opp *opp;
int opp_cmp;
@@ -1559,13 +1561,13 @@ static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp,
* loop.
*/
list_for_each_entry(opp, &opp_table->opp_list, node) {
- opp_cmp = _opp_compare_key(new_opp, opp);
+ opp_cmp = _opp_compare_key(new_opp, opp, rate_not_available);
if (opp_cmp > 0) {
*head = &opp->node;
continue;
}
- if (opp_cmp < 0)
+ if (opp_cmp < 0 || rate_not_available)
return 0;
/* Duplicate OPPs */
@@ -1601,12 +1603,11 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
mutex_lock(&opp_table->lock);
head = &opp_table->opp_list;
- if (likely(!rate_not_available)) {
- ret = _opp_is_duplicate(dev, new_opp, opp_table, &head);
- if (ret) {
- mutex_unlock(&opp_table->lock);
- return ret;
- }
+ ret = _opp_is_duplicate(dev, new_opp, opp_table, &head,
+ rate_not_available);
+ if (ret) {
+ mutex_unlock(&opp_table->lock);
+ return ret;
}
list_add(&new_opp->node, head);
diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h
index 4ced7ffa8158..6f5be6c72f13 100644
--- a/drivers/opp/opp.h
+++ b/drivers/opp/opp.h
@@ -219,7 +219,7 @@ struct opp_table *_find_opp_table(struct device *dev);
struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table);
struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table);
void _opp_free(struct dev_pm_opp *opp);
-int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2);
+int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2, bool rate_not_available);
int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, bool rate_not_available);
int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic);
void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu);
--
2.29.2
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