| Message ID | 99f1c7ff37b00d2f59fbce9d934abf23932363c5.1598956021.git.viresh.kumar@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | viresh kumar |
| Headers | show |
| Series | opp: Handle multiple calls for same OPP table in _of_add_opp_table_v1() | expand |
On 01-09-20, 15:57, Viresh Kumar wrote: > Until now for V1 OPP bindings we used to call > dev_pm_opp_of_cpumask_add_table() first and then > dev_pm_opp_set_sharing_cpus() in the cpufreq-dt driver. > > A later patch will though update the cpufreq-dt driver to optimize the > code a bit and we will call dev_pm_opp_set_sharing_cpus() first followed > by dev_pm_opp_of_cpumask_add_table(), which doesn't work well today as > it tries to re parse the OPP entries. This should work nevertheless for > V1 bindings as the same works for V2 bindings. > > Adapt the same approach from V2 bindings and fix this. > > Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> > Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> > --- > drivers/opp/of.c | 14 ++++++++++---- > 1 file changed, 10 insertions(+), 4 deletions(-) > > diff --git a/drivers/opp/of.c b/drivers/opp/of.c > index d8b623cc015a..6fc56660fa52 100644 > --- a/drivers/opp/of.c > +++ b/drivers/opp/of.c > @@ -886,6 +886,16 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) > const __be32 *val; > int nr, ret = 0; > > + mutex_lock(&opp_table->lock); > + if (opp_table->parsed_static_opps) { > + opp_table->parsed_static_opps++; > + mutex_unlock(&opp_table->lock); > + return 0; > + } > + > + opp_table->parsed_static_opps = 1; > + mutex_unlock(&opp_table->lock); > + > prop = of_find_property(dev->of_node, "operating-points", NULL); > if (!prop) > return -ENODEV; > @@ -902,10 +912,6 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) > return -EINVAL; > } > > - mutex_lock(&opp_table->lock); > - opp_table->parsed_static_opps = 1; > - mutex_unlock(&opp_table->lock); > - > val = prop->value; > while (nr) { > unsigned long freq = be32_to_cpup(val++) * 1000; This wasn't enough. Merged this diff as well to this patch: drivers/opp/of.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/opp/of.c b/drivers/opp/of.c index e72753be7dc7..aa829a569825 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -916,10 +916,14 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) mutex_unlock(&opp_table->lock); prop = of_find_property(dev->of_node, "operating-points", NULL); - if (!prop) - return -ENODEV; - if (!prop->value) - return -ENODATA; + if (!prop) { + ret = -ENODEV; + goto remove_static_opp; + } + if (!prop->value) { + ret = -ENODATA; + goto remove_static_opp; + } /* * Each OPP is a set of tuples consisting of frequency and @@ -928,7 +932,8 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) nr = prop->length / sizeof(u32); if (nr % 2) { dev_err(dev, "%s: Invalid OPP table\n", __func__); - return -EINVAL; + ret = -EINVAL; + goto remove_static_opp; } val = prop->value; @@ -940,12 +945,14 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) if (ret) { dev_err(dev, "%s: Failed to add OPP %ld (%d)\n", __func__, freq, ret); - _opp_remove_all_static(opp_table); - return ret; + goto remove_static_opp; } nr -= 2; } +remove_static_opp: + _opp_remove_all_static(opp_table); + return ret; }
diff --git a/drivers/opp/of.c b/drivers/opp/of.c index d8b623cc015a..6fc56660fa52 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -886,6 +886,16 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) const __be32 *val; int nr, ret = 0; + mutex_lock(&opp_table->lock); + if (opp_table->parsed_static_opps) { + opp_table->parsed_static_opps++; + mutex_unlock(&opp_table->lock); + return 0; + } + + opp_table->parsed_static_opps = 1; + mutex_unlock(&opp_table->lock); + prop = of_find_property(dev->of_node, "operating-points", NULL); if (!prop) return -ENODEV; @@ -902,10 +912,6 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table) return -EINVAL; } - mutex_lock(&opp_table->lock); - opp_table->parsed_static_opps = 1; - mutex_unlock(&opp_table->lock); - val = prop->value; while (nr) { unsigned long freq = be32_to_cpup(val++) * 1000;