From: Erico Nunes nunes.erico@gmail.com
[ Upstream commit e17a025a47c66ca8499ae88d8046c4f0d7c9c057 ]
Commit d8c32d3971e4 ("drm/lima: Migrate to dev_pm_opp_set_config()") introduced a regression as it may undo the clk_names setting in case the optional regulator is missing. This resulted in test and performance regressions with lima.
Restore the old behavior where clk_names is set separately so it is not undone in case of a missing optional regulator.
Fixes: d8c32d3971e4 ("drm/lima: Migrate to dev_pm_opp_set_config()") Acked-by: Viresh Kumar viresh.kumar@linaro.org Signed-off-by: Erico Nunes nunes.erico@gmail.com Signed-off-by: Qiang Yu yuq825@gmail.com Link: https://patchwork.freedesktop.org/patch/msgid/20221027073200.3885839-1-nunes... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/lima/lima_devfreq.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/lima/lima_devfreq.c b/drivers/gpu/drm/lima/lima_devfreq.c index 011be7ff51e1..bc8fb4e38d0a 100644 --- a/drivers/gpu/drm/lima/lima_devfreq.c +++ b/drivers/gpu/drm/lima/lima_devfreq.c @@ -112,11 +112,6 @@ int lima_devfreq_init(struct lima_device *ldev) unsigned long cur_freq; int ret; const char *regulator_names[] = { "mali", NULL }; - const char *clk_names[] = { "core", NULL }; - struct dev_pm_opp_config config = { - .regulator_names = regulator_names, - .clk_names = clk_names, - };
if (!device_property_present(dev, "operating-points-v2")) /* Optional, continue without devfreq */ @@ -124,7 +119,15 @@ int lima_devfreq_init(struct lima_device *ldev)
spin_lock_init(&ldevfreq->lock);
- ret = devm_pm_opp_set_config(dev, &config); + /* + * clkname is set separately so it is not affected by the optional + * regulator setting which may return error. + */ + ret = devm_pm_opp_set_clkname(dev, "core"); + if (ret) + return ret; + + ret = devm_pm_opp_set_regulators(dev, regulator_names); if (ret) { /* Continue if the optional regulator is missing */ if (ret != -ENODEV)