This is a note to let you know that I've just added the patch titled
drm/lima: Fix opp clkname setting in case of missing regulator
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-lima-fix-opp-clkname-setting-in-case-of-missing-.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 557f29ff0d3fb94fd4c4865a8583c8a0ace53a74
Author: Erico Nunes <nunes.erico@xxxxxxxxx>
Date: Thu Oct 27 09:32:00 2022 +0200
drm/lima: Fix opp clkname setting in case of missing regulator
[ 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@xxxxxxxxxx>
Signed-off-by: Erico Nunes <nunes.erico@xxxxxxxxx>
Signed-off-by: Qiang Yu <yuq825@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20221027073200.3885839-1-nunes.erico@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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)
