On 10/07/2023 20:25, Kuogee Hsieh wrote:
On 7/9/2023 1:32 PM, Abhinav Kumar wrote:
On 7/9/2023 11:00 AM, Dmitry Baryshkov wrote:
On Sun, 9 Jul 2023 at 20:22, Abhinav Kumar
<quic_abhinavk@xxxxxxxxxxx> wrote:
On 7/7/2023 5:06 PM, Dmitry Baryshkov wrote:
On 08/07/2023 02:52, Kuogee Hsieh wrote:
Since both pm_runtime_resume() and pm_runtime_suspend() are not
populated at dp_pm_ops. Those pm_runtime_get/put() functions within
dp_power.c will not have any effects in addition to increase/decrease
power counter.
Lie.
Even if the commit text is incorrect, review comments like this are not
helping the patch nor the author and will just get ignored anyway.
The review comment might be overreacting, excuse me. I was really
impressed by the commit message, which contradicts the basic source
code. pm_runtime_get() does a lot more than just increasing the power
counter.
It says within dp_power.c. Nonetheless, please let us know what is
missing in the context of this patch like Bjorn did to make it an
effective review and we can correct it. In its current form, the
review comment is adding no value.
I am new in pm.
Any recommendation to revise this commit test?
I'd say, squash patches 1 and 2 and then state in the commit message
that you are changing pm_runtime code paths because you want to power up
the device from the runtime callbacks rather than just waking up the
device in the power up path.
Generally it is much easier to justify changing from A to B rather than
just dropping A and then adding B.
Also pm_runtime_xxx() should be executed at top
layer.
Why?
I guess he meant to centralize this around dp_display.c. Will elaborate
while posting the next rev.
Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/dp/dp_power.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_power.c
b/drivers/gpu/drm/msm/dp/dp_power.c
index 5cb84ca..ed2f62a 100644
--- a/drivers/gpu/drm/msm/dp/dp_power.c
+++ b/drivers/gpu/drm/msm/dp/dp_power.c
@@ -152,8 +152,6 @@ int dp_power_client_init(struct dp_power
*dp_power)
power = container_of(dp_power, struct dp_power_private,
dp_power);
- pm_runtime_enable(power->dev);
-
return dp_power_clk_init(power);
}
@@ -162,8 +160,6 @@ void dp_power_client_deinit(struct dp_power
*dp_power)
struct dp_power_private *power;
power = container_of(dp_power, struct dp_power_private,
dp_power);
-
- pm_runtime_disable(power->dev);
}
int dp_power_init(struct dp_power *dp_power)
@@ -173,11 +169,7 @@ int dp_power_init(struct dp_power *dp_power)
power = container_of(dp_power, struct dp_power_private,
dp_power);
- pm_runtime_get_sync(power->dev);
-
rc = dp_power_clk_enable(dp_power, DP_CORE_PM, true);
- if (rc)
- pm_runtime_put_sync(power->dev);
return rc;
}
@@ -189,7 +181,6 @@ int dp_power_deinit(struct dp_power *dp_power)
power = container_of(dp_power, struct dp_power_private,
dp_power);
dp_power_clk_enable(dp_power, DP_CORE_PM, false);
- pm_runtime_put_sync(power->dev);
return 0;
}
--
With best wishes
Dmitry
