This is a note to let you know that I've just added the patch titled
drm/msm/dsi: Enable runtime PM
to the 5.4-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-msm-dsi-enable-runtime-pm.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From stable+bounces-16411-greg=kroah.com@xxxxxxxxxxxxxxx Mon Jan 29 11:39:25 2024
From: Amit Pundir <amit.pundir@xxxxxxxxxx>
Date: Mon, 29 Jan 2024 16:09:02 +0530
Subject: drm/msm/dsi: Enable runtime PM
To: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>, Stable <stable@xxxxxxxxxxxxxxx>, Sasha Levin <sashal@xxxxxxxxxx>, Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>, Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>, Douglas Anderson <dianders@xxxxxxxxxxxx>
Message-ID: <20240129103902.3239531-4-amit.pundir@xxxxxxxxxx>
From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
[ Upstream commit 6ab502bc1cf3147ea1d8540d04b83a7a4cb6d1f1 ]
Some devices power the DSI PHY/PLL through a power rail that we model
as a GENPD. Enable runtime PM to make it suspendable.
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/543352/
Link: https://lore.kernel.org/r/20230620-topic-dsiphy_rpm-v2-2-a11a751f34f0@xxxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks")
Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -606,6 +606,10 @@ static int dsi_phy_driver_probe(struct p
goto fail;
}
+ ret = devm_pm_runtime_enable(&pdev->dev);
+ if (ret)
+ return ret;
+
/* PLL init will call into clk_register which requires
* register access, so we need to enable power and ahb clock.
*/
Patches currently in stable-queue which might be from kroah.com@xxxxxxxxxxxxxxx are
queue-5.4/drm-msm-dsi-enable-runtime-pm.patch
queue-5.4/fs-move-s_isgid-stripping-into-the-vfs_-helpers.patch
queue-5.4/fs-add-mode_strip_sgid-helper.patch
queue-5.4/pm-runtime-have-devm_pm_runtime_enable-handle-pm_runtime_dont_use_autosuspend.patch
queue-5.4/pm-runtime-add-devm_pm_runtime_enable-helper.patch
