This is a note to let you know that I've just added the patch titled
media: qcom: camss: Fix pm_domain_on sequence in probe
to the 5.15-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:
media-qcom-camss-fix-pm_domain_on-sequence-in-probe.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7405116519ad70b8c7340359bfac8db8279e7ce4 Mon Sep 17 00:00:00 2001
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Date: Wed, 30 Aug 2023 16:16:06 +0100
Subject: media: qcom: camss: Fix pm_domain_on sequence in probe
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
commit 7405116519ad70b8c7340359bfac8db8279e7ce4 upstream.
We need to make sure camss_configure_pd() happens before
camss_register_entities() as the vfe_get() path relies on the pointer
provided by camss_configure_pd().
Fix the ordering sequence in probe to ensure the pointers vfe_get() demands
are present by the time camss_register_entities() runs.
In order to facilitate backporting to stable kernels I've moved the
configure_pd() call pretty early on the probe() function so that
irrespective of the existence of the old error handling jump labels this
patch should still apply to -next circa Aug 2023 to v5.13 inclusive.
Fixes: 2f6f8af67203 ("media: camss: Refactor VFE power domain toggling")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/platform/qcom/camss/camss.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -1369,6 +1369,12 @@ static int camss_probe(struct platform_d
goto err_cleanup;
}
+ ret = camss_configure_pd(camss);
+ if (ret < 0) {
+ dev_err(dev, "Failed to configure power domains: %d\n", ret);
+ goto err_cleanup;
+ }
+
ret = camss_init_subdevices(camss);
if (ret < 0)
goto err_cleanup;
@@ -1421,12 +1427,6 @@ static int camss_probe(struct platform_d
}
}
- ret = camss_configure_pd(camss);
- if (ret < 0) {
- dev_err(dev, "Failed to configure power domains: %d\n", ret);
- return ret;
- }
-
pm_runtime_enable(dev);
return 0;
Patches currently in stable-queue which might be from bryan.odonoghue@xxxxxxxxxx are
queue-5.15/media-qcom-camss-fix-missing-vfe_lite-clocks-check.patch
queue-5.15/media-qcom-camss-fix-vfe-17x-vfe_disable_output.patch
queue-5.15/media-qcom-camss-fix-vfe_get-error-jump.patch
queue-5.15/media-qcom-camss-fix-pm_domain_on-sequence-in-probe.patch
