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Subject: media: qcom: camss: Fix pm_domain_on sequence in probe Author: Bryan O'Donoghue bryan.odonoghue@linaro.org Date: Wed Aug 30 16:16:06 2023 +0100

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@vger.kernel.org Signed-off-by: Bryan O'Donoghue bryan.odonoghue@linaro.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl

drivers/media/platform/qcom/camss/camss.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

---

diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index f11dc59135a5..75991d849b57 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -1619,6 +1619,12 @@ static int camss_probe(struct platform_device *pdev) if (ret < 0) 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; @@ -1678,12 +1684,6 @@ static int camss_probe(struct platform_device *pdev) } }

- 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;