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Subject: media: qcom: camss: Fix genpd cleanup Author: Bryan O'Donoghue bryan.odonoghue@linaro.org Date: Wed Aug 30 16:16:08 2023 +0100
Right now we never release the power-domains properly on the error path. Add a routine to be reused for this purpose and appropriate jumps in probe() to run that routine where necessary.
Fixes: 2f6f8af67203 ("media: camss: Refactor VFE power domain toggling") Cc: stable@vger.kernel.org Signed-off-by: Bryan O'Donoghue bryan.odonoghue@linaro.org Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl
drivers/media/platform/qcom/camss/camss.c | 35 ++++++++++++++++++------------- 1 file changed, 21 insertions(+), 14 deletions(-)
---
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index a925b2bfd898..c6df862c79e3 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -1538,6 +1538,20 @@ static int camss_icc_get(struct camss *camss) return 0; }
+static void camss_genpd_cleanup(struct camss *camss) +{ + int i; + + if (camss->genpd_num == 1) + return; + + if (camss->genpd_num > camss->vfe_num) + device_link_del(camss->genpd_link[camss->genpd_num - 1]); + + for (i = 0; i < camss->genpd_num; i++) + dev_pm_domain_detach(camss->genpd[i], true); +} + /* * camss_probe - Probe CAMSS platform device * @pdev: Pointer to CAMSS platform device @@ -1627,11 +1641,11 @@ static int camss_probe(struct platform_device *pdev)
ret = camss_init_subdevices(camss); if (ret < 0) - return ret; + goto err_genpd_cleanup;
ret = dma_set_mask_and_coherent(dev, 0xffffffff); if (ret) - return ret; + goto err_genpd_cleanup;
camss->media_dev.dev = camss->dev; strscpy(camss->media_dev.model, "Qualcomm Camera Subsystem", @@ -1643,7 +1657,7 @@ static int camss_probe(struct platform_device *pdev) ret = v4l2_device_register(camss->dev, &camss->v4l2_dev); if (ret < 0) { dev_err(dev, "Failed to register V4L2 device: %d\n", ret); - return ret; + goto err_genpd_cleanup; }
v4l2_async_nf_init(&camss->notifier, &camss->v4l2_dev); @@ -1693,28 +1707,19 @@ err_register_subdevs: err_v4l2_device_unregister: v4l2_device_unregister(&camss->v4l2_dev); v4l2_async_nf_cleanup(&camss->notifier); +err_genpd_cleanup: + camss_genpd_cleanup(camss);
return ret; }
void camss_delete(struct camss *camss) { - int i; - v4l2_device_unregister(&camss->v4l2_dev); media_device_unregister(&camss->media_dev); media_device_cleanup(&camss->media_dev);
pm_runtime_disable(camss->dev); - - if (camss->genpd_num == 1) - return; - - if (camss->genpd_num > camss->vfe_num) - device_link_del(camss->genpd_link[camss->genpd_num - 1]); - - for (i = 0; i < camss->genpd_num; i++) - dev_pm_domain_detach(camss->genpd[i], true); }
/* @@ -1733,6 +1738,8 @@ static void camss_remove(struct platform_device *pdev)
if (atomic_read(&camss->ref_count) == 0) camss_delete(camss); + + camss_genpd_cleanup(camss); }
static const struct of_device_id camss_dt_match[] = {