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This means without CONFIG_PM, the JPEG Encoder will not function properly. Add this call during the probe sequence to properly configure the device. If video_registration fails after clk is enabled, clk would be left on. Make a label to cover this case. Fixes: a1e294045885 ("media: imagination: Add E5010 JPEG Encoder driver") Cc: stable@vger.kernel.org Signed-off-by: Brandon Brnich --- .../media/platform/imagination/e5010-jpeg-enc.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/imagination/e5010-jpeg-enc.c b/drivers/media/platform/imagination/e5010-jpeg-enc.c index 628d3ee35fb83..b8e24f816648d 100644 --- a/drivers/media/platform/imagination/e5010-jpeg-enc.c +++ b/drivers/media/platform/imagination/e5010-jpeg-enc.c @@ -1101,10 +1101,18 @@ static int e5010_probe(struct platform_device *pdev) pm_runtime_enable(dev); + if (!pm_runtime_enabled(dev)) { + ret = clk_prepare_enable(e5010->clk); + if (ret) { + dev_err_probe(dev, ret, "failed to enable clock\n"); + goto fail_after_v4l2_m2m_init; + } + } + ret = video_register_device(e5010->vdev, VFL_TYPE_VIDEO, 0); if (ret) { dev_err_probe(dev, ret, "failed to register video device\n"); - goto fail_after_video_register_device; + goto fail_after_clock_enable; } v4l2_info(&e5010->v4l2_dev, "Device registered as /dev/video%d\n", @@ -1112,6 +1120,11 @@ static int e5010_probe(struct platform_device *pdev) return 0; +fail_after_clock_enable: + if (pm_runtime_enabled(dev)) + pm_runtime_disable(dev); + else + clk_disable_unprepare(e5010->clk); fail_after_v4l2_m2m_init: v4l2_m2m_release(e5010->m2m_dev); fail_after_v4l2_register: @@ -1126,6 +1139,8 @@ static void e5010_remove(struct platform_device *pdev) struct e5010_dev *e5010 = platform_get_drvdata(pdev); pm_runtime_disable(e5010->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + clk_disable_unprepare(e5010->clk); video_unregister_device(e5010->vdev); v4l2_m2m_release(e5010->m2m_dev); v4l2_device_unregister(&e5010->v4l2_dev); -- 2.43.0