Re: [PATCH 07/25] media: exynos-gsc: don't resume at remove time
From: Jonathan Cameron <hidden>
Date: 2021-05-05 12:28:57
Also in:
linux-media, linux-samsung-soc, lkml
On Wed, 5 May 2021 11:41:57 +0200 Mauro Carvalho Chehab [off-list ref] wrote:
Calling pm_runtime_get_sync() at driver's removal time is not needed, as this will resume PM runtime. Also, the PM runtime code at pm_runtime_disable() already calls it, if it detects the need. So, change the logic in order to disable PM runtime earlier. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Seems sensible and a lot more along the lines of what I'd expect to see than was originally here. Reviewed-by: Jonathan Cameron <redacted>
quoted hunk ↗ jump to hunk
--- drivers/media/platform/exynos-gsc/gsc-core.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c index 9f41c2e7097a..f49f3322f835 100644 --- a/drivers/media/platform/exynos-gsc/gsc-core.c +++ b/drivers/media/platform/exynos-gsc/gsc-core.c@@ -1210,18 +1210,19 @@ static int gsc_remove(struct platform_device *pdev) struct gsc_dev *gsc = platform_get_drvdata(pdev); int i; - pm_runtime_get_sync(&pdev->dev); - gsc_unregister_m2m_device(gsc); v4l2_device_unregister(&gsc->v4l2_dev); vb2_dma_contig_clear_max_seg_size(&pdev->dev); - for (i = 0; i < gsc->num_clocks; i++) - clk_disable_unprepare(gsc->clock[i]); - pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + for (i = 0; i < gsc->num_clocks; i++) + clk_disable_unprepare(gsc->clock[i]); + + pm_runtime_set_suspended(&pdev->dev); + dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); return 0; }
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