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[05/12] exynos-gsc: Fixup clock management at ->remove()

Message ID 1478701441-29107-6-git-send-email-m.szyprowski@samsung.com (mailing list archive)
State Not Applicable
Headers show

Commit Message

Marek Szyprowski Nov. 9, 2016, 2:23 p.m. UTC 
From: Ulf Hansson <ulf.hansson@linaro.org>

To make sure the clock is fully gated in ->remove(), we first need to
to bring the device into full power by invoking pm_runtime_get_sync().

Then, let's both unprepare and disable the clock.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[mszyprow: rebased onto v4.9-rc4]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/media/platform/exynos-gsc/gsc-core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
index 7e99fda..1d3bde3 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -1082,12 +1082,15 @@  static int gsc_remove(struct platform_device *pdev)
 {
 	struct gsc_dev *gsc = platform_get_drvdata(pdev);
 
+	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);
-	pm_runtime_disable(&pdev->dev);
-	clk_unprepare(gsc->clock);
+	clk_disable_unprepare(gsc->clock);
+
+	pm_runtime_put_noidle(&pdev->dev);
 
 	dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
 	return 0;