[PATCH 07/25] media: exynos-gsc: don't resume at remove time

From: Mauro Carvalho Chehab
Date: Wed May 05 2021 - 05:42:29 EST


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@xxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
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;
}
--
2.30.2