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* [PATCH] spi: sun4i: disable clocks in the remove function
@ 2017-12-06 15:22 ` Takuo Koguchi
  0 siblings, 0 replies; 20+ messages in thread
From: Takuo Koguchi @ 2017-12-06 15:22 UTC (permalink / raw)
  To: lkml, khoroshilov, takuo.koguchi.sw
  Cc: Takuo Koguchi, Mark Brown, Maxime Ripard, Chen-Yu Tsai,
	linux-spi, linux-arm-kernel, linux-kernel

mclk and hclk need to be disabled explicitly since pm_runtime_disable does
not disable the clocks.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com>
---
 drivers/spi/spi-sun4i.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
index c5cd635..9011c09 100644
--- a/drivers/spi/spi-sun4i.c
+++ b/drivers/spi/spi-sun4i.c
@@ -525,6 +525,11 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 
 static int sun4i_spi_remove(struct platform_device *pdev)
 {
+	struct spi_master *master = dev_get_drvdata(&pdev->dev);
+	struct sun4i_spi *sspi = spi_master_get_devdata(master);
+
+	clk_disable_unprepare(sspi->mclk);
+	clk_disable_unprepare(sspi->hclk);
 	pm_runtime_disable(&pdev->dev);
 
 	return 0;
-- 
2.7.4

^ permalink raw reply related	[flat|nested] 20+ messages in thread

end of thread, other threads:[~2017-12-07 12:35 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-12-06 15:22 [PATCH] spi: sun4i: disable clocks in the remove function Takuo Koguchi
2017-12-06 15:22 ` Takuo Koguchi
2017-12-06 15:20 ` Maxime Ripard
2017-12-06 15:20   ` Maxime Ripard
2017-12-06 15:20   ` Maxime Ripard
2017-12-06 18:00   ` Takuo Koguchi
2017-12-06 18:00     ` Takuo Koguchi
2017-12-06 18:00     ` Takuo Koguchi
2017-12-07  7:20   ` [PATCH V3] " Takuo Koguchi
2017-12-07  7:20     ` Takuo Koguchi
2017-12-07  7:20     ` Takuo Koguchi
2017-12-07  9:18     ` Maxime Ripard
2017-12-07  9:18       ` Maxime Ripard
2017-12-07  9:18       ` Maxime Ripard
2017-12-07 11:58     ` Mark Brown
2017-12-07 11:58       ` Mark Brown
2017-12-07 11:58       ` Mark Brown
2017-12-07 12:35     ` Applied "spi: sun4i: disable clocks in the remove function" to the spi tree Mark Brown
2017-12-07 12:35       ` Mark Brown
2017-12-07 12:35       ` Mark Brown

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