Patch "spi: sun6i: disable/unprepare clocks on remove" has been added to the 4.4-stable tree

Patch "spi: sun6i: disable/unprepare clocks on remove" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    spi: sun6i: disable/unprepare clocks on remove

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     spi-sun6i-disable-unprepare-clocks-on-remove.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon Mar 19 09:58:12 CET 2018
From: Tobias Jordan <Tobias.Jordan@elektrobit.com>
Date: Thu, 7 Dec 2017 15:04:53 +0100
Subject: spi: sun6i: disable/unprepare clocks on remove

From: Tobias Jordan <Tobias.Jordan@elektrobit.com>


[ Upstream commit 2d9bbd02c54094ceffa555143b0d68cd06504d63 ]

sun6i_spi_probe() uses sun6i_spi_runtime_resume() to prepare/enable
clocks, so sun6i_spi_remove() should use sun6i_spi_runtime_suspend() to
disable/unprepare them if we're not suspended.
Replacing pm_runtime_disable() by pm_runtime_force_suspend() will ensure
that sun6i_spi_runtime_suspend() is called if needed.

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

Fixes: 3558fe900e8af (spi: sunxi: Add Allwinner A31 SPI controller driver)
Signed-off-by: Tobias Jordan <Tobias.Jordan@elektrobit.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/spi/spi-sun6i.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/spi/spi-sun6i.c
+++ b/drivers/spi/spi-sun6i.c
@@ -457,7 +457,7 @@ err_free_master:
 
 static int sun6i_spi_remove(struct platform_device *pdev)
 {
-	pm_runtime_disable(&pdev->dev);
+	pm_runtime_force_suspend(&pdev->dev);
 
 	return 0;
 }


Patches currently in stable-queue which might be from Tobias.Jordan@elektrobit.com are

queue-4.4/spi-sun6i-disable-unprepare-clocks-on-remove.patch