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%3Ba=su...
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