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spi: rockchip: Fix clock handling in remove 

We are assuming clocks enabled when calling rockchip_spi_remove, which
is not always true. Those clocks might already been disabled by the
runtime PM at that time.

Call pm_runtime_get_sync before trying to disable clocks to avoid that.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jeffy Chen 2017-08-07 20:40:19 +08:00 committed by Mark Brown
parent 43de979ddc
commit 6a06e895b2
1 changed files with 5 additions and 1 deletions
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6
drivers/spi/spi-rockchip.c
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@ -816,11 +816,15 @@ static int rockchip_spi_remove(struct platform_device *pdev)
struct spi_master *master = spi_master_get(platform_get_drvdata(pdev));
struct rockchip_spi *rs = spi_master_get_devdata(master);
pm_runtime_disable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
clk_disable_unprepare(rs->spiclk);
clk_disable_unprepare(rs->apb_pclk);
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
if (rs->dma_tx.ch)
dma_release_channel(rs->dma_tx.ch);
if (rs->dma_rx.ch)