lkml.org 
[lkml]   [2017]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] spi: rockchip: Fix clock handling in remove
Date
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>
---

drivers/spi/spi-rockchip.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 5497650..a75fd9b 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -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)
--
2.1.4

\
 
 \ /
  Last update: 2017-08-07 14:42    [W:0.107 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site