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authorMika Westerberg <mika.westerberg@linux.intel.com>2014-05-15 16:37:22 +0200
committerWolfram Sang <wsa@the-dreams.de>2014-06-02 19:18:38 +0200
commitf537295a58ddc4460b9857c6e4a6959685447f3b (patch)
tree7c7923999856323560c8900a3327ad3845f90060
parenti2c: nuc900: remove driver (diff)
downloadlinux-f537295a58ddc4460b9857c6e4a6959685447f3b.tar.xz
linux-f537295a58ddc4460b9857c6e4a6959685447f3b.zip
i2c: designware: Disable device on system suspend
Userspace can initiate system suspend on arbitrary times which means that device drivers must make sure that their device gets quiesced before system suspend is entered. Therefore disable the I2C host controller in the driver system suspend hook. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
-rw-r--r--drivers/i2c/busses/i2c-designware-platdrv.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 9c7802614342..f72102f389c5 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -253,6 +253,7 @@ static int dw_i2c_suspend(struct device *dev)
struct platform_device *pdev = to_platform_device(dev);
struct dw_i2c_dev *i_dev = platform_get_drvdata(pdev);
+ i2c_dw_disable(i_dev);
clk_disable_unprepare(i_dev->clk);
return 0;