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i2c: designware: Disable device on system suspend

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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>
This commit is contained in:
Mika Westerberg 2014-05-15 17:37:22 +03:00 committed by Wolfram Sang
parent 7da62cb185
commit f537295a58
1 changed files with 1 additions and 0 deletions
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drivers/i2c/busses/i2c-designware-platdrv.c
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@ -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;