From: Mika Westerberg Date: Thu, 15 May 2014 14:37:22 +0000 (+0300) Subject: i2c: designware: Disable device on system suspend X-Git-Tag: firefly_0821_release~176^2~3820^2~5^2~8 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f537295a58ddc4460b9857c6e4a6959685447f3b;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Wolfram Sang --- 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;