i2c: qcom-cci: Fix ordering of pm_runtime_xx and i2c_add_adapter
commit61775d54d6
upstream. When we compile-in the CCI along with the imx412 driver and run on the RB5 we see that i2c_add_adapter() causes the probe of the imx412 driver to happen. This probe tries to perform an i2c xfer() and the xfer() in i2c-qcom-cci.c fails on pm_runtime_get() because the i2c-qcom-cci.c::probe() function has not completed to pm_runtime_enable(dev). Fix this sequence by ensuring pm_runtime_xxx() calls happen prior to adding the i2c adapter. Fixes:e517526195
("i2c: Add Qualcomm CCI I2C driver") Reported-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Tested-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -638,6 +638,11 @@ static int cci_probe(struct platform_device *pdev)
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if (ret < 0)
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goto error;
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pm_runtime_set_autosuspend_delay(dev, MSEC_PER_SEC);
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pm_runtime_use_autosuspend(dev);
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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for (i = 0; i < cci->data->num_masters; i++) {
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if (!cci->master[i].cci)
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continue;
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@ -649,14 +654,12 @@ static int cci_probe(struct platform_device *pdev)
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}
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}
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pm_runtime_set_autosuspend_delay(dev, MSEC_PER_SEC);
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pm_runtime_use_autosuspend(dev);
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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return 0;
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error_i2c:
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pm_runtime_disable(dev);
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pm_runtime_dont_use_autosuspend(dev);
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for (--i ; i >= 0; i--) {
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if (cci->master[i].cci) {
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i2c_del_adapter(&cci->master[i].adap);
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