forked from luck/tmp_suning_uos_patched
i2c: Not all adapters have a parent
The code in acpi_i2c_register_devices() assumes that all i2c adapters have a parent. This is not necessarily the case, for example the i2c-stub driver instantiate a virtual i2c adapter without a parent. Check for this to avoid a NULL pointer deference. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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@ -1134,6 +1134,9 @@ static void acpi_i2c_register_devices(struct i2c_adapter *adap)
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acpi_handle handle;
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acpi_status status;
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if (!adap->dev.parent)
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return;
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handle = ACPI_HANDLE(adap->dev.parent);
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if (!handle)
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return;
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