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@xxxxxxx> Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx> --- drivers/i2c/i2c-core.c | 3 +++ 1 file changed, 3 insertions(+) --- linux-3.12-rc4.orig/drivers/i2c/i2c-core.c 2013-09-24 00:41:09.000000000 +0200 +++ linux-3.12-rc4/drivers/i2c/i2c-core.c 2013-10-10 07:46:12.244886047 +0200 @@ -1134,6 +1134,9 @@ static void acpi_i2c_register_devices(st acpi_handle handle; acpi_status status; + if (!adap->dev.parent) + return; + handle = ACPI_HANDLE(adap->dev.parent); if (!handle) return; -- Jean Delvare Suse L3 Support -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
