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When CONFIG_DEBUG_LOCK_ALLOC is defined, mutex magic is compared and warned for (l->magic != l), here l is the address of mutex pointer. In hid-sensor-hub as part of hsdev creation, a per hsdev mutex is initialized during MFD cell creation. This hsdev, which contains, mutex is part of platform data for the a cell. But platform_data is copied in platform_device_add_data() in platform.c. This copy will copy the whole hsdev structure including mutex. But once copied the magic will no longer match. So when client driver call sensor_hub_input_attr_get_raw_value, this will trigger mutex warning. So to avoid this allocate mutex dynamically. This will be same even after copy. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
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