ed4f0ff36e
A race condition was identified during the initialization of the
driver when the trigger function is enabled. This exposed two issues:
1 - The fxos8700_handle_int is trying to acquire the semaphore before
it gets initialized. To solve this we need to initialize the
semaphore before calling the fxos8700_trigger_init function.
2 - During the fxos8700_trigger initialization the i2c bus is used
(from fxos8700_handle_int function) at the same time as the
fxos8700_set_power is being called. To fix this we need to
initialize the semaphore with 0 and just release it after calling
the fxos8700_set_power function in the fxos8700_int
These two scenarios was reproducible in the WaRP7 board with i.MX7 SoC.
Signed-off-by: Diego Sueiro <diego.sueiro@gmail.com>
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| .. | ||
| CMakeLists.txt | ||
| Kconfig | ||
| fxos8700.c | ||
| fxos8700.h | ||
| fxos8700_trigger.c | ||