On 07/16/2013 11:26 AM, Denis CIOCCA wrote: > Hi all, > > I need your help to understanding my strange issue... > The scenario is that: > > - I have one I2C device (microcontroller) that expose some sensors. > - I wrote one driver that create one IIO device for each sensor. > - There is only one trigger associated to all IIO devices, and one buffer for > each device. > > When interrupt appear (DRDY of one or more sensors), the driver reads a mask > from micro to understand how many sensors have new data. After that, the > driver reads all new data from micro and save all data to one buffer. This is > done in a threaded irq function. > > When iio_trigger_poll_chained is called, all data are saved to one common > buffer, each iio_triggered_buffer_setup functions is called and can split and > push their data to iio_buffer. > > The issue is that: after some samples (about 50:100) the > iio_trigger_poll_chained doesn't call the iio_triggered_buffer_setup functions > and trig->use_count is always equals to 1. > Yea, there is a race condition. Try this patch: http://www.spinics.net/lists/linux-iio/msg08710.html - Lars -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
