Zile,

The message originates from the following function. This has to do with wakeup latency.

/**
* _omap_device_activate - increase device readiness
* @od: struct omap_device *
* @ignore_lat: increase to latency target (0) or full readiness (1)?
*
* Increase readiness of omap_device @od (thus decreasing device
* wakeup latency, but consuming more power). If @ignore_lat is
* IGNORE_WAKEUP_LAT, make the omap_device fully active. Otherwise,
* if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
* latency is greater than the requested maximum wakeup latency, step
* backwards in the omap_device_pm_latency table to ensure the
* device's maximum wakeup latency is less than or equal to the
* requested maximum wakeup latency. Returns 0.
*/
static int _omap_device_activate(struct omap_device *od, u8 ignore_lat)

Which CPU governor are you using? (i.e. cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)

Try setting this to performance and see if these messages go away.

Hello,

Problem was because kernel freezes when messages with printk is printed from kernel. Everytime when some message from kernel is printed I lose couple of packets. I commented these warnings with device latency.

Regards,
Zile