raiden00pl opened a new pull request, #19542:
URL: https://github.com/apache/nuttx/pull/19542
## Summary
on_hci() ran the host upcall with g_sdc_dev.lock held. On nrf53 this
deadlocks the BLE link: the upcall waits for the app core, which cannot
answer while bt_hci_send() blocks on the same lock.
nrf52 modified for consistency, deadlock is not possible there.
## Impact
fix deadlock on nrf53 for heavy BLE trafic
## Testing
thingy53 with heavy data stream over BLE doesn't freeze
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