RPMsg-Lite rpmsg_lite_alloc_tx_buffer Blocks 2d4sfdsf5d4f5d4f2dfd1fd12f1d2f1df

[Winsonfk]

I'm encountering an issue with the RPMsg-Lite communication between the Cortex-M33 and the Cortex-A55 on the i.MX93.

When the A55 enters suspend mode, any call to rpmsg_lite_alloc_tx_buffer() on the M33 side either blocks indefinitely or results in a hard fault, depending on the exact circumstances. The function rpmsg_lite_is_link_up() continues to return true, which prevents detecting this state cleanly.