Eric Wild f7170aff42 firmware: protect uart_tx_queue against ISR ...

cardem:
- dispatch_usb_command_cardem() appends to uart_tx_queue from the main loop
- tx_byte_tpdu() dequeues from the USART IRQ handler @ NVIC prio 0

card_handle_reset() has the same issue, drains queue and
frees uart_tx_msg from main loop while the ISR may own them.

All of this needs protection against the irq.

Needs a fixed llist_add_tail_irqsafe(), which called __enable_irq() instead of
restoring the saved PRIMASK for some unknown reason?!?!?!?

Change-Id: I7d9cdcc56263b27dfd4649dfb1da1d67761ee923

2026-08-10 16:13:59 +00:00

..

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firmware: protect uart_tx_queue against ISR

2026-08-10 16:13:59 +00:00

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firmware: protect uart_tx_queue against ISR

2026-08-10 16:13:59 +00:00