Re: [PATCH 2/2] serial: tegra: fix TX DMA descriptor use-after-free

[Austin Schlegel]

> Found by code inspection while fixing the analogous RX bug; not
> reproduced on hardware, since triggering it requires stopping an
> in-flight TX DMA transfer (e.g. via a modem control line or flush)
> at the right moment...

tegra_uart_stop_tx() is reached when TX is stopped by flow control
(e.g. CTS deasserting), not by a flush - flush_buffer() does not go
through this path. I'll remove that example in v2.
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