[PATCH v4 2/2] serial/amba-pl011: Refactor and simplify TX FIFO handling

On Mon, Mar 30, 2015 at 04:26:52PM +0200, Jakub Kicinski wrote:

On Mon, 30 Mar 2015 13:28:40 +0100, Dave Martin wrote:

[...]

quoted

TXIS reflects the live status of the FIFO, except that it is
"spuriously" deasserted betweem reset/clear of the interrupt and the
first TX IRQ, even though the FIFO may be empty.

I missed that IRQ is cleared by writing data.

No worries, it took me a fair while to be sure of that myself.  The TRM
is not very clear on it.

Thanks for the careful review.

Cheers
---Dave