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Date:	Tue, 19 Jul 2011 02:35:04 +0200
From:	Andreas Bombe <>
To:	Jiri Slaby <>
Cc:,,,, Alan Cox <>,
	Arnd Bergmann <>
Subject: Re: [PATCH v2 1/6] TTY: serial, remove BTM from wait_until_sent

On Thu, Jul 14, 2011 at 02:35:10PM +0200, Jiri Slaby wrote:
> This should also fix the issue Andreas is seeing (BTM in comparison to
> BKL doesn't have any hidden functionality like unlocking during
> sleeping).

I tested the patch series and it does not appear to make a difference
for the internal (16550A) serial ports on my system. Also, I am still
unclear on why it freezes the X display during the timeout period.

The other serial port device I have at hand is a FTDI USB->Dual UART
which appears to not have a timeout at all, but then that shows no
difference whether your patches are applied or not. I don't remember if
it was always that way, at least 2.6.39 also acts identically.

Andreas Bombe
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