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From: Linus WALLEIJ on 23 Jun 2010 18:00
Hi Alan,

I have a regression in the next tree from 20100618, the prompt
freezes on the U8500. Drilling down with git bisecting found:

34ffc9670d67fe068f9d8582dd4d2a18d9a61205
Author: Alan Cox <alan(a)linux.intel.com>
Date: Tue Jun 1 22:53:00 2010 +0200

serial: Use block_til_ready helper

Our code now rather closely resembles the helper, so switch to it.

Signed-off-by: Alan Cox <alan(a)linux.intel.com>
Cc: Arnd Bergmann <arnd(a)arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

Reverting the commit makes the problem go away.

This platform is using drivers/serial/amba-pl011.c

Any ideas I could try out to help troubleshooting this one?
It could be that you're provoking some bug in amba-pl011.c.

Yours,
Linus Walleij
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