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Date:	Thu, 1 Feb 2007 09:45:22 +0000
From:	Russell King <>
To:	Aubrey Li <>
Cc:	Alan <>,,
Subject: Re: [BUG]: Weird serial core issue

On Thu, Feb 01, 2007 at 10:33:40AM +0800, Aubrey Li wrote:
> On 2/1/07, Alan <> wrote:
> >What code is running on that console at the time. Most likely that user
> >code is also saving/restoring terminal settings so overwrite yours
> >
> I implemented the serial driver by myself, :). See the attachment.
> I didn't save/restore terminal setting in the my_set_termios().
> I trace this back till tty_tioctl(..., unsigned long arg), everytime I
> type "ENTER" key,
> the argument "arg" passed into tty_ioctl() is the address of a termios
> structure, which include wrong c_cflag.

If userspace is issuing an ioctl to re-enable crtscts, and the kernel
is obliging, how can this be a kernel bug?

Russell King
 Linux kernel    2.6 ARM Linux   -
 maintainer of:
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