From: gregkh@linuxfoundation.org (Greg KH)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] serial: imx: protect Soft Reset of port with lock
Date: Thu, 26 Mar 2015 23:01:13 +0100 [thread overview]
Message-ID: <20150326220113.GA24630@kroah.com> (raw)
In-Reply-To: <1426228691-20529-1-git-send-email-jiada_wang@mentor.com>
On Fri, Mar 13, 2015 at 03:38:11PM +0900, Jiada Wang wrote:
> Previously Soft Reset (clear of SRST bit in UCR2 register)
> of UART in startup is not protected by lock, which may have race
> with console_write, as console_write may occur at anytime even
> when UART port is shutdown.
>
> To avoid this race, protect Soft reset of UART port with spin_lock.
>
> Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
> ---
> drivers/tty/serial/imx.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
Doesn't apply to my tree :(
next prev parent reply other threads:[~2015-03-26 22:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-13 6:38 [PATCH] serial: imx: protect Soft Reset of port with lock Jiada Wang
2015-03-26 22:01 ` Greg KH [this message]
2015-04-13 6:52 ` jiwang
2015-04-13 7:20 ` Greg KH
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