From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [PATCH] serial: imx: protect Soft Reset of port with lock Date: Thu, 26 Mar 2015 23:01:13 +0100 Message-ID: <20150326220113.GA24630@kroah.com> References: <1426228691-20529-1-git-send-email-jiada_wang@mentor.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1426228691-20529-1-git-send-email-jiada_wang@mentor.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Jiada Wang Cc: jslaby@suse.cz, linux-arm-kernel@lists.infradead.org, linux-serial@vger.kernel.org List-Id: linux-serial@vger.kernel.org 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 > --- > drivers/tty/serial/imx.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) Doesn't apply to my tree :(