From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Tycho Andersen <tycho@tycho.ws>
Cc: Jiri Slaby <jslaby@suse.com>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
"Serge E . Hallyn" <serge@hallyn.com>
Subject: Re: [PATCH v4] uart: fix race between uart_put_char() and uart_shutdown()
Date: Thu, 12 Jul 2018 17:40:15 +0200 [thread overview]
Message-ID: <20180712154015.GC13114@kroah.com> (raw)
In-Reply-To: <20180712150822.GC13192@cisco.cisco.com>
On Thu, Jul 12, 2018 at 09:08:22AM -0600, Tycho Andersen wrote:
> On Thu, Jul 12, 2018 at 05:04:38PM +0200, Greg Kroah-Hartman wrote:
> > On Wed, Jul 11, 2018 at 10:07:44AM -0600, Tycho Andersen wrote:
> > > + if (uport)
> > > + spin_lock_irqsave(&uport->lock, flags);
> >
> > That's the same thing as just calling uart_port_lock(), why aren't you
> > doing that?
>
> Because the compiler can't seem to "see" through the macros/ref calls,
> and I get the warning I mentioned here if I use them:
>
> https://lkml.org/lkml/2018/7/6/840
What horrible version of gcc are you using that give you that? Don't
open-code things just because of a broken compiler.
thanks,
greg k-h
next prev parent reply other threads:[~2018-07-12 15:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-05 0:01 [PATCH] uart: fix race between uart_put_char() and uart_shutdown() Tycho Andersen
2018-06-05 3:59 ` Serge E. Hallyn
2018-06-06 21:42 ` Tycho Andersen
2018-06-28 12:05 ` Greg Kroah-Hartman
2018-06-29 10:24 ` [PATCH v2] " Tycho Andersen
2018-06-29 16:43 ` Tycho Andersen
2018-07-06 14:39 ` Greg Kroah-Hartman
2018-07-06 16:24 ` [PATCH v3] " Tycho Andersen
2018-07-06 16:49 ` Andy Shevchenko
2018-07-06 18:39 ` Tycho Andersen
2018-07-06 20:48 ` Andy Shevchenko
2018-07-06 21:22 ` Tycho Andersen
2018-07-11 16:07 ` [PATCH v4] " Tycho Andersen
2018-07-11 19:24 ` Serge E. Hallyn
2018-07-11 19:49 ` Serge E. Hallyn
2018-07-11 20:00 ` Tycho Andersen
2018-07-12 15:05 ` Greg Kroah-Hartman
2018-07-12 9:03 ` Andy Shevchenko
2018-07-12 14:13 ` Tycho Andersen
2018-07-12 15:04 ` Greg Kroah-Hartman
2018-07-12 15:08 ` Tycho Andersen
2018-07-12 15:40 ` Greg Kroah-Hartman [this message]
2018-07-12 18:18 ` Tycho Andersen
2018-07-12 18:18 ` Tycho Andersen
2018-07-12 18:25 ` Greg Kroah-Hartman
2018-07-12 18:30 ` Tycho Andersen
2018-07-13 9:28 ` Greg Kroah-Hartman
2018-07-13 14:01 ` Tycho Andersen
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