From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Date: Wed, 08 Feb 2017 15:35:27 +0000 Message-ID: <87lgtg7l1c.fsf@on-the-bus.cambridge.arm.com> References: <20170208005736.18724-1-cov@codeaurora.org> <7151be59-000c-d50b-f8f5-5fef0c053d91@arm.com> <20170208133306.GE15459@leverpostej> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: (Timur Tabi's message of "Wed, 8 Feb 2017 08:09:12 -0600") 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: Timur Tabi Cc: Mark Rutland , Mark Salter , Mark Langsdorf , Jon Masters , Jonathan Corbet , Catalin Marinas , Neil Leeder , linux-doc@vger.kernel.org, Will Deacon , linux-kernel@vger.kernel.org, Russell King , shankerd@codeaurora.org, Christopher Covington , linux-serial@vger.kernel.org, Greg Kroah-Hartman , Jiri Slaby , Robin Murphy , linux-arm-kernel@lists.infradead.org List-Id: linux-serial@vger.kernel.org On Wed, Feb 08 2017 at 2:09:12 pm GMT, Timur Tabi wrote: > Mark Rutland wrote: > >>> No, only Kryo and Falkor V1 based SOCs have this problem. Falkor V2 >>> will have this fixed. We intend to revert these fixes after Falkor >>> V1 SOCs are no longer supported. >> >> Supported by whom? > > Qualcomm. > >> Generally, once something's upstreamed we expect it to remain supported. > > The V1 SOCs are technically pre-production, but still in wide use and > it will be a while before they are all replaced by V2 SOCs. It's only > because of the "ugliness" of the erratum and its work-around that we > want to git rid of it when we can. Interesting. How will you guarantee that nobody will ever want to run a mainline kernel on this box after a certain date? Self-destruct timer? ;-) As someone who runs mainline on HW that exceeded its "sell-by" date by a few decades, I'm genuinely interested. Thanks, M. -- Jazz is not dead, it just smell funny.