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d="scan'208";a="200466061" Received: from unknown (HELO [10.44.0.193]) ([103.48.210.53]) by icp-osb-irony-out3.iinet.net.au with ESMTP; 29 Jul 2019 20:53:32 +0800 Subject: Re: [PATCH 1/6] ARM: ks8695: watchdog: stop using mach/*.h To: Arnd Bergmann References: <20190415202501.941196-1-arnd@arndb.de> <2424c672-e3fb-4c32-4c24-fafc59d03a96@uclinux.org> <20190503170613.GA1783@roeck-us.net> From: Greg Ungerer Message-ID: <2bc41895-d4f9-896c-0726-0b2862fcbf25@kernel.org> Date: Mon, 29 Jul 2019 22:53:30 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190729_055343_039007_E7BA7B45 X-CRM114-Status: GOOD ( 21.67 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: LINUXWATCHDOG , Linus Walleij , "linux-kernel@vger.kernel.org" , arm-soc , Guenter Roeck , Wim Van Sebroeck , Linux ARM Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Arnd, On 23/7/19 12:44 am, Arnd Bergmann wrote: > On Sat, May 4, 2019 at 4:27 PM Greg Ungerer wrote: >> On 4/5/19 3:06 am, Guenter Roeck wrote: >>> On Fri, May 03, 2019 at 08:16:05AM +0100, Linus Walleij wrote: >>>> On Fri, May 3, 2019 at 8:02 AM Greg Ungerer wrote: >>>>> Ultimately though I am left wondering if the ks8695 support in the >>>>> kernel is useful to anyone the way it is at the moment. With a minimal >>>>> kernel configuration I can boot up to a shell - but the system is >>>>> really unreliable if you try to interactively use it. I don't think >>>>> it is the hardware - it seems to run reliably with the old code >>>>> it has running from flash on it. I am only testing the new kernel, >>>>> running with the existing user space root filesystem on it (which >>>>> dates from 2004 :-) >>>> >>>> Personally I think it is a bad sign that this subarch and boards do >>>> not have active OpenWrt support, they are routers after all (right?) >>>> and any active use of networking equipment should use a recent >>>> userspace as well, given all the security bugs that popped up over >>>> the years. > > Looking around on the internet, I found that Micrel at some point > had their own openwrt fork for ks8695, but I can't find a copy > any more, as the micrel.com domain is no longer used after the > acquisition by Microchip. I build it with uClinux-dist, https://sourceforge.net/projects/uclinux/files/uClinux%20Stable/. And again I can build for it, it just doesn't currently work in any sort of reasonable way. So I get the impression it hasn't worked for a while and nobody has noticed. > https://wikidevi.com/wiki/Micrel has a list of devices based on > ks8695, and it seems that most of these are rather memory > limited, which is a problem for recent openwrt builds. > > Only two of the 17 listed devices have the absolute minimum of 4MB > flash and 32MB RAM for openwrt, two more have 8/32 and one > or two have 4/64, but all these configurations are too limited for the > web U/I now. >>>> With IXP4xx, Gemini and EP93xx we have found active users and >>>> companies selling the chips and reference designs and even >>>> recommending it for new products (!) at times. If this is not the >>>> case with KS8695 and no hobbyists are willing to submit it >>>> to OpenWrt and modernize it to use device tree I think it should be >>>> deleted from the kernel. >>>> >>> >>> That may be the best approach if indeed no one is using it, >>> much less maintaining it. >> >> Well, I for one don't really use it any more. So I don't have a lot >> of motivation to maintain it any longer. > > I came across my patches while rebasing my backlog to 5.3-rc1. > > Should I save the (very small) trouble of sending them out again > and just remove the platform then? At this time I have no issue with removing it. Regards Greg _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel