From mboxrd@z Thu Jan 1 00:00:00 1970 From: tony@atomide.com (Tony Lindgren) Date: Mon, 7 Jul 2014 03:47:27 -0700 Subject: [PATCH] ARM: OMAP2+: l2c: squelch warning dump on power control setting In-Reply-To: <20140702081142.GU28884@atomide.com> References: <3c3a7a4861df01d0163787a9c18f7b7ac821c5b9.1403000372.git.nsekhar@ti.com> <20140617131935.GB9070@saruman.home> <20140701194704.GG13396@saruman.home> <20140702081142.GU28884@atomide.com> Message-ID: <20140707104727.GM28884@atomide.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org * Tony Lindgren [140702 01:13]: > * Felipe Balbi [140701 12:49]: > > On Tue, Jun 17, 2014 at 08:19:35AM -0500, Felipe Balbi wrote: > > > On Tue, Jun 17, 2014 at 04:04:51PM +0530, Sekhar Nori wrote: > > > > ROM code on AM437x does not support writing to L2C-310 power control > > > > register. The L2C driver, however, tries writing to this register for > > > > all revisions >= r3p0. > > > > > > > > This leads to a warning dump on boot which leads most users to believe > > > > that L2 cache is non-functional. > > > > > > > > Since the problem is understood, and cannot be addressed through software, > > > > replace the warning with a pr_info() while maintaining the WARN_ON() for > > > > other truly unexpected scenarios. > > > > > > > > Reported-by: Nishanth Menon > > > > Signed-off-by: Sekhar Nori > > > > > > Tested with today's linux-next > > > (5f295cdf5c5dbbb0c40f10f2ddae02ff46bbf773) with am437x-sk, I can see > > > that the WARNING goes away. > > > > > > Tested-by: Felipe Balbi > > > > ping here, I can't see this patch onl linus/master or next/master yet. > > Sorry I've been waiting for my pull request against -rc1 to get > merged first, no idea why that is still pending. That's now merged into v3.16-rc4, so applying this into omap-for-v3.16/fixes. Regards, Tony