Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757332Ab3FHBMV (ORCPT ); Fri, 7 Jun 2013 21:12:21 -0400 Received: from mail-pb0-f42.google.com ([209.85.160.42]:53678 "EHLO mail-pb0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752900Ab3FHBMU (ORCPT ); Fri, 7 Jun 2013 21:12:20 -0400 Date: Fri, 7 Jun 2013 18:12:22 -0700 From: Olof Johansson To: Kukjin Kim Cc: "'Doug Anderson'" , "'Thomas Abraham'" , "'Simon Glass'" , linux-samsung-soc@vger.kernel.org, "'Tomasz Figa'" , "'Russell King'" , "'Ben Dooks'" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] ARM: exynos: add debug_ll_io_init() call in exynos_init_io() Message-ID: <20130608011222.GC27436@quad.lixom.net> References: <1370397539-21653-1-git-send-email-dianders@chromium.org> <1370465793-7997-1-git-send-email-dianders@chromium.org> <09ca01ce6244$e2f0e7a0$a8d2b6e0$%kim@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <09ca01ce6244$e2f0e7a0$a8d2b6e0$%kim@samsung.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1427 Lines: 39 On Thu, Jun 06, 2013 at 08:32:04AM +0900, Kukjin Kim wrote: > Olof Johansson wrote: > > > > On Wed, Jun 5, 2013 at 1:56 PM, Doug Anderson > > wrote: > > > If the early MMU mapping of the UART happens to get booted out of the > > > TLB between the start of paging_init() and when we finally re-add the > > > UART at the very end of s3c_init_cpu(), we'll get a hang at bootup if > > > we've got early_printk enabled. Avoid this hang by calling > > > debug_ll_io_init() early. > > > > > > Without this patch, you can reliably reproduce a hang when early > > > printk is enabled by adding flush_tlb_all() at the start of > > > exynos_init_io(). After this patch the hang goes away. > > > > > > Signed-off-by: Doug Anderson > > > > Acked-by: Olof Johansson > > > > > > Kukjin, this seems appropriate for 3.10. Do you have other fixes > > queued or should I apply this directly? > > > If I remember correctly, nothing in my tree for 3.10. > > So please go ahead with my ack if you want, > > Acked-by: Kukjin Kim > Applied for 3.10 (together with the uncompress.h fix from Tushar) -Olof -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/