Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965495Ab2EOCgt (ORCPT ); Mon, 14 May 2012 22:36:49 -0400 Received: from mail1.windriver.com ([147.11.146.13]:53514 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965382Ab2EOCRx (ORCPT ); Mon, 14 May 2012 22:17:53 -0400 From: Paul Gortmaker To: , Subject: [34-longterm 139/179] powerpc/pseries/hvconsole: Fix dropped console output Date: Mon, 14 May 2012 22:13:55 -0400 Message-ID: <1337048075-6132-140-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.7.9.6 In-Reply-To: <1337048075-6132-1-git-send-email-paul.gortmaker@windriver.com> References: <1337048075-6132-1-git-send-email-paul.gortmaker@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1490 Lines: 41 From: Anton Blanchard ------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. ------------------- commit 51d33021425e1f905beb4208823146f2fb6517da upstream. Return -EAGAIN when we get H_BUSY back from the hypervisor. This makes the hvc console driver retry, avoiding dropped printks. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Gortmaker --- arch/powerpc/platforms/pseries/hvconsole.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c index 3f6a89b..041e87c 100644 --- a/arch/powerpc/platforms/pseries/hvconsole.c +++ b/arch/powerpc/platforms/pseries/hvconsole.c @@ -73,7 +73,7 @@ int hvc_put_chars(uint32_t vtermno, const char *buf, int count) if (ret == H_SUCCESS) return count; if (ret == H_BUSY) - return 0; + return -EAGAIN; return -EIO; } -- 1.7.9.6 -- 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/