From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754706Ab2BEW1A (ORCPT ); Sun, 5 Feb 2012 17:27:00 -0500 Received: from 1wt.eu ([62.212.114.60]:62070 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754449Ab2BEW0w (ORCPT ); Sun, 5 Feb 2012 17:26:52 -0500 Message-Id: <20120205220950.982277502@pcw.home.local> User-Agent: quilt/0.48-1 Date: Sun, 05 Feb 2012 23:10:25 +0100 From: Willy Tarreau To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anton Blanchard , Benjamin Herrenschmidt , Greg KH Subject: [PATCH 36/91] powerpc/pseries/hvconsole: Fix dropped console output In-Reply-To: <0635750f5f06ed2ca212b91fcb5c4483@local> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.27-longterm review patch. If anyone has any objections, please let us know. ------------------ 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: Greg Kroah-Hartman --- arch/powerpc/platforms/pseries/hvconsole.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) Index: longterm-2.6.27/arch/powerpc/platforms/pseries/hvconsole.c =================================================================== --- longterm-2.6.27.orig/arch/powerpc/platforms/pseries/hvconsole.c 2012-02-05 22:34:33.922915442 +0100 +++ longterm-2.6.27/arch/powerpc/platforms/pseries/hvconsole.c 2012-02-05 22:34:39.962914708 +0100 @@ -73,7 +73,7 @@ if (ret == H_SUCCESS) return count; if (ret == H_BUSY) - return 0; + return -EAGAIN; return -EIO; }