From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:45083 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753727AbcA0HAc (ORCPT ); Wed, 27 Jan 2016 02:00:32 -0500 Subject: Patch "powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type" has been added to the 4.3-stable tree To: stewart@linux.vnet.ibm.com, gregkh@linuxfoundation.org, mpe@ellerman.id.au Cc: , From: Date: Tue, 26 Jan 2016 22:56:08 -0800 Message-ID: <1453877768118100@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type to the 4.3-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: powerpc-powernv-pr_warn_once-on-unsupported-opal_msg-type.patch and it can be found in the queue-4.3 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 98da62b716a3b24ab8e77453c9a8a954124c18cd Mon Sep 17 00:00:00 2001 From: Stewart Smith Date: Fri, 11 Dec 2015 12:08:23 +1100 Subject: powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type From: Stewart Smith commit 98da62b716a3b24ab8e77453c9a8a954124c18cd upstream. When running on newer OPAL firmware that supports sending extra OPAL_MSG types, we would print a warning on *every* message received. This could be a problem for kernels that don't support OPAL_MSG_OCC on machines that are running real close to thermal limits and the OCC is throttling the chip. For a kernel that is paying attention to the message queue, we could get these notifications quite often. Conceivably, future message types could also come fairly often, and printing that we didn't understand them 10,000 times provides no further information than printing them once. Signed-off-by: Stewart Smith Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/powernv/opal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -278,7 +278,7 @@ static void opal_handle_message(void) /* Sanity check */ if (type >= OPAL_MSG_TYPE_MAX) { - pr_warning("%s: Unknown message type: %u\n", __func__, type); + pr_warn_once("%s: Unknown message type: %u\n", __func__, type); return; } opal_message_do_notify(type, (void *)&msg); Patches currently in stable-queue which might be from stewart@linux.vnet.ibm.com are queue-4.3/powerpc-powernv-pr_warn_once-on-unsupported-opal_msg-type.patch