From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751927AbbCJL4I (ORCPT ); Tue, 10 Mar 2015 07:56:08 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:33746 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751188AbbCJL4D (ORCPT ); Tue, 10 Mar 2015 07:56:03 -0400 From: Mark Brown To: Greg Kroah-Hartman Cc: Heiko Stuebner , Bjorn Andersson , linux-kernel@vger.kernel.org, Mark Brown Date: Tue, 10 Mar 2015 11:55:49 +0000 Message-Id: <1425988549-12310-1-git-send-email-broonie@kernel.org> X-Mailer: git-send-email 2.1.4 X-SA-Exim-Connect-IP: 94.175.94.161 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: [PATCH] driver core: Make probe deferral more quiet X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently probe deferral prints a message every time a device requests deferral at info severity (which is displayed by default). This can have an impact on system boot times with serial consoles and is generally quite noisy. Since subsystems and drivers should already be logging the specific reason for probe deferral in order to aid users in understanding problems the messages from the driver core should be redundant lower the severity of the messages printed, cutting down on the volume of output on the console. This does mean that if the drivers and subsystems aren't doing a good job we get no output on the console by default. Ideally we'd be able to arrange to print if nothing else printed, though that's a little fun. Even better would be to come up with a mechanism that explicitly does dependencies so we don't have to keep polling and erroring. Signed-off-by: Mark Brown --- drivers/base/dd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index cdc779cf79a3..a3abe628aa8d 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -322,7 +322,7 @@ probe_failed: if (ret == -EPROBE_DEFER) { /* Driver requested deferred probing */ - dev_info(dev, "Driver %s requests probe deferral\n", drv->name); + dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name); driver_deferred_probe_add(dev); /* Did a trigger occur while probing? Need to re-trigger if yes */ if (local_trigger_count != atomic_read(&deferred_trigger_count)) -- 2.1.4