From patchwork Tue Mar 29 23:38:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 104967 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp2295258lbc; Tue, 29 Mar 2016 16:38:52 -0700 (PDT) X-Received: by 10.66.118.7 with SMTP id ki7mr7792813pab.152.1459294732236; Tue, 29 Mar 2016 16:38:52 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u25si1633426pfa.228.2016.03.29.16.38.51; Tue, 29 Mar 2016 16:38:52 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753599AbcC2Xiu (ORCPT + 29 others); Tue, 29 Mar 2016 19:38:50 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:53606 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751064AbcC2Xit (ORCPT ); Tue, 29 Mar 2016 19:38:49 -0400 Received: from [64.55.107.4] (helo=finisterre) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1al3Df-0004Ni-46; Tue, 29 Mar 2016 23:38:43 +0000 Received: from broonie by finisterre with local (Exim 4.87) (envelope-from ) id 1al3Dc-0005Lp-IV; Tue, 29 Mar 2016 16:38:40 -0700 From: Mark Brown To: Geert Uytterhoeven , Liam Girdwood Cc: linux-kernel@vger.kernel.org, Mark Brown Date: Tue, 29 Mar 2016 16:38:39 -0700 Message-Id: <1459294719-20531-1-git-send-email-broonie@kernel.org> X-Mailer: git-send-email 2.8.0.rc3 X-SA-Exim-Connect-IP: 64.55.107.4 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mezzanine.sirena.org.uk X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 Subject: [PATCH] regulator: core: Log when we bring constraints into range 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This aids in debugging problems triggered by the regulator core applying its constraints, we could potentially crash immediately after updating the voltage if the constraints are buggy. Signed-off-by: Mark Brown --- drivers/regulator/core.c | 2 ++ 1 file changed, 2 insertions(+) -- 2.8.0.rc3 diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 881c37e61f75..18dd7ee61455 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -935,6 +935,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, } if (target_min != current_uV || target_max != current_uV) { + rdev_info(rdev, "Bringing %duV into %d-%duV\n", + current_uV, target_min, target_max); ret = _regulator_do_set_voltage( rdev, target_min, target_max); if (ret < 0) {