From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753034AbdKVXBI (ORCPT ); Wed, 22 Nov 2017 18:01:08 -0500 Received: from fldsmtpe03.verizon.com ([140.108.26.142]:24552 "EHLO fldsmtpe03.verizon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752813AbdKVW00 (ORCPT ); Wed, 22 Nov 2017 17:26:26 -0500 From: alexander.levin@verizon.com Cc: Fabrizio Castro , Ulf Hansson , alexander.levin@verizon.com X-Host: pioneer.tdc.vzwcorp.com To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Subject: [PATCH AUTOSEL for 4.14 14/51] mmc: tmio: check mmc_regulator_get_supply return value Thread-Topic: [PATCH AUTOSEL for 4.14 14/51] mmc: tmio: check mmc_regulator_get_supply return value Thread-Index: AQHTY+DTbS8FoJ66yUWZ0zcfZDpVEQ== Date: Wed, 22 Nov 2017 22:25:39 +0000 Message-ID: <20171122222526.20021-14-alexander.levin@verizon.com> References: <20171122222526.20021-1-alexander.levin@verizon.com> In-Reply-To: <20171122222526.20021-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id vAMN1Sxl032415 From: Fabrizio Castro [ Upstream commit a3d95d1d4007b1fefd6d8b12db26fda05de05cfb ] mmc_regulator_get_supply returns -EPROBE_DEFER if either vmmc or vqmmc regulators had their probing deferred. vqmmc regulator is needed by UHS to work properly, therefore this patch checks the value returned by mmc_regulator_get_supply to make sure we have a reference to both vmmc and vqmmc (if found in the DT). Signed-off-by: Fabrizio Castro Reviewed-by: Wolfram Sang Tested-by: Wolfram Sang Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/host/tmio_mmc_core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 9c4e6199b854..3a6d49f07e22 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -1113,8 +1113,11 @@ static int tmio_mmc_init_ocr(struct tmio_mmc_host *host) { struct tmio_mmc_data *pdata = host->pdata; struct mmc_host *mmc = host->mmc; + int err; - mmc_regulator_get_supply(mmc); + err = mmc_regulator_get_supply(mmc); + if (err) + return err; /* use ocr_mask if no regulator */ if (!mmc->ocr_avail) -- 2.11.0