From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751515AbeBUFHJ (ORCPT ); Wed, 21 Feb 2018 00:07:09 -0500 Received: from alexa-out-tai-02.qualcomm.com ([103.229.16.227]:54422 "EHLO alexa-out-tai-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751461AbeBUFHF (ORCPT ); Wed, 21 Feb 2018 00:07:05 -0500 X-IronPort-AV: E=Sophos;i="5.46,542,1511798400"; d="scan'208";a="1477" X-IronPort-AV: E=McAfee;i="5900,7806,8810"; a="2386722" From: Asutosh Das To: subhashj@codeaurora.org, cang@codeaurora.org, vivek.gautam@codeaurora.org, rnayak@codeaurora.org, vinholikatti@gmail.com, jejb@linux.vnet.ibm.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, Yaniv Gardi , Asutosh Das , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 1/9] scsi: ufs: Allowing power mode change Date: Wed, 21 Feb 2018 10:26:32 +0530 Message-Id: <70df05c82a8624987c76b16c65143f00a111c94d.1519120988.git.asutoshd@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yaniv Gardi Due to M-PHY issues, moving from HS to any other mode or gear or even Hibern8 causes some un-predicted behavior of the device. This patch fixes this issues. Signed-off-by: Yaniv Gardi Signed-off-by: Subhash Jadavani Signed-off-by: Can Guo Signed-off-by: Asutosh Das --- drivers/scsi/ufs/ufshcd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 011c336..d74d529 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -4167,9 +4167,13 @@ static int ufshcd_link_startup(struct ufs_hba *hba) goto out; } while (ret && retries--); - if (ret) + if (ret) { /* failed to get the link up... retire */ goto out; + } else { + ufshcd_dme_set(hba, UIC_ARG_MIB(TX_LCC_ENABLE), 0); + ufshcd_dme_set(hba, UIC_ARG_MIB(TX_LCC_ENABLE), 1); + } if (link_startup_again) { link_startup_again = false; -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.