From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753511AbdBDA6d (ORCPT ); Fri, 3 Feb 2017 19:58:33 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:44876 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753138AbdBDA6a (ORCPT ); Fri, 3 Feb 2017 19:58:30 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 41B8960953 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=subhashj@codeaurora.org From: Subhash Jadavani To: vinholikatti@gmail.com, jejb@linux.vnet.ibm.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, Venkat Gopalakrishnan , Subhash Jadavani , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v1 8/8] scsi: ufs: dump hw regs on link failures Date: Fri, 3 Feb 2017 16:58:24 -0800 Message-Id: <1486169904-22972-1-git-send-email-subhashj@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Venkat Gopalakrishnan Dump host state, power info and host/vendor specific registers on link failures. This provides useful info to debug the failures. Signed-off-by: Venkat Gopalakrishnan Signed-off-by: Subhash Jadavani --- drivers/scsi/ufs/ufshcd.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a99a673..8b721f4 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3554,6 +3554,12 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) ret = (status != PWR_OK) ? status : -1; } out: + if (ret) { + ufshcd_print_host_state(hba); + ufshcd_print_pwr_info(hba); + ufshcd_print_host_regs(hba); + } + spin_lock_irqsave(hba->host->host_lock, flags); hba->active_uic_cmd = NULL; hba->uic_async_done = NULL; @@ -4146,8 +4152,12 @@ static int ufshcd_link_startup(struct ufs_hba *hba) ret = ufshcd_make_hba_operational(hba); out: - if (ret) + if (ret) { dev_err(hba->dev, "link startup failed %d\n", ret); + ufshcd_print_host_state(hba); + ufshcd_print_pwr_info(hba); + ufshcd_print_host_regs(hba); + } return ret; } -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project