From patchwork Wed Mar 2 13:03:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shaik Sajida Bhanu X-Patchwork-Id: 548006 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7DF33C433EF for ; Wed, 2 Mar 2022 13:04:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242049AbiCBNFA (ORCPT ); Wed, 2 Mar 2022 08:05:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242035AbiCBNE5 (ORCPT ); Wed, 2 Mar 2022 08:04:57 -0500 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B446BC334B; Wed, 2 Mar 2022 05:04:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1646226255; x=1677762255; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=Ei9xZmq+zF939bmO9VvFSVHK064S9yezB1LXtbk8v3g=; b=iPp9oQWR8fMPAmS7XBS1t3Bgpglx+GZ3PKHSfZQyZJQsFRDcx5G9B1ZM JKSJuXk2LpAIrp969WmM9lrnyXfM4XjULqOLkzV6L1XYGbKKaq9v51anu pkFcoetCgSQEUr6y09Oq7apO/Er6CDUWrZDegha6wcvopWcThSvb9A9MY U=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 02 Mar 2022 05:04:14 -0800 X-QCInternal: smtphost Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/AES256-SHA; 02 Mar 2022 05:04:13 -0800 X-QCInternal: smtphost Received: from c-sbhanu-linux.qualcomm.com ([10.242.50.201]) by ironmsg02-blr.qualcomm.com with ESMTP; 02 Mar 2022 18:33:56 +0530 Received: by c-sbhanu-linux.qualcomm.com (Postfix, from userid 2344807) id 807EC587B; Wed, 2 Mar 2022 18:33:55 +0530 (IST) From: Shaik Sajida Bhanu To: adrian.hunter@intel.com, quic_riteshh@quicinc.com, asutoshd@quicinc.com, ulf.hansson@linaro.org, agross@kernel.org, bjorn.andersson@linaro.org, linux-mmc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: quic_vbadigan@quicinc.com, quic_rampraka@quicinc.com, quic_pragalla@quicinc.com, quic_sartgarg@quicinc.com, quic_nitirawa@quicinc.com, quic_sayalil@quicinc.com, Shaik Sajida Bhanu , Liangliang Lu , "Bao D . Nguyen" Subject: [PATCH V4 4/7] mmc: debugfs: Add debug fs error state entry for mmc driver Date: Wed, 2 Mar 2022 18:33:44 +0530 Message-Id: <1646226227-32429-5-git-send-email-quic_c_sbhanu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1646226227-32429-1-git-send-email-quic_c_sbhanu@quicinc.com> References: <1646226227-32429-1-git-send-email-quic_c_sbhanu@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Add debug fs entry error state to query eMMC and SD card errors statistics. If any errors occurred in eMMC and SD card driver level then err_state value will be set to 1. Signed-off-by: Liangliang Lu Signed-off-by: Sayali Lokhande Signed-off-by: Bao D. Nguyen Signed-off-by: Shaik Sajida Bhanu --- drivers/mmc/core/debugfs.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index db0988c..7d78eac 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -222,6 +222,19 @@ static int mmc_clock_opt_set(void *data, u64 val) DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set, "%llu\n"); +static int mmc_err_state_get(void *data, u64 *val) +{ + struct mmc_host *host = data; + + if (!host) + return -EINVAL; + + *val = host->err_state ? 1 : 0; + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n"); static int mmc_err_stats_show(struct seq_file *file, void *data) { @@ -293,6 +306,8 @@ void mmc_add_host_debugfs(struct mmc_host *host) debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, &mmc_clock_fops); + debugfs_create_file("err_state", 0600, root, host, + &mmc_err_state); debugfs_create_file("err_stats", 0600, root, host, &mmc_err_stats_fops);