From nobody Tue Dec 30 16:55:20 2025 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 CBF6AC4332F for ; Mon, 13 Nov 2023 13:17:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230394AbjKMNRn (ORCPT ); Mon, 13 Nov 2023 08:17:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230322AbjKMNRm (ORCPT ); Mon, 13 Nov 2023 08:17:42 -0500 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FFDBD6C for ; Mon, 13 Nov 2023 05:17:39 -0800 (PST) Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1cc3bb32b5dso38454115ad.3 for ; Mon, 13 Nov 2023 05:17:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699881459; x=1700486259; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=BENlKbuFPKHXVOXGwxTOg37z6FdtT5c5MFKpNXhyfZY=; b=Eg1bGrNrgkZr00NB0dkckvtN+DGJEZHoKR1aRuOpbup8UFCXu+y0HYRjVkay4BEsjN YLV6Oj6/6NrGTjkJbHaxFBP3DE863aI7XlZ4+xtzdCTQ/UiSVbrssoRtaP/zwugIYXg/ RIjOcbW23vGnLCNiXp8/O06ch+q7alsZYrbZqU+VodcLucRTflEGSP2Y38J4K3cW25zn Ilnp9f7cX1D0134h3NY9rPbAjlyHEN2Fmop1FQ2SVoCEKGGuoWoUnsUegu2/19skKv9/ EpTSv2S0gzh4VjHMApTCPypv33kbHKH0mqLCBdPcr6eGlj3lJAgkpULszGt3Z8fPogaH cqrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699881459; x=1700486259; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=BENlKbuFPKHXVOXGwxTOg37z6FdtT5c5MFKpNXhyfZY=; b=VfZOFBwfH5Wtd8SWz9hzbZbCvK5Kw+weXnhQJlOFjSv0VP4v3QS+GGJYM8Keo32Qrm sXc7/0LSlNXA+fzgVwK70BDHcrJQMaheQUIDAQE7SdfS3S1OeVHZg+qb4nH/QhQmvhBp 2/iJTIKCIewhI97W2A8V3yi9E55mU7ZHQxV/ZRzEpb6MVpRVY15Fl+TYxjhBsdwDlv5d rKO1u0oMrrHQjuIy/PObZI39DlZzj4XEATOU8pLiJf2K0XTzXcSFAnfM9H+Sll7jm2Yo qi7MvM/YZue0B+VPEOSH4kAh8ABFEEpm0SCQw/S1vyj3mWTGjGIaIj16/YLW1hyRzxBb c2FQ== X-Gm-Message-State: AOJu0Yyts1KYeJcSVGjjRIgVd0uT5y+OUGKqBgMjGMMIB0bX4g3aDwHm X5VkMPilIi4oeZyfLRU0fVpJc9gYS7WspVUH X-Google-Smtp-Source: AGHT+IHqm4pW1ifICU5+1F7FEK25e8uswN0H7HrMr7MU2H/FOdlpI4jqngLLlc2SDiSyEOdRJVj0sg== X-Received: by 2002:a17:903:2289:b0:1cc:665d:f822 with SMTP id b9-20020a170903228900b001cc665df822mr9071037plh.32.1699881458663; Mon, 13 Nov 2023 05:17:38 -0800 (PST) Received: from localhost.localdomain ([149.167.148.33]) by smtp.gmail.com with ESMTPSA id z18-20020a170903019200b001bb97e51ab4sm4020621plg.98.2023.11.13.05.17.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Nov 2023 05:17:38 -0800 (PST) From: Ronald Monthero Cc: richard@nod.at, vigneshr@ti.com, heiko@sntech.de, martin.blumenstingl@googlemail.com, paul@crapouillou.net, robh@kernel.org, u.kleine-koenig@pengutronix.de, debug.penguin32@gmail.com, AVKrasnov@sberdevices.ru, r.czerwinski@pengutronix.de, andriy.shevchenko@linux.intel.com, jaimeliao.tw@gmail.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, Miquel Raynal , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH] mtd:nand: Increment IFC_TIMEOUT_MSECS for nand controller response Date: Mon, 13 Nov 2023 23:16:28 +1000 Message-Id: <20231113131634.614467-1-debug.penguin32@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The nand controller not responding scenario occurs causing blocked tasks and rcu_prempt warnings of stall on cpus. Incrementing the IFC_TIMEOUT_MSECS appears to solve the nand controller not responding issue. ** ID_531 main/smrcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P116/2:b..l (detected by 1, t=3D2102 jiffies, g=3D12653, q=3D518) task:irq/31-arm-irq1 state:D stack: 0 pid: 116 ppid: 2 flags:0x00000000 [<8064b97f>] (__schedule) from [<8064bb01>] (schedule+0x8d/0xc2) [<8064bb01>] (schedule) from [<8064fa65>] (schedule_timeout+0x6d/0xa0) [<8064fa65>] (schedule_timeout) from [<804ba353>] (fsl_ifc_run_command+0x6f= /0x178) [<804ba353>] (fsl_ifc_run_command) from [<804ba72f>] (fsl_ifc_cmdfunc+0x203= /0x2b8) [<804ba72f>] (fsl_ifc_cmdfunc) from [<804b135f>] (nand_status_op+0xaf/0xe0) [<804b135f>] (nand_status_op) from [<804b13b3>] (nand_check_wp+0x23/0x48) [<804b13b3>] (nand_check_wp) from [<804b231d>] (nand_do_write_ops+0x99/0x2b= 8) [<804b231d>] (nand_do_write_ops) from [<804b5355>] (nand_write_oob+0x3b/0x4= a) [<804b5355>] (nand_write_oob) from [<804a3585>] (mtd_write+0x41/0x5c) [<804a3585>] (mtd_write) from [<804c1d47>] (ubi_io_write+0x17f/0x22c) [<804c1d47>] (ubi_io_write) from [<804c047b>] (ubi_eba_write_leb+0x5b/0x1d0) [<804c047b>] (ubi_eba_write_leb) from [<804bf62d>] (ubi_leb_write+0x75/0x90) [<804bf62d>] (ubi_leb_write) from [<803745b7>] (ubifs_leb_write+0x4b/0x8c) [<803745b7>] (ubifs_leb_write) from [<80374bbb>] (ubifs_wbuf_sync_nolock+0x= 10f/0x1a4) [<80374bbb>] (ubifs_wbuf_sync_nolock) from [<8036c6dd>] (ubifs_jnl_update+0= x1e9/0x36c) [<8036c6dd>] (ubifs_jnl_update) from [<80370933>] (ubifs_create+0xb3/0x130) [<80370933>] (ubifs_create) from [<802cf0c7>] (lookup_open+0x173/0x1c4) [<802cf0c7>] (lookup_open) from [<802cf8a3>] (open_last_lookups+0xd7/0x16c) [<802cf8a3>] (open_last_lookups) from [<802d08e5>] (path_openat+0x91/0x104) [<802d08e5>] (path_openat) from [<802d0989>] (do_filp_open+0x31/0x74) [<802d0989>] (do_filp_open) from [<802c4fb3>] (file_open_name+0x33/0x48) [<802c4fb3>] (file_open_name) from [<802c4fe9>] (filp_open+0x21/0x2e) [<802c4fe9>] (filp_open) from [<80490bd3>] (irq1_handler+0x53/0xa4) [<80490bd3>] (irq1_handler) from [<80247dd7>] (irq_forced_thread_fn+0x1f/0x= 4c) [<80247dd7>] (irq_forced_thread_fn) from [<80247cd9>] (irq_thread+0x89/0x11= 4) [<80247cd9>] (irq_thread) from [<8022ca67>] (kthread+0xcf/0xe4) [<8022ca67>] (kthread) from [<80200149>] (ret_from_fork+0x11/0x28) Exception stack(0x822bbfb0 to 0x822bbff8) bfa0: 00000000 00000000 00000000 000000= 00 bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 000000= 00 bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 fsl,ifc-nand 7e800000.nand: Controller is not responding ID_531 main/smp_fsm.c:1884 ] (__schedule) from [<8064bb01>] (schedule+0x8d/0xc2) [<8064bb01>] (schedule) from [<8064dacd>] (rt_mutex_slowlock_block.con) [<8064dacd>] (rt_mutex_slowlock_block.constprop.0) from [<8064db57>]=20 [<8064db57>] (__rt_mutex_slowlock.constprop.0) from [<8064dbf7>]=20 [<8064dbf7>] (rt_mutex_slowlock.constprop.0) from [<804b2047>]=20 [<804b2047>] (nand_get_device) from [<804b5335>] (nand_write_oob+0x1b/0x4a) [<804b5335>] (nand_write_oob) from [<804a3585>] (mtd_write+0x41/0x5c) [<804a3585>] (mtd_write) from [<804c1d47>] (ubi_io_write+0x17f/0x22c) [<804c1d47>] (ubi_io_write) from [<804c047b>] (ubi_eba_write_leb+0x5b/0x1d0) [<804c047b>] (ubi_eba_write_leb) from [<804bf62d>] (ubi_leb_write+0x75/0x90) [<804bf62d>] (ubi_leb_write) from [<803745b7>] (ubifs_leb_write+0x4b/0x8c) [<803745b7>] (ubifs_leb_write) from [<80374bbb>] (ubifs_wbuf_sync_nolock+0x= 10f/0x1a4) [<80374bbb>] (ubifs_wbuf_sync_nolock) from [<8036c6dd>] (ubifs_jnl_update+0= x1e9/0x36c) Signed-off-by: Ronald Monthero --- drivers/mtd/nand/raw/fsl_ifc_nand.c | 2 +- drivers/mtd/nand/raw/nand_base.c | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl= _ifc_nand.c index 20bb1e0cb5eb..42f8ea46b6a8 100644 --- a/drivers/mtd/nand/raw/fsl_ifc_nand.c +++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c @@ -21,7 +21,7 @@ =20 #define ERR_BYTE 0xFF /* Value returned for read bytes when read failed */ -#define IFC_TIMEOUT_MSECS 500 /* Maximum number of mSecs to wait +#define IFC_TIMEOUT_MSECS 1000 /* Maximum number of mSecs to wait for IFC NAND Machine */ =20 struct fsl_ifc_ctrl; diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_b= ase.c index 9e24bedffd89..05b52ed41f4c 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -363,8 +363,11 @@ static int nand_check_wp(struct nand_chip *chip) int ret; =20 /* Broken xD cards report WP despite being writable */ - if (chip->options & NAND_BROKEN_XD) + if (chip->options & NAND_BROKEN_XD) { + pr_info("nand_chip->options indicates NAND_BROKEN_XD %d\n", + (chip->options & NAND_BROKEN_XD)); return 0; + } =20 /* Check the WP bit */ ret =3D nand_status_op(chip, &status); --=20 2.34.1