From nobody Thu Feb 12 20:29:48 2026 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1D2E219B5BB for ; Fri, 7 Jun 2024 17:57:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717783073; cv=none; b=Y/J0keGVgLWt3C5y+HsncTCmfmY29UQp4VaTafAy8FiZv0TET0Lphk1jKZBAmvhdZ6WaeJC+n4OH45wQhAwEi6Nl6yhFByZwUky99enp9grMkzveNMgoFrFAIKeM8pMcybK+rs4HWJrsC69DDZfNgUawS1kmSEaGOnAwzLOrwsw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717783073; c=relaxed/simple; bh=77RomTbxoT5IvK9cD9wwGOCTWkN2mvquDo1FazG6ADk=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=j262SjYTdlTpkxkkUQIrFRsZsxV9TF5ijYM5X+ZC8LmxwnUkNHYSyooCT/jTGYs9Gd8pHbjSgd3YvhoV2NqTlXFbAq+Q8ITjaN05f1Cs2fSEOxfbR6YFG04O4O3iZm6lmS724Ead2DHo9Gr9L84EiUyKmbFG5k2kta4pMCSOAGg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--tadamsjr.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=z5+BBEM3; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--tadamsjr.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="z5+BBEM3" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-df4da3446beso3976203276.1 for ; Fri, 07 Jun 2024 10:57:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1717783071; x=1718387871; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Gu46/3S2zZA6k5Oex8T+jABLwZXyDcysB54lkLA/uRc=; b=z5+BBEM35CAisqPQ8iOIkk3zM+3f4OaBQWVsgWIXteJ9sqIeOOryNZzKAIS5UngGnh QAYDdC+8f/+mbuRiEbR9x6A+OJhwToQyjvgrjM3g/f+3Czhx2lTw+INa2aM89BDdK62y ADyoazOy502P5IIivIBaD77Ojh2UWvIovoCxR7OvuYj1r/GEetMpyYBu9V3PGpFBs25O +skTXMyD1WiXms61Zs0eI1p8XIo4BIENA5E7vr8+cZVD9rU3Rq/05FqWig0jHcloFniT fq5AXfCHXQ3W+mupsXsfzFUTCvFwA/11FOCXGOS4Gdulbbpp1Jd+2oEKrzZlDGW4Euq9 BT3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717783071; x=1718387871; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Gu46/3S2zZA6k5Oex8T+jABLwZXyDcysB54lkLA/uRc=; b=e4OoDWQCHekEMnWfmj5RG/orlSdrasLgqzcNTRrtthq8V2q+uHFIKkWrbEPCTQ/in4 3nOExOobU9RF+9TnfOsSyDxGTr1hTuAq3YYIEk9iBCNFMDX+NuUrZp3ItgB2r9KNgGyO 9km59CkBxb/UhPhXtluLI30Az8w3XSmzPFumWXmiQgazs52ZqlVb8jLC1zPbZj/tqU5I pI7c6MpD/UxUAhKYaIYAumyqQ0POwjdKRvNK/QdEfvSTlz0KP70WpDU6MERtbz/JxX7w i4GWEBA32cFW9ibhMQTK5pau7fXjU/t3fLIndXqXLIOqmidHa328bC2IgxtN1f8U6iNI cLWQ== X-Forwarded-Encrypted: i=1; AJvYcCVKQm/0vHky1KCDaXXqbR7xn8y/t2b3Vi19kjSXnB+6bc9M37FgxJSreUj1cmZ0nQ1om1p9rxApdyFvOvrHtmUTe9JBKViF5DghGk1K X-Gm-Message-State: AOJu0Yzs0+bi0QvQ2adzO/h2qVfJI8tm60GjxkUS9zNTjlbhpGfyv25C 1CSvr/PO92UI5DiOZ+4kx0mAJ8G4HpS0RywyhS5JKhDHkoO9C/NMaBn/YGiC1XY857QC6Q/wtC5 yaFOc0BIytw== X-Google-Smtp-Source: AGHT+IERE/EYXtc8MUrFi8tAzHgVN6/66kMWeUDhMDvzhrkKK4ZBgSlyAwdYRCe+7vczJj8PruT3vRNLZRsyaA== X-Received: from tadamsjr.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:177c]) (user=tadamsjr job=sendgmr) by 2002:a05:6902:c04:b0:dfa:59bc:8857 with SMTP id 3f1490d57ef6-dfaf66268a4mr939243276.9.1717783071064; Fri, 07 Jun 2024 10:57:51 -0700 (PDT) Date: Fri, 7 Jun 2024 17:57:42 +0000 In-Reply-To: <20240607175743.3986625-1-tadamsjr@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240607175743.3986625-1-tadamsjr@google.com> X-Mailer: git-send-email 2.45.2.505.gda0bf45e8d-goog Message-ID: <20240607175743.3986625-3-tadamsjr@google.com> Subject: [PATCH 2/3] scsi: pm80xx: Do not issue hard reset before NCQ EH From: TJ Adams To: Jack Wang , "James E . J . Bottomley" , "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Igor Pylypiv , Terrence Adams Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Igor Pylypiv v6.2 commit 811be570a9a8 ("scsi: pm8001: Use sas_ata_device_link_abort() to handle NCQ errors") removed duplicate NCQ EH from the pm80xx driver and started relying on libata to handle the NCQ errors. The PM8006 controller has a special EH sequence that was added in v4.15 commit 869ddbdcae3b ("scsi: pm80xx: corrected SATA abort handling sequence."). The special EH sequence issues a hard reset to a drive before libata EH has a chance to read the NCQ log page. Libata EH gets confused by empty NCQ log page which results in HSM violation. The failed command gets retried a few times and each time fails with the same HSM violation. Finally, libata decides to disable NCQ due to subsequent HSM vioaltions. To avoid unwanted hard resets we can initiate abort all from the driver to prevent libsas EH from calling lldd_abort_task()/pm8001_abort_task(). Signed-off-by: Igor Pylypiv Signed-off-by: Terrence Adams --- drivers/scsi/pm8001/pm8001_hwi.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_= hwi.c index dec1e2d380f1..f19f76dc6e1c 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1672,7 +1672,18 @@ void pm8001_work_fn(struct work_struct *work) break; case IO_XFER_ERROR_ABORTED_NCQ_MODE: { + struct pm8001_hba_info *pm8001_ha =3D pw->pm8001_ha; dev =3D pm8001_dev->sas_device; + /* + * pm8001_abort_task() issues a hard reset to a drive + * before libata EH has a chance to read the NCQ log page. + * + * Initiate abort all from the driver to prevent libsas EH + * from calling lldd_abort_task() / pm8001_abort_task(). + */ + if (pm8001_ha->chip_id =3D=3D chip_8006) + sas_execute_internal_abort_dev(dev, 0, NULL); + sas_ata_device_link_abort(dev, false); } break; --=20 2.45.2.505.gda0bf45e8d-goog