From nobody Sat Jul 25 17:34:02 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1B8553D1712; Wed, 15 Jul 2026 08:45:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784105153; cv=none; b=EiTCPRrUS9StnbP/3yOpZvBAJvKkjrPWgL/UqBJMjNhIjtOkyOcWN7MIFgZZwHnKsQNWLg0MXFxZXoHWfokjArmozjvPriKK739Y3sEM7YbrAtKFmV0u02pifs1vFsmuUfjlvLCIrlYW4bxBY4St+jiajt98IT9DqAHUWLywj0U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784105153; c=relaxed/simple; bh=AzgJjCdwPtmtK3JqkU6sICbmg5GFTI9SZ0sXKIfsMAA=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=K6t7GEBR/KlC8nDFktUVnmjWS90f/Jhuqz+FoIfzh7rfX5vFbAYt5gK/8ZFoIMmbRhLXA50udkj4bm0MuhI2BM+FHeK0Ue2aefRIwQUCI2fLek9oxBv6ox2scGc94mje3COn/LfQnqMm5hKpyXgLM9P25tyVKzKXWNtY21vTVZQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: 8bed4c52802911f1aa26b74ffac11d73-20260715 X-CTIC-Tags: HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME, HR_CC_NO_NAME, HR_CTE_8B HR_CTT_MISS, HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME HR_SJ_DIGIT_LEN, HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM HR_SJ_PHRASE, HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT HR_TO_NO_NAME, IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_UNTRUSTED SA_UNFAMILIAR, SN_UNTRUSTED, SN_UNFAMILIAR, SPF_NOPASS, DKIM_NOPASS DMARC_NOPASS, CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO GTI_C_BU, AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:6a8b289b-761f-4faa-8b12-b80c95188a85,IP:10, URL:0,TC:0,Content:0,EDM:25,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:35 X-CID-INFO: VERSION:1.3.12,REQID:6a8b289b-761f-4faa-8b12-b80c95188a85,IP:10,UR L:0,TC:0,Content:0,EDM:25,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:35 X-CID-META: VersionHash:e7bac3a,CLOUDID:b99e614d123fd84417243fa1a6ee8614,BulkI D:260715162956I7MWH7Z7,BulkQuantity:1,Recheck:0,SF:10|38|66|78|102|127|850 |865|898,TC:nil,Content:0|15|50,EDM:5,IP:-2,URL:0,File:nil,RT:nil,Bulk:40, QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 ,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: 8bed4c52802911f1aa26b74ffac11d73-20260715 X-User: huangwei@kylinos.cn Received: from localhost.localdomain [(112.64.161.44)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 1354600505; Wed, 15 Jul 2026 16:45:35 +0800 From: Huang Wei To: stern@rowland.harvard.edu, gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, usb-storage@lists.one-eyed-alien.net, linux-kernel@vger.kernel.org, Huang Wei , Ai Chao Subject: [PATCH] USB: storage: add NO_ATA_1X quirk for Longmai USB Key Date: Wed, 15 Jul 2026 16:45:30 +0800 Message-Id: <20260715084530.2375253-1-huangwei@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The Longmai Technologies USB Key (0x04b4:0xb708) advertises itself as a SCSI/Bulk-only mass storage device but does not correctly handle ATA pass-through commands. When such a command (ATA_12 or ATA_16) is sent to the device it fails to respond and the transfer eventually times out, leaving the device unusable. Add an unusual_devs entry for this device that sets the US_FL_NO_ATA_1X flag, so usb-storage short-circuits ATA pass-through commands and returns INVALID COMMAND OPERATION CODE (0x20 0x05 0x24 0x00) instead of forwarding them to the device. Information about the device in /sys/kernel/debug/usb/devices: T: Bus=3D02 Lev=3D01 Prnt=3D01 Port=3D01 Cnt=3D01 Dev#=3D 12 Spd=3D480 Mx= Ch=3D 0 D: Ver=3D 2.00 Cls=3D00(>ifc ) Sub=3D06 Prot=3D50 MxPS=3D64 #Cfgs=3D 1 P: Vendor=3D04b4 ProdID=3Db708 Rev=3D 1.00 S: Manufacturer=3DLongmai Technologies S: Product=3DUSB Key C:* #Ifs=3D 1 Cfg#=3D 1 Atr=3D80 MxPwr=3D100mA I:* If#=3D 0 Alt=3D 0 #EPs=3D 2 Cls=3D08(stor.) Sub=3D06 Prot=3D50 Driver= =3Dusb-storage E: Ad=3D81(I) Atr=3D02(Bulk) MxPS=3D 512 Ivl=3D0ms E: Ad=3D02(O) Atr=3D02(Bulk) MxPS=3D 512 Ivl=3D0ms Reported-by: Ai Chao Signed-off-by: Huang Wei --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusu= al_devs.h index cb03d3615614..ef77ab6fd42f 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -2379,6 +2379,13 @@ UNUSUAL_DEV( 0xed10, 0x7636, 0x0001, 0x0001, "Digital MP3 Audio Player", USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NOT_LOCKABLE ), =20 +/* Reported by Ai Chao */ +UNUSUAL_DEV( 0x04b4, 0xb708, 0x0000, 0xffff, + "Longmai Technologies", + "USB Key", + USB_SC_SCSI, USB_PR_BULK, NULL, + US_FL_NO_ATA_1X), + /* Unusual uas devices */ #if IS_ENABLED(CONFIG_USB_UAS) #include "unusual_uas.h" --=20 2.25.1