From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 8D083446055; Thu, 30 Jul 2026 15:32:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785425573; cv=none; b=Om2vQTu+purhl+HbgRXj1qZiIUci7NMFoFNzRDHaUNlElU2olS8kTocPOaSbYCVigph74fOPiVyy9Ih8wG4XWZ1bnkx7Ko6q8CdKWQUeUY6ly/WT2XWFFUmA07ln4WbSvrCHPmhdbjBoc2tmLDIjzAyJCbBL00TXYA8T6ov8f5I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785425573; c=relaxed/simple; bh=Y9Et4A0Kz/GkD19kvMqUYo+Up8uYqHAqYbvTC1eWEg8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UbgWGNaNl21+SWQ+VXyvx7fPZNdAuTUQh75W4vbajtQsyrDZRJs90CWSaKshrkiLr9+apdeDNS+RVZPK5ECeQ4VflgZc8axL0hPBKIovcCks2G2eUu8E3XBB5qfFuA8vuHdBqXhPRRmhEuyuLKRNM1tDYE69iX0sJ6zgIvMF3Z0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=K6KEeZGA; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="K6KEeZGA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6AF171F00A3A; Thu, 30 Jul 2026 15:32:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785425572; bh=aTVoTfClVCSQ3RSRQj/dc6dNdX6DuWwkCnvneuH90Qc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=K6KEeZGAnxrgFZnNYpNEWeNzFXYzgtjo4S1K9fNeR6MX+mKTmJpYVfAtRkZvYhw7x IHLhsfykeGW4NzpofzhiO1Cli1MUjBxCHa7rqEAjWOhJI7eoAK0br7WorJvScScE9r byX3bLqceiinPgJJZbyvZ9JDG04fyzvK7xc9foj4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ai Chao , stable , Huang Wei , Alan Stern Subject: [PATCH 6.12 116/602] USB: storage: add NO_ATA_1X quirk for Longmai USB Key Date: Thu, 30 Jul 2026 16:08:28 +0200 Message-ID: <20260730141438.426363263@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141435.976815864@linuxfoundation.org> References: <20260730141435.976815864@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Huang Wei commit 3b4ca2e01c1dd8c00b675b794732945f460a471b upstream. 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=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 12 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=06 Prot=50 MxPS=64 #Cfgs= 1 P: Vendor=04b4 ProdID=b708 Rev= 1.00 S: Manufacturer=Longmai Technologies S: Product=USB Key C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms Reported-by: Ai Chao Cc: stable Signed-off-by: Huang Wei Acked-by: Alan Stern Link: https://patch.msgid.link/20260716033341.2830872-1-huangwei@kylinos.cn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -395,6 +395,13 @@ UNUSUAL_DEV( 0x04b3, 0x4001, 0x0110, 0x USB_SC_DEVICE, USB_PR_CB, NULL, US_FL_MAX_SECTORS_MIN), +/* 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), + /* * Reported by Simon Levitt * This entry needs Sub and Proto fields