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 DD7442D7393; Thu, 30 Jul 2026 15:02:01 +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=1785423723; cv=none; b=FDF+Wnxpr2hyJXDG7+OdTJW0Lkds3UlMNiWPVaXVp65Lvo41GfS7mOUWwIHCLSo1f9JLeFehIgn9xQ7aRn0sxQz/ITEBbTLWPbhbQTqDU5XGA8bsZqt2AVjQrB1mVOwtMOghJ72QjfVX02u3DPGDz6pBIGsrvQhVSfNUrH0S5CU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785423723; c=relaxed/simple; bh=f1kmt4mWIjfHzMR3NbNN2W3PCalV13MX1vjBgg9sg90=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ROh3bsZumanJaav0EBw6ETgE1oaXjSkdA+eQhketD34yNAX8FtKZYe7+gDxg+WTEXKOoVsWCZnV0G03kjRW6uDmqLm0K8eqrn2j6oiXkcWMSU01ej22u6Ib13ah+Vnc5gT0t39FCD5I3SsF78q9MenckQ4f+Tw66MoY7rz8KxbM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JwJJ3bKS; 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="JwJJ3bKS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 442621F000E9; Thu, 30 Jul 2026 15:02:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785423721; bh=FlucsVLMzBYrdhAXRWtTvgdYrnYRr93GfWKdMlEeB5I=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=JwJJ3bKSpKoYHoDDPFAI1BXIAK9xZZzdbdct3i8qITFrrHzxEFk+t6a4kJ0lSEdwt uZYPoM5ua/zCjOpTg2tB6e12ooUKWyBCnRrunyF3Eg7KCtM0EZHmlChSXQkTZDCFSJ FqcdeIhq2y3UPvCqgOgzz2XQ+eiLsr6O4nYqJ0KE= 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 6.18 143/675] USB: storage: add NO_ATA_1X quirk for Longmai USB Key Date: Thu, 30 Jul 2026 16:07:53 +0200 Message-ID: <20260730141448.176698747@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141445.110192266@linuxfoundation.org> References: <20260730141445.110192266@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 6.18-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