linux-kernel - [PATCH 5.4 046/222] USB: serial: option: add support for Quectel RM500Q in QDL mode

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Message-Id: <20200122092836.857435691@linuxfoundation.org>
Date:   Wed, 22 Jan 2020 10:27:12 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Reinhard Speyerer <rspmn@...or.de>,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH 5.4 046/222] USB: serial: option: add support for Quectel RM500Q in QDL mode

From: Reinhard Speyerer <rspmn@...or.de>

commit f3eaabbfd093c93d791eb930cc68d9b15246a65e upstream.

Add support for Quectel RM500Q in QDL mode.

T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 24 Spd=480  MxCh= 0
D:  Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=2c7c ProdID=0800 Rev= 0.00
S:  Manufacturer=Qualcomm CDMA Technologies MSM
S:  Product=QUSB_BULK_SN:xxxxxxxx
S:  SerialNumber=xxxxxxxx
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=  2mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=10 Driver=option
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

It is assumed that the ZLP flag required for other Qualcomm-based
5G devices also applies to Quectel RM500Q.

Signed-off-by: Reinhard Speyerer <rspmn@...or.de>
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Johan Hovold <johan@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/serial/option.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1107,6 +1107,8 @@ static const struct usb_device_id option
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EM12, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0xff, 0x30) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0, 0) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0xff, 0x10),
+	  .driver_info = ZLP },
 
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) },
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) },