On Thu, Jul 14, 2022 at 06:20:37PM +0800, sdlyyxy wrote: > From: Yan Xinyu <sdlyyxy@xxxxxxxxxxx> > > This patch adds support for OPPO R11 USB diag serial port to option > driver. This phone uses Qualcomm Snapdragon 660 SoC. > > usb-devices output: > T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 10 Spd=480 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=22d9 ProdID=276c Rev=04.04 > S: Manufacturer=OPPO > S: Product=SDM660-MTP _SN:09C6BCA7 > S: SerialNumber=beb2c403 > C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA > I: If#=0x0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option I do not think this has an option usb-serial chip in the device, this is a phone with a debug port instead. > I: If#=0x1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs What userspace program is bound to this endpoint? > > Signed-off-by: Yan Xinyu <sdlyyxy@xxxxxxxxxxx> > --- > drivers/usb/serial/option.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c > index de59fa919540..cf65cb84c3ca 100644 > --- a/drivers/usb/serial/option.c > +++ b/drivers/usb/serial/option.c > @@ -573,6 +573,10 @@ static void option_instat_callback(struct urb *urb); > #define WETELECOM_PRODUCT_6802 0x6802 > #define WETELECOM_PRODUCT_WMD300 0x6803 > > +/* OPPO products */ > +#define OPPO_VENDOR_ID 0x22d9 > +#define OPPO_PRODUCT_R11 0x276c > + > > /* Device flags */ > > @@ -2155,6 +2159,7 @@ static const struct usb_device_id option_ids[] = { > { USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1404, 0xff) }, /* GosunCn GM500 RNDIS */ > { USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1405, 0xff) }, /* GosunCn GM500 MBIM */ > { USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1406, 0xff) }, /* GosunCn GM500 ECM/NCM */ > + { USB_DEVICE_AND_INTERFACE_INFO(OPPO_VENDOR_ID, OPPO_PRODUCT_R11, 0xff, 0xff, 0x30) }, This does not look correct, sorry. Try using the usbserial generic driver instead to transmit and recieve? thanks, greg k-h