Hi Mark, > The information in /sys/kernel/debug/usb/devices about the MT7922U > Bluetooth device is listed as the below. > > T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 18 Spd=480 MxCh= 0 > D: Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 > P: Vendor=0e8d ProdID=7922 Rev= 1.00 > S: Manufacturer=MediaTek Inc. > S: Product=Wireless_Device > S: SerialNumber=000000000 > C:* #Ifs= 3 Cfg#= 1 Atr=e0 MxPwr=100mA > A: FirstIf#= 0 IfCount= 3 Cls=e0(wlcon) Sub=01 Prot=01 > I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=125us > E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms > I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms > I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms > I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms > I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms > I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms > I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms > I: If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb > E: Ad=83(I) Atr=01(Isoc) MxPS= 63 Ivl=1ms > E: Ad=03(O) Atr=01(Isoc) MxPS= 63 Ivl=1ms > I:* If#= 2 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) > E: Ad=8a(I) Atr=03(Int.) MxPS= 64 Ivl=125us > E: Ad=0a(O) Atr=03(Int.) MxPS= 64 Ivl=125us > I: If#= 2 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) > E: Ad=8a(I) Atr=03(Int.) MxPS= 512 Ivl=125us > E: Ad=0a(O) Atr=03(Int.) MxPS= 512 Ivl=125us > > Signed-off-by: mark-yw.chen <mark-yw.chen@xxxxxxxxxxxx> > --- > drivers/bluetooth/btusb.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c > index 41e7c9f28d82..fe52f7b9548e 100644 > --- a/drivers/bluetooth/btusb.c > +++ b/drivers/bluetooth/btusb.c > @@ -2821,6 +2821,8 @@ static int btusb_mtk_setup(struct hci_dev *hdev) > case 0x7668: > fwname = FIRMWARE_MT7668; > break; > + case 0x7922: > + fallthrough; The fallthrough is not needed. Multiple case labels in a row are fine. Regards Marcel
