hi greg,
thanks. ya this is the contents of the file /proc/bus/usb/devices. there are these isocronous endpoints. so i can be sure that probe is getting called more that once because of the number of interfaces. T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 0.00 S: Product=USB UHCI Root Hub S: SerialNumber=d000 C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(unk. ) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0c10 ProdID=0000 Rev= 0.00 S: Manufacturer=SiW S: Product=SiW S: SerialNumber=7363007A0300 C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=200mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(unk. ) Sub=01 Prot=01 Driver=(none)E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl= 1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=(none)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(unk. ) Sub=01 Prot=01 Driver=(none)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(unk. ) Sub=01 Prot=01 Driver=(none)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(unk. ) Sub=01 Prot=01 Driver=(none)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(unk. ) Sub=01 Prot=01 Driver=(none)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(unk. ) Sub=01 Prot=01 Driver=(none)E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl= 1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl= 1ms /Ravi
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