Am 08.11.2012 21:19, schrieb Devin Heitmueller: > On Thu, Nov 8, 2012 at 1:11 PM, Frank Schäfer > <fschaefer.oss@xxxxxxxxxxxxxx> wrote: >> By default, isoc transfers are used if possible. >> With the new module parameter, bulk can be selected as the >> preferred USB transfer type. > Hi Frank, > > Does your device actually expose both isoc and bulk endpoints? If I > recall from the datasheet, whether isoc or bulk mode is provided is > not actually configurable from the driver. The EEPROM dictates how > the endpoint map gets defined, and hence it's either one or the other. > If that is indeed the case, then we don't need a modprobe option at > all (since would never actually be user configurable), and we should > just add a field to the board definition to indicate that bulk should > be used for that product. > > Devin > Hi Devin, at least the "Silvercrest Webcam 1.3mpix" (board 71) exposes both endpoint types (0x82=isoc and 0x84=bulk). Regards, Frank -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
