On Mon, Aug 03, 2015 at 04:44:07PM +0900, arun k wrote: > Hi , > > I have a trouble with using usb serial generic device. > I am using USB - Generic Serial driver for communicating with my usb > device and my embedded device. Please don't use the "generic" driver, it's slow and not the best to use. > My usb device sending data at a rate of 409600 bytes/sec, and in host > side application I tried to read 16384 bytes in one read. But the read > size returning is always 4095 The tty layer is limiting you, just keep reading in a loop until you run out of data, you should not ever expect to read a specific number of bytes from a tty device at a time, the read call will tell you the number that was read properly. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
