Re: [SOLVED] Serial buffer corruption [was Re: FTDI usb-serial possible bug]
From: Oliver Neukum
Date: Sat May 05 2007 - 12:47:27 EST
Am Samstag, 5. Mai 2007 18:08 schrieb Paul Fulghum:
> If the line discipline throttles the driver input,
> the cdc-acm driver stops giving data to the tty buffering
> and instead stores them internally.
So do usb serial drivers.
> In the serial driver this usually just results in dropping
> RTS to signal the remote end to stop sending. The serial
This may take considerable time in the case of usb devices.
> driver always immediately gives receive data to the tty buffering
> without regard to the throttled state.
>
> I would argue that cdc-acm should do the same as the serial driver.
Has this been tested?
If so we could reduce the complexity of the throtteling logic in the usb
drivers.
Regards
Oliver
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