kernel version: 2.6.29.6
Alan Cox wrote:
On Mon, 10 Jan 2011 13:23:46 -0800
Donna Rigas <donna.rigas@xxxxxxxxx> wrote:
Can anyone tell me how to change the rx and tx fifo sizes for a USB
virtual serial port? We're trying to run at high effective baud rates
(would like to utilize the full 12mbps of our USB 1.1 device), and
servicing a read routine at 16Hz. Initial investigations reveal what
looks like a buffer size of PAGE_SIZE (but we may have looked in the
wrong area), or 4K. We can't easily service the read routine faster than
16Hz, which if our math is right, that means we'll average 7500 byte
reads if we utilize 100% of the throughput. On the host side, we're
using the cdc_acm driver, and on the device side (if it matters at all),
we're using LPCUSB.
Which kernel version ?
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