Problems with the pl2303 USB-serial driver

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Hi.  I work on a product which, sadly, is stuck on a vendor kernel based
on 2.6.37.

I use a usb-to-serial dongle which uses the pl2303 driver.

I have a problem in that after some use (after a while of 'normal' use,
and after up to a couple of minutes of quite intensive use), the driver
stops reading data from the serial port, but will happily keep writing
to it.

I've tried debugging it using the dbg() stuff in the usb drivers, but so
far to no avail.  I haven't yet tested it on a newer kernel yet, but I
guess I can set up something on my own workstation.  My target hardware
doesn't support newer kernels.

Obviously, a bug in 2.6.37 isn't too interesting for anyone, but I was
wondering if anyone's seen similar reports, or have noticed commits that
might've fixed it.

I looked through the git log without seeing anything that stood out.

(Well, except 969e3033ae7733a0, perhaps, but I've applied it, and it
still breaks.)

-- 
Henrik Grindal Bakken <hgb@xxxxxxxxxx>
PGP ID: 8D436E52
Fingerprint: 131D 9590 F0CF 47EF 7963  02AF 9236 D25A 8D43 6E52
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