On 02/01/2014 10:04 AM, Greg Kroah-Hartman wrote:
On Sat, Feb 01, 2014 at 09:42:57AM -0500, Peter Hurley wrote:
You can't use low_latency; only devices that receive data in
non-interrupt contexts (such as USB serial devices) can.
USB serial devices get their data in interrupt context, until we fix USB
callbacks to be threaded, which might happen one day...
Oh yeah, you're right.
Weird. Back when I was writing the Firewire serial driver,
I experimented with low_latency some but decided it wasn't worth
the hassle. I could swear I was copying from some USB serial
driver...
Regards,
Peter Hurley
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