lkml.org 
[lkml]   [2005]   [Jan]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRE: [2.6.10-bk8] [SERIAL] dropping chars when > 512
Date
From
> Unless this is a typo, I think you'll find that status = 1 means the
> FIFOs have been turned off. Which would flush any data in the FIFOs.
> Which would explain the missing data.
>
> ..Stu

Nope, not a typo.
I'm no expert, but i thought 'status' shows the LSR when an interrupt
occurs, and LSR = 1 indicates 'data available', while LSR = 60 indicates
transmitter status (40 = THR empty, 20 = THR + shift register empty)?
so status = 1 indicates an interrupt occurs while transmitter is busy?

I think this is related to tty flip buffer full (size = 512), and no
low_latency setting (which, if set, hangs the 2.6 SMP kernel). but i'm
not expert enough with serial to know a fix.
thanks,
tim
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:09    [from the cache]
©2003-2011 Jasper Spaans