Bug 184212 - make CONFIG_SERIAL_8250_NR_UARTS bigger please
Summary: make CONFIG_SERIAL_8250_NR_UARTS bigger please
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 5
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Dave Jones
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2006-03-07 12:33 UTC by Tom Horsley
Modified: 2015-01-04 22:25 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2006-03-07 20:34:26 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Tom Horsley 2006-03-07 12:33:55 UTC
Description of problem:

An 8 port serial board won't work without recompiling kernel to bump the
number of "non-legacy" serial ports supported. This particular board is
a vscom board from byterunner, but with the kernel insisting there are no
more than 4 serial ports ever, I'm sure other boards would have the same
problem. These boards are not that uncommon and I don't see how it could
hurt anything to allow then to work without having to rebuild the kernel.

Version-Release number of selected component (if applicable):


How reproducible:

Always

Steps to Reproduce:
1. Install board
2. See only 4 /dev/ttyS* devices show up.
3.
  
Actual results:


Expected results:

All 8 of 'em.

Additional info:

I put x86_64 in the platform field, but I imagine this is common to
all platforms.

Comment 1 Dave Jones 2006-03-07 20:34:26 UTC
it's runtime configurable by booting with 8250.nr_uarts=8 (or however many you
need).  In the future, we'll find a way to make this automatic based upon
hardware detection.


Comment 2 Tom Horsley 2006-03-07 23:31:46 UTC
Thanks muchly. I'll see if I can get byterunner to put this info on their
support site where folks like me can find it :-). Works great, I can talk
to all my serial ports now after adding the boot parameter (much simpler than
rebuilding the kernel :-).


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