Bug 184212 - make CONFIG_SERIAL_8250_NR_UARTS bigger please
make CONFIG_SERIAL_8250_NR_UARTS bigger please
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
x86_64 Linux
medium Severity medium
: ---
: ---
Assigned To: Dave Jones
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2006-03-07 07:33 EST by Tom Horsley
Modified: 2015-01-04 17:25 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2006-03-07 15:34:26 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

  None (edit)
Description Tom Horsley 2006-03-07 07:33:55 EST
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:


Steps to Reproduce:
1. Install board
2. See only 4 /dev/ttyS* devices show up.
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 15:34:26 EST
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 18:31:46 EST
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 :-).

Note You need to log in before you can comment on or make changes to this bug.