Bug 190279

Summary: Serial ports again reduced to 4 instead of 32
Product: [Fedora] Fedora Reporter: Jørgen Thomsen <joergen>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED NOTABUG QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 5CC: pfrields, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2006-05-07 00:26:46 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Jørgen Thomsen 2006-04-30 03:53:33 UTC
Description of problem:
I just upgraded from FC3 to FC5 and now again I have the same problem !
See bug 143927
The kernel only allows for 4 serial ports instead of 32 as in previous releases.
RAM is not so scarce these days that you have to save a few bytes in a table, so 
why not keep a reasonable high number so as to not making problems for people.

Version-Release number of selected component (if applicable):
2.6.16-1.2096_FC5

How reproducible:
Every time

Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:

Comment 1 Jørgen Thomsen 2006-04-30 18:07:28 UTC
I also noticed, that there was an error in registering serial port no. 4, which 
I believe is reported by somebody else, too.
 

Comment 2 Jørgen Thomsen 2006-05-01 21:56:09 UTC
I got the kernel sources and changed the .config file (based on the i686 
version) with menuconfig in 3 places: raised the runtime serial ports to 32, 
changed the CPU to Athlon and set the kernel debug parameter to 'n'.

It apparently solved the problem, but now I am definitely missing the listing 
of found tty devices in /var/log/dmesg. How do I get this back without 
compiling a whole lot of debug code into the kernel ?


Comment 3 Dave Jones 2006-05-07 00:26:46 UTC
you don't need to rebuild the kernel, you can boot with 8250.nr_uarts=32 or
however many you need.