From: "Jason Dravet" <dravet@hotmail.com>
To: linux-kernel@vger.kernel.org
Subject: wrong number of serial port detected
Date: Wed, 07 Dec 2005 09:44:29 -0600 [thread overview]
Message-ID: <BAY103-F1629FE16D5F4DBB7B16524DF430@phx.gbl> (raw)
Hello,
I have a question about the way serial ports are detected. Since I started
using udev last year I noticed 32 ttySxx nodes in my /dev directory. I
checked dmesg and the serial port driver was detecting 32 ports. Here is
the line from dmesg:
Serial: 8250/16550 driver $Revision: 1.90 $ 32 ports, IRQ sharing enabled
In fact I don't have 32 ports. I have two serial ports on the motherboard,
both of which are disabled in the BIOS. I opened a bug in RedHat's bugzilla
system and it was promptly closed saying this was unfixable. I was told
that the kernel loaded the maximum number of ports supported by the serial
port driver. I asked why and I have not received a response. So I ask this
mailing list Can the kernel detect the proper number of serial ports or not?
Thanks,
Jason
next reply other threads:[~2005-12-07 15:44 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-07 15:44 Jason Dravet [this message]
2005-12-07 15:50 ` Russell King
2005-12-07 19:59 ` Jason Dravet
2005-12-07 21:15 ` Russell King
2005-12-07 21:28 ` Xavier Bestel
2005-12-07 21:31 ` Russell King
2005-12-07 21:38 ` Russell King
2005-12-07 23:03 ` Dave Jones
2005-12-07 23:46 ` Russell King
2005-12-08 0:50 ` Dave Jones
2005-12-08 3:09 ` Dave Jones
2006-01-07 16:46 ` Russell King
2006-01-07 21:05 ` Dave Jones
2006-01-08 1:23 ` Jason Dravet
2006-01-08 9:08 ` Russell King
2005-12-08 3:02 Jason Dravet
2005-12-08 10:54 ` Russell King
2005-12-09 14:37 ` Jason Dravet
2005-12-09 17:27 ` Russell King
2005-12-09 19:54 ` Bjorn Helgaas
2005-12-10 1:46 ` Jason Dravet
2005-12-10 10:35 ` Russell King
2005-12-10 14:24 ` Jason Dravet
2005-12-10 15:46 ` Russell King
2005-12-10 17:56 ` Jason Dravet
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