Messages in this thread | | | Date | Thu, 21 Jan 1999 18:42:33 -0500 (EST) | From | "Theodore Y. Ts'o" <> | Subject | Re: (solved) Serial Problem in 2.2.0-pres |
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Date: Wed, 20 Jan 1999 03:37:14 -0500 (EST) From: Shannon Aldinger <god@yinyang.hjsoft.com>
Apparently, the recent 2.1.x kernels, and the 2.2.0-pres are less tolerent of serial ports using the same irq. After checking my inittab, and commenting out the getty that was sitting on ttyS3, all was well with ttyS1 again. All the 2.0.x kernels had no problems accessing ttyS1, with the getty running on ttyS3.
That's actually a matter of how the serial driver is configured. If you explicitly allow IRQ sharing, then the serial driver will allow it. But since most hardware doesn't work with IRQ sharing (certainly normal COM 1/2/3/4 hardware does not work with IRQ sharing), and the code to support IRQ sharing took up valuable memory, it's not a compile-time option in the kernel.
- Ted
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