Re: [PATCH] psmouse: fix mouse hotplugging

From: Ian Stirling
Date: Thu Apr 22 2004 - 17:01:53 EST

Maciej W. Rozycki wrote:
On Thu, 22 Apr 2004, Horst von Brand wrote:

This patch fixes hotplugging of PS/2 devices on hardware which don't
support hotplugging of PS/2 devices. In other words, most desktop


I have seen "hoplugging of mice" fry PS/2 ports, and heard of motherboards
killed that way.

For older systems, a fuse would often blow on these ports, which
depending on the implementation would require a power cycle or a soldering
iron. Then one of those PCxx specs from Microsoft required the PS/2 ports
to support hot-plugging, so chances are it may pretty safe with recent

Even for relatively newer kit, wierd stuff can happen.
I recall one keyboard/athlon 500 system that would reboot 10s after the keyboard
was plugged in, about 1% of the time.
Probably a KBC code bug, but unfixable.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at