[ltp] PCMCIA Interrupt Nastiness

[Andrew Barr]

With recent kernels, I cannot use CompactFlash memory cards (in a PCMCIA 
sleeve) without adding disable_clkrun=1 to the module parameters for 
yenta_socket. This seems to have a nasty side effect (not sure if it's 
related): whenever there is I/O to the card, the system is very sluggish, 
including peripherals like the mouse pointer--it jumps around rather 
annoyingly when you try to move it (Trackpoint/Touchpad). I'm guessing the 
PCMCIA controller is sending a flood of interrupts that are crowding out 
other peripherals. Does anyone know what the deal is with PCMCIA recently and 
if there is anything I can do to fix it? Kernel is 2.6.17.3.

Incidentally, I used a CardBus WLAN card (rt2500) today in ad-hoc mode without 
noticeable issues. Usage was not too heavy however.

-- 
Andrew Barr | http://www.oakcourt.dyndns.org/~andrew/