readw() access

Svein Erling Seldal (Svein.Seldal@edcom.no)
Wed, 1 Aug 2001 22:33:44 +0200


Hello,

I'm trying to port a driver from 2.2.x to 2.4.x where I previously has used
readw() to read the contents of the memory-adresses 0x408-0x40c (Where the
BIOS gives you the adr. for the par-ports.) But on 2.4.x readw(0x408) Oops:

"Unable to handle kernel NULL pointer dereference at virtual address
00000408"

How do you read a memory-address like this?

Svein Erling Seldal

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