atl1: explain 32-bit DMA restriction

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Document the fact that atl1 uses a single shared register for the high 32
bits of 64-bit DMA addresses, making 64-bit DMA more trouble than it's worth.

Signed-off-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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Chris Snook 2007-09-20 15:57:15 -04:00 • committed by David S. Miller

parent 01faccbf86

commit cdcc520d7b

1 changed files with 8 additions and 2 deletions

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drivers/net/atl1/atl1_main.c

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