IB/ipath: Prevent random program use of diags interface

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To prevent random utility reads and writes of the diag interface to the
chip, we first require a handshake of reading from offset 0 and writing
to offset 0 before any other reads or writes can be done through the
diags device.   Otherwise chip errors can be triggered.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

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Bryan O'Sullivan 2007-03-15 14:45:10 -07:00 • committed by Roland Dreier

parent f5408ac7cc

commit 490462c268

1 changed files with 10 additions and 1 deletions

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11

drivers/infiniband/hw/ipath/ipath_diag.c

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