staging/rdma/hfi1: Fix downgrade race

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A link downgrade can race with link up. Avoid the race
in two ways. First, by having the downgrade application logic
take the link state mutex for all of its checking. Second, by
waiting for the link to move out of the going up state.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dean Luick 2015-11-16 21:59:24 -05:00 • committed by Greg Kroah-Hartman

parent 699f685569

commit 323fd785e3

1 changed files with 24 additions and 7 deletions

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drivers/staging/rdma/hfi1/chip.c

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