IB/mlx4: Fix shutdown crash accessing a non-existent bitmap

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Commit cfcde11c3d ("IB/mlx4: Use flow counters on IBoE ports") added
code that sets elements of counters[] to -1 if no counter is allocated,
but then goes ahead and passes every entry to mlx4_counter_free() on
shutdown.  This is a bad idea, especially if MLX4_DEV_CAP_FLAG_COUNTERS
isn't set so there isn't even an underlying bitmap to free from.

Tested-by: Sean Hefty <sean.hefty@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>

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This commit is contained in:

Roland Dreier 2011-12-06 10:47:37 -08:00

parent 5611cc4572

commit 4af3ce0de0

1 changed files with 4 additions and 2 deletions

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drivers/infiniband/hw/mlx4/main.c

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