bnxt_en: Fix possible crash in bnxt_hwrm_ring_free() under error conditions.
If we encounter errors during open and proceed to clean up, bnxt_hwrm_ring_free() may crash if the rings we try to free have never been allocated. bnxt_cp_ring_for_rx() or bnxt_cp_ring_for_tx() may reference pointers that have not been allocated. Fix it by checking for valid fw_ring_id first before calling bnxt_cp_ring_for_rx() or bnxt_cp_ring_for_tx(). Fixes: 2c61d211 ("bnxt_en: Add helper functions to get firmware CP ring ID.") Signed-off-by:Michael Chan <michael.chan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
f9099d61
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