On Sat, 17 Oct 2015 00:21:44 -0400
Michael Chan <mc...@broadcom.com> wrote:
> +static inline u32 bnxt_tx_avail(struct bnxt *bp, struct bnxt_tx_ring_info
> *txr)
> +{
> + /* Tell compiler to fetch tx indices from memory. */
> + barrier();
Actually, you are telling compiler not to reorder. Which may not
be sufficient on some platforms.
> + return bp->tx_ring_size -
> + ((txr->tx_prod - txr->tx_cons) & bp->tx_ring_mask);
> +}
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