From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Schwab Subject: [PATCH] net/de4x5: remove undefined operations Date: Sat, 11 Sep 2010 13:08:58 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: Grant Grundler , Kyle McMartin Return-path: Received: from mail-out.m-online.net ([212.18.0.10]:46132 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750967Ab0IKLJG (ORCPT ); Sat, 11 Sep 2010 07:09:06 -0400 Sender: netdev-owner@vger.kernel.org List-ID: Modifying an object twice without an intervening sequence point is undefined. Signed-off-by: Andreas Schwab --- drivers/net/tulip/de4x5.c | 18 +++++++++--------- 1 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c index 75a64c8..4f75030 100644 --- a/drivers/net/tulip/de4x5.c +++ b/drivers/net/tulip/de4x5.c @@ -1448,7 +1448,7 @@ de4x5_sw_reset(struct net_device *dev) status = -EIO; } - lp->tx_new = (++lp->tx_new) % lp->txRingSize; + lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; lp->tx_old = lp->tx_new; return status; @@ -1506,7 +1506,7 @@ de4x5_queue_pkt(struct sk_buff *skb, struct net_device *dev) lp->stats.tx_bytes += skb->len; outl(POLL_DEMAND, DE4X5_TPD);/* Start the TX */ - lp->tx_new = (++lp->tx_new) % lp->txRingSize; + lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; if (TX_BUFFS_AVAIL) { netif_start_queue(dev); /* Another pkt may be queued */ @@ -1657,7 +1657,7 @@ de4x5_rx(struct net_device *dev) } /* Change buffer ownership for this frame, back to the adapter */ - for (;lp->rx_old!=entry;lp->rx_old=(++lp->rx_old)%lp->rxRingSize) { + for (;lp->rx_old!=entry;lp->rx_old=(lp->rx_old + 1)%lp->rxRingSize) { lp->rx_ring[lp->rx_old].status = cpu_to_le32(R_OWN); barrier(); } @@ -1668,7 +1668,7 @@ de4x5_rx(struct net_device *dev) /* ** Update entry information */ - lp->rx_new = (++lp->rx_new) % lp->rxRingSize; + lp->rx_new = (lp->rx_new + 1) % lp->rxRingSize; } return 0; @@ -1726,7 +1726,7 @@ de4x5_tx(struct net_device *dev) } /* Update all the pointers */ - lp->tx_old = (++lp->tx_old) % lp->txRingSize; + lp->tx_old = (lp->tx_old + 1) % lp->txRingSize; } /* Any resources available? */ @@ -1801,7 +1801,7 @@ de4x5_rx_ovfc(struct net_device *dev) for (; (s32)le32_to_cpu(lp->rx_ring[lp->rx_new].status)>=0;) { lp->rx_ring[lp->rx_new].status = cpu_to_le32(R_OWN); - lp->rx_new = (++lp->rx_new % lp->rxRingSize); + lp->rx_new = (lp->rx_new + 1) % lp->rxRingSize; } outl(omr, DE4X5_OMR); @@ -1932,7 +1932,7 @@ set_multicast_list(struct net_device *dev) load_packet(dev, lp->setup_frame, TD_IC | PERFECT_F | TD_SET | SETUP_FRAME_LEN, (struct sk_buff *)1); - lp->tx_new = (++lp->tx_new) % lp->txRingSize; + lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; outl(POLL_DEMAND, DE4X5_TPD); /* Start the TX */ dev->trans_start = jiffies; /* prevent tx timeout */ } @@ -3568,7 +3568,7 @@ ping_media(struct net_device *dev, int msec) lp->tmp = lp->tx_new; /* Remember the ring position */ load_packet(dev, lp->frame, TD_LS | TD_FS | sizeof(lp->frame), (struct sk_buff *)1); - lp->tx_new = (++lp->tx_new) % lp->txRingSize; + lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; outl(POLL_DEMAND, DE4X5_TPD); } @@ -5417,7 +5417,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) /* Set up the descriptor and give ownership to the card */ load_packet(dev, lp->setup_frame, TD_IC | PERFECT_F | TD_SET | SETUP_FRAME_LEN, (struct sk_buff *)1); - lp->tx_new = (++lp->tx_new) % lp->txRingSize; + lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; outl(POLL_DEMAND, DE4X5_TPD); /* Start the TX */ netif_wake_queue(dev); /* Unlock the TX ring */ break; -- 1.7.2.3 -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."