Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Couple conflicts resolved here:

1) In the MACB driver, a bug fix to properly initialize the
   RX tail pointer properly overlapped with some changes
   to support variable sized rings.

2) In XGBE we had a "CONFIG_PM" --> "CONFIG_PM_SLEEP" fix
   overlapping with a reorganization of the driver to support
   ACPI, OF, as well as PCI variants of the chip.

3) In 'net' we had several probe error path bug fixes to the
   stmmac driver, meanwhile a lot of this code was cleaned up
   and reorganized in 'net-next'.

4) The cls_flower classifier obtained a helper function in
   'net-next' called __fl_delete() and this overlapped with
   Daniel Borkamann's bug fix to use RCU for object destruction
   in 'net'.  It also overlapped with Jiri's change to guard
   the rhashtable_remove_fast() call with a check against
   tc_skip_sw().

5) In mlx4, a revert bug fix in 'net' overlapped with some
   unrelated changes in 'net-next'.

6) In geneve, a stale header pointer after pskb_expand_head()
   bug fix in 'net' overlapped with a large reorganization of
   the same code in 'net-next'.  Since the 'net-next' code no
   longer had the bug in question, there was nothing to do
   other than to simply take the 'net-next' hunks.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 0e489bb82456..538544a7c642 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -991,6 +991,7 @@ static inline void macb_init_rx_ring(struct macb *bp)
                 addr += bp->rx_buffer_size;
         }
         bp->rx_ring[bp->rx_ring_size - 1].addr |= MACB_BIT(RX_WRAP);
+        bp->rx_tail = 0;
 }
 
 static int macb_rx(struct macb *bp, int budget)
@@ -1172,6 +1173,7 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id)
                 if (status & MACB_BIT(RXUBR)) {
                         ctrl = macb_readl(bp, NCR);
                         macb_writel(bp, NCR, ctrl & ~MACB_BIT(RE));
+                        wmb();
                         macb_writel(bp, NCR, ctrl | MACB_BIT(RE));
 
                         if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE)
@@ -1736,8 +1738,6 @@ static void macb_init_rings(struct macb *bp)
         bp->queues[0].tx_head = 0;
         bp->queues[0].tx_tail = 0;
         bp->queues[0].tx_ring[bp->tx_ring_size - 1].ctrl |= MACB_BIT(TX_WRAP);
-
-        bp->rx_tail = 0;
 }
 
 static void macb_reset_hw(struct macb *bp)
@@ -2943,6 +2943,7 @@ static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
         if (intstatus & MACB_BIT(RXUBR)) {
                 ctl = macb_readl(lp, NCR);
                 macb_writel(lp, NCR, ctl & ~MACB_BIT(RE));
+                wmb();
                 macb_writel(lp, NCR, ctl | MACB_BIT(RE));
         }