[PATCH] "3c59x collision statistics fix" fix
Andrew Morton [Fri, 31 Mar 2006 10:30:47 +0000 (02:30 -0800)]
The pre-2.6.16 patch "3c59x collision statistics fix" accidentally caused
vortex_error() to not run iowrite16(TxEnable, ioaddr + EL3_CMD) if we got a
maxCollisions interrupt but MAX_COLLISION_RESET is not set.

Thanks to Pete Clements <clem@clem.clem-digital.net> for reporting and testing.

Acked-by: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/net/3c59x.c

index 70f6389..5112907 100644 (file)
@@ -2083,16 +2083,14 @@ vortex_error(struct net_device *dev, int status)
                }
                if (tx_status & 0x14)  vp->stats.tx_fifo_errors++;
                if (tx_status & 0x38)  vp->stats.tx_aborted_errors++;
+               if (tx_status & 0x08)  vp->xstats.tx_max_collisions++;
                iowrite8(0, ioaddr + TxStatus);
                if (tx_status & 0x30) {                 /* txJabber or txUnderrun */
                        do_tx_reset = 1;
-               } else if (tx_status & 0x08) {  /* maxCollisions */
-                       vp->xstats.tx_max_collisions++;
-                       if (vp->drv_flags & MAX_COLLISION_RESET) {
-                               do_tx_reset = 1;
-                               reset_mask = 0x0108;            /* Reset interface logic, but not download logic */
-                       }
-               } else {                                                /* Merely re-enable the transmitter. */
+               } else if ((tx_status & 0x08) && (vp->drv_flags & MAX_COLLISION_RESET))  {      /* maxCollisions */
+                       do_tx_reset = 1;
+                       reset_mask = 0x0108;            /* Reset interface logic, but not download logic */
+               } else {                                /* Merely re-enable the transmitter. */
                        iowrite16(TxEnable, ioaddr + EL3_CMD);
                }
        }