net: netcp: Fixes hw statistics module base setting error

wingmankwok · davem330 · commit a94bcd09c554 · 2015-07-27T00:18:39.000-07:00
This patch fixes error in the setting of the hw statistics
module base for K2HK platform.  In K2HK although there are
4 hw statistics modules, but only 2 are visible at a time.
Thus when setting up the pointers to the base of the
corresponding hw statistics modules, modules 0 and 2 should
point to one base, while modules 1 and 3 should point to the
other.

Signed-off-by: WingMan Kwok &lt;w-kwok2@ti.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c
@@ -2675,10 +2675,14 @@ static int set_gbe_ethss14_priv(struct gbe_priv *gbe_dev,
 	gbe_dev->sgmii_port_regs = gbe_dev->ss_regs + GBE13_SGMII_MODULE_OFFSET;
 	gbe_dev->host_port_regs = gbe_dev->switch_regs + GBE13_HOST_PORT_OFFSET;
 
+	/* K2HK has only 2 hw stats modules visible at a time, so
+	 * module 0 & 2 points to one base and
+	 * module 1 & 3 points to the other base
+	 */
 	for (i = 0; i < gbe_dev->max_num_slaves; i++) {
 		gbe_dev->hw_stats_regs[i] =
 			gbe_dev->switch_regs + GBE13_HW_STATS_OFFSET +
-			(GBE_HW_STATS_REG_MAP_SZ * i);
+			(GBE_HW_STATS_REG_MAP_SZ * (i & 0x1));
 	}
 
 	gbe_dev->ale_reg = gbe_dev->switch_regs + GBE13_ALE_OFFSET;
