ucc_geth: Fix interrupt coalescing size and alignment

The rx interrupt coalescing table alignment was "guessed" to be 4,
but should be 64. The size should be 8 * number of queues + 4.
Verified in the MPC8323E manual.

Signed-off-by: Michael Barkowski <Michael.Barkowski@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/ucc_geth.c

@@ -2958,8 +2958,8 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
 	/* Size varies with number of Rx queues */
 	ugeth->rx_irq_coalescing_tbl_offset =
 	    qe_muram_alloc(ug_info->numQueuesRx *
-			   sizeof(struct ucc_geth_rx_interrupt_coalescing_entry),
-			   UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT);
+			   sizeof(struct ucc_geth_rx_interrupt_coalescing_entry)
+			   + 4, UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT);
 	if (IS_MURAM_ERR(ugeth->rx_irq_coalescing_tbl_offset)) {
 		ugeth_err
 		    ("%s: Can not allocate DPRAM memory for"

drivers/net/ucc_geth.h

@@ -867,8 +867,7 @@ struct ucc_geth_hardware_statistics {
 #define UCC_GETH_SCHEDULER_ALIGNMENT		4	/* This is a guess */
 #define UCC_GETH_TX_STATISTICS_ALIGNMENT	4	/* This is a guess */
 #define UCC_GETH_RX_STATISTICS_ALIGNMENT	4	/* This is a guess */
-#define UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT	4	/* This is a
-								   guess */
+#define UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT	64
 #define UCC_GETH_RX_BD_QUEUES_ALIGNMENT		8	/* This is a guess */
 #define UCC_GETH_RX_PREFETCHED_BDS_ALIGNMENT	128	/* This is a guess */
 #define UCC_GETH_RX_EXTENDED_FILTERING_GLOBAL_PARAMETERS_ALIGNMENT 4	/* This