From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: Sat, 4 Apr 2015 19:51:19 +0000 (+0300)
Subject: staging: octeon-ethernet: eliminate DONT_WRITEBACK
X-Git-Tag: v4.2-rc1~88^2~969
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c93b0e75a819e648e7c16a5ebd503a2a36f7c1ac;p=platform%2Fkernel%2Flinux-exynos.git

staging: octeon-ethernet: eliminate DONT_WRITEBACK

This feature is not used so eliminate it.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/octeon/ethernet-defines.h b/drivers/staging/octeon/ethernet-defines.h
index 58ff9ba..8a6f82f 100644
--- a/drivers/staging/octeon/ethernet-defines.h
+++ b/drivers/staging/octeon/ethernet-defines.h
@@ -54,14 +54,6 @@
 
 #define USE_ASYNC_IOBDMA            (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0)
 
-/*
- * Use this to have all FPA frees also tell the L2 not to write data
- * to memory.
- */
-#define DONT_WRITEBACK(x)           (x)
-/* Use this to not have FPA frees control L2 */
-/*#define DONT_WRITEBACK(x)         0   */
-
 /* Maximum number of SKBs to try to free per xmit packet. */
 #define MAX_OUT_QUEUE_DEPTH 1000
 
diff --git a/drivers/staging/octeon/ethernet-mem.c b/drivers/staging/octeon/ethernet-mem.c
index ea1232c..55d9219 100644
--- a/drivers/staging/octeon/ethernet-mem.c
+++ b/drivers/staging/octeon/ethernet-mem.c
@@ -54,7 +54,7 @@ static int cvm_oct_fill_hw_skbuff(int pool, int size, int elements)
 			break;
 		skb_reserve(skb, 256 - (((unsigned long)skb->data) & 0x7f));
 		*(struct sk_buff **)(skb->data - sizeof(void *)) = skb;
-		cvmx_fpa_free(skb->data, pool, DONT_WRITEBACK(size / 128));
+		cvmx_fpa_free(skb->data, pool, size / 128);
 		freed--;
 	}
 	return elements - freed;
diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
index 91043cc..fbf5f94 100644
--- a/drivers/staging/octeon/ethernet-rx.c
+++ b/drivers/staging/octeon/ethernet-rx.c
@@ -400,8 +400,7 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
 			cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE,
 					      1);
 
-			cvmx_fpa_free(work, CVMX_FPA_WQE_POOL,
-				      DONT_WRITEBACK(1));
+			cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
 		} else {
 			cvm_oct_free_work(work);
 		}
diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c
index 94ba85a..25f89b6 100644
--- a/drivers/staging/octeon/ethernet-tx.c
+++ b/drivers/staging/octeon/ethernet-tx.c
@@ -576,7 +576,7 @@ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev)
 	if (unlikely(packet_buffer == NULL)) {
 		printk_ratelimited("%s: Failed to allocate a packet buffer\n",
 				   dev->name);
-		cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1));
+		cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
 		priv->stats.tx_dropped++;
 		dev_kfree_skb_any(skb);
 		return 0;
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
index afcdce4..d05bdca 100644
--- a/drivers/staging/octeon/ethernet.c
+++ b/drivers/staging/octeon/ethernet.c
@@ -203,11 +203,10 @@ int cvm_oct_free_work(void *work_queue_entry)
 		if (unlikely(!segment_ptr.s.i))
 			cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
 				      segment_ptr.s.pool,
-				      DONT_WRITEBACK(CVMX_FPA_PACKET_POOL_SIZE /
-						     128));
+				      CVMX_FPA_PACKET_POOL_SIZE / 128);
 		segment_ptr = next_ptr;
 	}
-	cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1));
+	cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
 
 	return 0;
 }