[PATCH 0/2] net: bnx2: Fix checkpatch and clang warnings

[PATCH 0/2] net: bnx2: Fix checkpatch and clang warnings

[Varsha Rao]

This patchset fixes NULL comparison and extra parentheses, checkpatch
and clang warnings.

Varsha Rao (2):
  net: ethernet: bnx2: Remove extra parentheses
  net: ethernet: bnx2: Replace NULL comparison

 drivers/net/ethernet/broadcom/bnx2.c | 44 ++++++++++++++--------------
 1 file changed, 22 insertions(+), 22 deletions(-)

-- 
2.17.0

[PATCH 1/2] net: ethernet: bnx2: Remove extra parentheses

[Varsha Rao]

The following coccinelle script removes extra parentheses to fix the
clang warning of extraneous parentheses.

@disable paren@
identifier i;
expression e;
statement s;
@@
if (
-(i == e)
+i == e
 )
s

Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
---
 drivers/net/ethernet/broadcom/bnx2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index 9ffc4a8c5fc7..2306523778d4 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -3285,7 +3285,7 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
 		sw_cons = BNX2_NEXT_RX_BD(sw_cons);
 		sw_prod = BNX2_NEXT_RX_BD(sw_prod);
 
-		if ((rx_pkt == budget))
+		if (rx_pkt == budget)
 			break;
 
 		/* Refresh hw_cons to see if there is new work */
-- 
2.17.0

[PATCH 2/2] net: ethernet: bnx2: Replace NULL comparison

[Varsha Rao]

This patch fixes the checkpatch issue of NULL comparison. Replace x == NULL
with !x, by using the following coccinelle script:

@disable is_null@
expression e;
@@
-e==NULL
+!e

Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
---
 drivers/net/ethernet/broadcom/bnx2.c | 42 ++++++++++++++--------------
 1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index 2306523778d4..3853296d78c1 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -384,7 +384,7 @@ static int bnx2_register_cnic(struct net_device *dev, struct cnic_ops *ops,
 	struct bnx2 *bp = netdev_priv(dev);
 	struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
 
-	if (ops == NULL)
+	if (!ops)
 		return -EINVAL;
 
 	if (cp->drv_state & CNIC_DRV_STATE_REGD)
@@ -755,13 +755,13 @@ bnx2_alloc_tx_mem(struct bnx2 *bp)
 		struct bnx2_tx_ring_info *txr = &bnapi->tx_ring;
 
 		txr->tx_buf_ring = kzalloc(SW_TXBD_RING_SIZE, GFP_KERNEL);
-		if (txr->tx_buf_ring == NULL)
+		if (!txr->tx_buf_ring)
 			return -ENOMEM;
 
 		txr->tx_desc_ring =
 			dma_alloc_coherent(&bp->pdev->dev, TXBD_RING_SIZE,
 					   &txr->tx_desc_mapping, GFP_KERNEL);
-		if (txr->tx_desc_ring == NULL)
+		if (!txr->tx_desc_ring)
 			return -ENOMEM;
 	}
 	return 0;
@@ -779,7 +779,7 @@ bnx2_alloc_rx_mem(struct bnx2 *bp)
 
 		rxr->rx_buf_ring =
 			vzalloc(SW_RXBD_RING_SIZE * bp->rx_max_ring);
-		if (rxr->rx_buf_ring == NULL)
+		if (!rxr->rx_buf_ring)
 			return -ENOMEM;
 
 		for (j = 0; j < bp->rx_max_ring; j++) {
@@ -788,7 +788,7 @@ bnx2_alloc_rx_mem(struct bnx2 *bp)
 						   RXBD_RING_SIZE,
 						   &rxr->rx_desc_mapping[j],
 						   GFP_KERNEL);
-			if (rxr->rx_desc_ring[j] == NULL)
+			if (!rxr->rx_desc_ring[j])
 				return -ENOMEM;
 
 		}
@@ -796,7 +796,7 @@ bnx2_alloc_rx_mem(struct bnx2 *bp)
 		if (bp->rx_pg_ring_size) {
 			rxr->rx_pg_ring = vzalloc(SW_RXPG_RING_SIZE *
 						  bp->rx_max_pg_ring);
-			if (rxr->rx_pg_ring == NULL)
+			if (!rxr->rx_pg_ring)
 				return -ENOMEM;
 
 		}
@@ -807,7 +807,7 @@ bnx2_alloc_rx_mem(struct bnx2 *bp)
 						   RXBD_RING_SIZE,
 						   &rxr->rx_pg_desc_mapping[j],
 						   GFP_KERNEL);
-			if (rxr->rx_pg_desc_ring[j] == NULL)
+			if (!rxr->rx_pg_desc_ring[j])
 				return -ENOMEM;
 
 		}
@@ -845,7 +845,7 @@ bnx2_alloc_stats_blk(struct net_device *dev)
 				sizeof(struct statistics_block);
 	status_blk = dma_zalloc_coherent(&bp->pdev->dev, bp->status_stats_size,
 					 &bp->status_blk_mapping, GFP_KERNEL);
-	if (status_blk == NULL)
+	if (!status_blk)
 		return -ENOMEM;
 
 	bp->status_blk = status_blk;
@@ -914,7 +914,7 @@ bnx2_alloc_mem(struct bnx2 *bp)
 						BNX2_PAGE_SIZE,
 						&bp->ctx_blk_mapping[i],
 						GFP_KERNEL);
-			if (bp->ctx_blk[i] == NULL)
+			if (!bp->ctx_blk[i])
 				goto alloc_mem_err;
 		}
 	}
@@ -2667,7 +2667,7 @@ bnx2_alloc_bad_rbuf(struct bnx2 *bp)
 	u32 val;
 
 	good_mbuf = kmalloc(512 * sizeof(u16), GFP_KERNEL);
-	if (good_mbuf == NULL)
+	if (!good_mbuf)
 		return -ENOMEM;
 
 	BNX2_WR(bp, BNX2_MISC_ENABLE_SET_BITS,
@@ -3225,7 +3225,7 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
 
 		if (len <= bp->rx_copy_thresh) {
 			skb = netdev_alloc_skb(bp->dev, len + 6);
-			if (skb == NULL) {
+			if (!skb) {
 				bnx2_reuse_rx_data(bp, rxr, data, sw_ring_cons,
 						  sw_ring_prod);
 				goto next_rx;
@@ -4561,7 +4561,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf,
 
 	if (align_start || align_end) {
 		align_buf = kmalloc(len32, GFP_KERNEL);
-		if (align_buf == NULL)
+		if (!align_buf)
 			return -ENOMEM;
 		if (align_start) {
 			memcpy(align_buf, start, 4);
@@ -4575,7 +4575,7 @@ bnx2_nvram_write(struct bnx2 *bp, u32 offset, u8 *data_buf,
 
 	if (!(bp->flash_info->flags & BNX2_NV_BUFFERED)) {
 		flash_buffer = kmalloc(264, GFP_KERNEL);
-		if (flash_buffer == NULL) {
+		if (!flash_buffer) {
 			rc = -ENOMEM;
 			goto nvram_write_end;
 		}
@@ -5440,7 +5440,7 @@ bnx2_free_tx_skbs(struct bnx2 *bp)
 		struct bnx2_tx_ring_info *txr = &bnapi->tx_ring;
 		int j;
 
-		if (txr->tx_buf_ring == NULL)
+		if (!txr->tx_buf_ring)
 			continue;
 
 		for (j = 0; j < BNX2_TX_DESC_CNT; ) {
@@ -5448,7 +5448,7 @@ bnx2_free_tx_skbs(struct bnx2 *bp)
 			struct sk_buff *skb = tx_buf->skb;
 			int k, last;
 
-			if (skb == NULL) {
+			if (!skb) {
 				j = BNX2_NEXT_TX_BD(j);
 				continue;
 			}
@@ -5485,14 +5485,14 @@ bnx2_free_rx_skbs(struct bnx2 *bp)
 		struct bnx2_rx_ring_info *rxr = &bnapi->rx_ring;
 		int j;
 
-		if (rxr->rx_buf_ring == NULL)
+		if (!rxr->rx_buf_ring)
 			return;
 
 		for (j = 0; j < bp->rx_max_ring_idx; j++) {
 			struct bnx2_sw_bd *rx_buf = &rxr->rx_buf_ring[j];
 			u8 *data = rx_buf->data;
 
-			if (data == NULL)
+			if (!data)
 				continue;
 
 			dma_unmap_single(&bp->pdev->dev,
@@ -6826,7 +6826,7 @@ bnx2_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
 {
 	struct bnx2 *bp = netdev_priv(dev);
 
-	if (bp->stats_blk == NULL)
+	if (!bp->stats_blk)
 		return;
 
 	net_stats->rx_packets =
@@ -7217,7 +7217,7 @@ bnx2_get_eeprom_len(struct net_device *dev)
 {
 	struct bnx2 *bp = netdev_priv(dev);
 
-	if (bp->flash_info == NULL)
+	if (!bp->flash_info)
 		return 0;
 
 	return (int) bp->flash_size;
@@ -7678,7 +7678,7 @@ bnx2_get_ethtool_stats(struct net_device *dev,
 	u32 *temp_stats = (u32 *) bp->temp_stats_blk;
 	u8 *stats_len_arr = NULL;
 
-	if (hw_stats == NULL) {
+	if (!hw_stats) {
 		memset(buf, 0, sizeof(u64) * BNX2_NUM_STATS);
 		return;
 	}
@@ -8121,7 +8121,7 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 	bp->temp_stats_blk =
 		kzalloc(sizeof(struct statistics_block), GFP_KERNEL);
 
-	if (bp->temp_stats_blk == NULL) {
+	if (!bp->temp_stats_blk) {
 		rc = -ENOMEM;
 		goto err_out;
 	}
-- 
2.17.0

Re: [PATCH 0/2] net: bnx2: Fix checkpatch and clang warnings

[David Miller]

From: Varsha Rao <rvarsha016@gmail.com>
Date: Sun,  3 Jun 2018 17:18:04 +0530

> This patchset fixes NULL comparison and extra parentheses, checkpatch
> and clang warnings.

Series applied, thanks.