netdev - [PATCH 2/3] drivers/net: Compare pointer-typed values to NULL rather than 0.

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Date:   Tue, 25 Jul 2017 04:06:33 -0700
From:   Tonghao Zhang <xiangxia.m.yue@...il.com>
To:     netdev@...r.kernel.org
Cc:     Tonghao Zhang <xiangxia.m.yue@...il.com>
Subject: [PATCH 2/3] drivers/net: Compare pointer-typed values to NULL rather than 0.

This makes an effort to choose between !x and x == NULL.
1. drivers/net/ethernet/nxp/lpc_eth.c
2. drivers/net/ethernet/amd/declance.c

Generated by: scripts/coccinelle/null/badzero.cocci

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@...il.com>
---
 drivers/net/ethernet/amd/declance.c | 2 +-
 drivers/net/ethernet/nxp/lpc_eth.c  | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/amd/declance.c b/drivers/net/ethernet/amd/declance.c
index 82cc813..76e623b 100644
--- a/drivers/net/ethernet/amd/declance.c
+++ b/drivers/net/ethernet/amd/declance.c
@@ -606,7 +606,7 @@ static int lance_rx(struct net_device *dev)
 			len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4;
 			skb = netdev_alloc_skb(dev, len + 2);
 
-			if (skb == 0) {
+			if (!skb) {
 				dev->stats.rx_dropped++;
 				*rds_ptr(rd, mblength, lp->type) = 0;
 				*rds_ptr(rd, rmd1, lp->type) =
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index 08381ef..0d177d4 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1338,7 +1338,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
 	/* Get size of DMA buffers/descriptors region */
 	pldat->dma_buff_size = (ENET_TX_DESC + ENET_RX_DESC) * (ENET_MAXF_SIZE +
 		sizeof(struct txrx_desc_t) + sizeof(struct rx_status_t));
-	pldat->dma_buff_base_v = 0;
+	pldat->dma_buff_base_v = NULL;
 
 	if (use_iram_for_net(&pldat->pdev->dev)) {
 		dma_handle = LPC32XX_IRAM_BASE;
@@ -1350,7 +1350,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
 				"IRAM not big enough for net buffers, using SDRAM instead.\n");
 	}
 
-	if (pldat->dma_buff_base_v == 0) {
+	if (pldat->dma_buff_base_v == NULL) {
 		ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 		if (ret)
 			goto err_out_free_irq;
-- 
1.8.3.1