diff options
| author | Théo Lebrun <theo.lebrun@bootlin.com> | 2025-10-14 17:25:14 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-10-16 16:59:28 -0700 |
| commit | b5fe4f3e5912d79832bc37b207234aaf84c1b789 (patch) | |
| tree | f439d6bdd2cc934047bfec5743ae05d0ad4afda2 /drivers/net/ethernet/cadence/macb_main.c | |
| parent | 027202adf07952d9b4d7a3199fe1014a537e7a81 (diff) | |
net: macb: drop `count` local variable in macb_tx_map()
Local variable `count` is useless: it counts number of DMA descriptors
used and returns it. But the return value is only checked for error.
Drop counting the number of DMA descriptors and return a usual
negative-if-error integer.
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://patch.msgid.link/20251014-macb-cleanup-v1-13-31cd266e22cd@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/cadence/macb_main.c')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb_main.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 08e541d8f8e6..dd3b13fa3047 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -1992,7 +1992,7 @@ static unsigned int macb_tx_map(struct macb *bp, unsigned int len, i, tx_head = queue->tx_head; struct macb_tx_skb *tx_skb = NULL; struct macb_dma_desc *desc; - unsigned int offset, size, count = 0; + unsigned int offset, size; unsigned int f, nr_frags = skb_shinfo(skb)->nr_frags; unsigned int eof = 1, mss_mfs = 0; u32 ctrl, lso_ctrl = 0, seq_ctrl = 0; @@ -2031,7 +2031,6 @@ static unsigned int macb_tx_map(struct macb *bp, len -= size; offset += size; - count++; tx_head++; size = umin(len, bp->max_tx_length); @@ -2060,7 +2059,6 @@ static unsigned int macb_tx_map(struct macb *bp, len -= size; offset += size; - count++; tx_head++; } } @@ -2139,7 +2137,7 @@ static unsigned int macb_tx_map(struct macb *bp, queue->tx_head = tx_head; - return count; + return 0; dma_error: netdev_err(bp->dev, "TX DMA map failed\n"); @@ -2150,7 +2148,7 @@ dma_error: macb_tx_unmap(bp, tx_skb, 0); } - return 0; + return -ENOMEM; } static netdev_features_t macb_features_check(struct sk_buff *skb, @@ -2336,7 +2334,7 @@ static netdev_tx_t macb_start_xmit(struct sk_buff *skb, struct net_device *dev) } /* Map socket buffer for DMA transfer */ - if (!macb_tx_map(bp, queue, skb, hdrlen)) { + if (macb_tx_map(bp, queue, skb, hdrlen)) { dev_kfree_skb_any(skb); goto unlock; } |