[PATCH 11/20] dpaa_eth: simplify variables used in dpaa_cleanup_tx_fd()

From: Madalin Bucur
Date: Tue Oct 08 2019 - 08:11:26 EST


Avoid casts and repeated conversions.

Signed-off-by: Madalin Bucur <madalin.bucur@xxxxxxx>
---
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 14ebdb10fcd4..d4601e31261e 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -1585,13 +1585,13 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,
struct device *dev = priv->net_dev->dev.parent;
struct skb_shared_hwtstamps shhwtstamps;
dma_addr_t addr = qm_fd_addr(fd);
+ void *vaddr = phys_to_virt(addr);
const struct qm_sg_entry *sgt;
- struct sk_buff **skbh, *skb;
+ struct sk_buff *skb;
int nr_frags, i;
u64 ns;

- skbh = (struct sk_buff **)phys_to_virt(addr);
- skb = *skbh;
+ skb = *(struct sk_buff **)vaddr;

if (unlikely(qm_fd_get_format(fd) == qm_fd_sg)) {
nr_frags = skb_shinfo(skb)->nr_frags;
@@ -1602,7 +1602,7 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,
/* The sgt buffer has been allocated with netdev_alloc_frag(),
* it's from lowmem.
*/
- sgt = phys_to_virt(addr + qm_fd_get_offset(fd));
+ sgt = vaddr + qm_fd_get_offset(fd);

/* sgt[0] is from lowmem, was dma_map_single()-ed */
dma_unmap_single(priv->tx_dma_dev, qm_sg_addr(&sgt[0]),
@@ -1617,7 +1617,7 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,
}
} else {
dma_unmap_single(priv->tx_dma_dev, addr,
- skb_tail_pointer(skb) - (u8 *)skbh, dma_dir);
+ skb_tail_pointer(skb) - (u8 *)vaddr, dma_dir);
}

/* DMA unmapping is required before accessing the HW provided info */
@@ -1625,7 +1625,7 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,
skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
memset(&shhwtstamps, 0, sizeof(shhwtstamps));

- if (!fman_port_get_tstamp(priv->mac_dev->port[TX], (void *)skbh,
+ if (!fman_port_get_tstamp(priv->mac_dev->port[TX], vaddr,
&ns)) {
shhwtstamps.hwtstamp = ns_to_ktime(ns);
skb_tstamp_tx(skb, &shhwtstamps);
@@ -1636,7 +1636,7 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,

if (qm_fd_get_format(fd) == qm_fd_sg)
/* Free the page frag that we allocated on Tx */
- skb_free_frag(phys_to_virt(addr));
+ skb_free_frag(vaddr);

return skb;
}
--
2.1.0